Flow control device to be fitted in well (versions) and method to this end

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to control over flow resistance in the well. Proposed device has the surface making the chamber and including lateral and opposite end surfaces. Note here that maximum distance between opposite end surfaces is smaller than maximum length of opposite end surfaces. It has first opening in one of end surfaces and second opening in said surface, isolated from first opening. Note here that lateral surface serves to swirl the flow from second opening to circulate around first opening.

EFFECT: higher efficiency of in-well fluid resistance adjustment.

27 cl, 11 dwg

 

This application is a partial continuation of the earlier application U.S. 12/792146, filed June 2, 2010. This application is also related to the earlier application U.S. 12/700685, filed February 4, 2010, which is a partial continuation of the earlier application U.S. 12/542695, filed August 18, 2009. Full descriptions of these prior applications are herein replaced by this reference.

The technical field to which the invention relates.

The present invention generally relates to methods and equipment used in the technological processes associated with the underground well, and as described below option, in particular to the regulation of the flow resistance in the underground well.

The level of technology

The most important task in the extraction of hydrocarbons downhole method is to effectively regulate the flow of fluids coming from the geological formation into the wellbore. Effective regulation can be solved a number of problems, including preventing the formation of water and gas cones, minimization of sand, minimizing the removal of water and/or gas, the marginal efficiency of oil and/or gas, the efficient allocation of productive zones, etc.

The main objective usually is to ensure a steady supply of water, steam, gas, etc. through nagnetic who function well in many areas for uniform distribution of hydrocarbons in geological strata in order to avoid premature breakthrough of injected fluid to the trunk productive wells. Thus, optimal regulation of the fluid flow flowing from the wellbore in a geological formation, it also features a helpful effect in relation to the operation of injection wells.

Thus, it is clear that given above for solving the problem of effective regulation of the flow resistance of the fluid in the borehole, it is desirable to offer a solution, characterized by advanced technology, which can also be useful in other circumstances.

Disclosure of inventions

Below is a description of the proposed system of regulation of the flow resistance, which is characterized by advanced technology in the regulation of fluid flow in the well. The following describes one variant, in which the resistance to the flow of multicomponent fluid increases, if the undesirable characteristics of multicomponent fluid reaches a certain threshold level. The following describes another variant, in which the resistance of the stream flowing through the system increases with the decrease of the ratio of the share of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid.

One aspect of the present invention provides improvements to the existing prior art, is to create a regulatory system resistance is the Otok for use in subterranean wells. This system can include a flow chamber through which flows a multicomponent fluid. The chamber contains one or more inputs, an output and one or more devices that prevent redirection of the flow of multicomponent fluid circular path passing around the specified output, the radial passing to the output.

Another aspect of the present invention is that the system of regulation of the flow resistance for use in a subterranean well can include a flow chamber through which flows a multicomponent fluid. The chamber contains one or more inputs, an output and one or more devices that prevent the circulation flow of multicomponent fluid around the specified output.

Another aspect of the present invention is that the system of regulation of the flow resistance for use in a subterranean well can include a flow chamber through which the borehole enters a multicomponent fluid, and the chamber contains one or more inputs, an output and one or more devices that prevent redirection of the flow of multicomponent fluid circular path passing around the specified output, the radial passing to the output.

Another aspect of the present invention is the fact that that the following system of regulation of the flow resistance can include a flow chamber containing the output and one or more devices that prevent redirection of the flow of the multicomponent fluid to the exit. The direction coming into the camera stream of the multicomponent fluid is changed depending on the relationship of the proportion of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid.

Another aspect of the present invention is that the proposed system of regulation of the flow resistance can contain device redirection of flow, which, depending on the relationship of the proportion of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid pushes out the main volume of the fluid in one of the many trajectories. The system also includes a flow chamber having an outlet, a first inlet through which the first flow trajectories, the second entrance, which passes through the second flow trajectories, and one or more devices that prevent radial flow of multicomponent fluid flowing from the second input to the specified output to a greater extent than the radial flow of multicomponent fluid flowing from the first input to the specified output.

In one embodiment, the device flow control to set the key in an underground wellbore may have an internal surface, forming the internal chamber, with the inner surface may include a side surface and opposite end surfaces, with the greatest distance between opposite end surfaces is less than the greatest length of the opposite end surfaces; a first opening in one end surface and the second hole in the inner surface, spaced from the first hole, and the side surface is designed to convert the flow from the second hole in the circular flow circulating around the first hole; and may further be fitted with a device to change the trajectory of the stream flowing through the internal chamber.

In another embodiment, the device flow control for installation in an underground wellbore may include cylindrical chamber for admitting students through the chamber inlet flow and direction to the outlet chamber, with the greatest axial length cylindrically camera is less than the largest diametrical extent cylindrically camera, and cylindrically Luggage circulating flow around the output of the camera, and the angle of rotation depends on the characteristics of the incoming stream flowing through the chamber inlet, and may further be fitted with a device to change the trajectory of the stream flowing through isintroducing the camera.

The method of flow control in an underground wellbore may include receiving stream cylindrically camera devices regulate the flow in the wellbore, and cylindrically chamber contains one or more inputs and greatest axial length cylindrically camera is less than the largest diametrical extent cylindrically camera; the direction of flow through the device to change the trajectory of the stream in cylindrically chamber; providing a circulation stream flowing through cylindrically the camera around the output of the camera, and the angle of rotation depends on the characteristics of the incoming stream flowing through the chamber inlet.

These and other features, advantages and effects as understood by the specialist, follow from the detailed description below of embodiments of the invention and the related drawings, in which similar elements in different drawings have the same reference designators.

Brief description of drawings

Figure 1 shows a schematic partial cross-sectional view of the downhole system that can be built on the basis of the principles of the present invention.

Figure 2 shows an enlarged schematic cross-sectional view of the downhole filter and regulatory resistance flux is, which can be used in the borehole system is shown in figure 1.

Figure 3 shows a schematic of the "expanded" top view of one configuration of the system of regulation of the flow resistance in the section along the line 3-3 shown in figure 2.

Figa and 4B show schematic views from above of another configuration of the flow-through chamber system of regulation of the flow resistance.

Figure 5 shows a schematic top view of another configuration of the flow cells.

Figa and 6B show schematic views from above of another configuration of the control system for the flow resistance.

Figa-7H show schematic cross sections of various configurations, flow cells, and the cuts figa-7G taken along the line 7-7 shown on figv and incision on fign made on line 7H-7H depicted on fig.7G.

Fig and 7J show schematic perspective views of configurations of devices that can be used in a flow chamber system of regulation of the flow resistance.

Figa-11 show schematic views from above of additional configurations of the flow cells.

The implementation of the invention

Figure 1 shows an example of a well system 10, constructed on the basis of the principles of the present invention. As shown in figure 1, the barrel 12 bore has a generally vertical open hole cha is th 14, passing down from the casing 16, and mostly horizontal uncased portion 18 passing through the geological formation 20.

In the barrel 12 bore is mounted a tubular column 22 (type tubing columns). In the tubular column 22 in the mutual connection is multiple filters 24, systems 25 regulation of the flow resistance and packers 26.

Packers 26 seal the annular space 28 formed radially between the tubular column 22 and section 18 of the wellbore. When the fluid 30 can come from a variety of intervals or zones of the reservoir 20 through isolated between adjacent packers 26 part of the annular space 28.

Located between every two adjacent packers 26 downhole filter 24 and the system 25 of the regulation of the flow resistance are in mutual connection with the tubular column 22. In the wells of the filter 24 is filtered fluid 30 flowing in the tubular column 22 from the annular space 28. System 25 regulation of the flow resistance has a restrictive regulatory impact on the flow of the fluid 30 flowing in the tubular column 22, depending on the specific characteristics of fluids.

It should be noted that shown in the drawings and described in this document wellbore system 10 is l is nil private example of multiple borehole systems, which can be applied the principles of the present invention. It should be clearly understood that the principles of the present invention is in no way limited to any features of the well system 10 or its elements shown in the drawings or described in this document.

For example, in the framework of the principles of this invention, the barrel 12 wells may not be mainly vertical part 14 or substantially horizontal portion 18, and the fluid 30 can not only be removed from the reservoir 20, but in other embodiments may be introduced into the reservoir, and can be introduced into the reservoir and be removed from the reservoir, etc.

Any downhole filter 24 and any system 25 regulation of the flow resistance can not be located between every two adjacent packers 26. Each individual system 25 regulation of the flow resistance may not be connected to a separate downhole filter 24. Can be used any number, any configuration and/or any combination of these elements.

Any system 25 regulation of the flow resistance can not be used with downhole filter 24. For example, during injection of fluid it can flow through the system 25 of the regulation of the flow resistance, but may not flow through the downhole filter 24.

Uncased portion 14, 18 of the barrel 12 squag the us may not contain the well screens 24, system 25 regulation of the flow resistance, the packers 26 and any other elements of the tubular column 22. According to the principles of the present invention, any portion of the barrel 12 bore may be casing or uncased, and any part of the tubular column 22 can be placed in the casing or uncased portion of the wellbore.

Thus, it should be clearly understood that this invention describes the creation and application of specific embodiments of the invention, but the principles of the present invention is not limited to any features of the options. On the contrary, the principles of the present invention may be embodied in many other ways, based on information contained in the present invention.

Professionals it is clear that the net effect is that you can regulate the flow of fluid 30 flowing in the tubular column 22 of each zone of the reservoir 20, for example, to prevent the formation of a water cone 32 or gas cone 34. This method of flow control in the borehole can be used for the following purposes (but is not limited to these purposes): efficient allocation of zones to extract (or discharge) of fluids, minimizing the removal or discharge of undesirable fluids, the marginal efficiency of extraction or injection desirable f is widow etc.

System options 25 regulation of the flow resistance, described in detail below, can provide these beneficial effects by increasing the flow resistance when exceeding a certain speed level of fluids (for example, to distribute the flow between zones, to prevent water or gas cones, etc. by increasing the flow resistance in the fall of viscosity or density of the fluid below a certain level (for example, restrictions in the oil well flow of undesirable fluid, such as water or gas) and/or by increasing the flow resistance exceeding a certain level of viscosity or density of the fluid (for example, to minimize the discharge of water in steam well).

The desirability or undesirability of fluid is determined by the purpose of the operations performed by extraction or injection of fluid. For example, if the well is expected to extract the oil, but not water or gas, therefore, the oil is a desirable fluid, and water and gas - unwanted fluids. If wells are expected to be recovered gas and not water or oil, and therefore gas is a desirable fluid, and oil and water - unwanted fluids. If the reservoir is assumed to escalate steam, not water, hence, the steam is desirable fluid and the water - undesired hair the second fluid.

It should be noted that when the levels of temperature and pressure in the borehole gaseous hydrocarbons may actually be in a fully or partially liquid phase. Thus, it should be understood that the use herein of the words "gas" and "gas" (with regard to their paradigms) in these concepts are supercritical, liquid and/or gaseous phase of a substance.

In the embodiment of the invention with reference to figure 2, which shows an example of an enlarged image of the cross-section of one of the systems 25 regulation of the flow resistance and part of one of the downhole filter 24, a multicomponent fluid 36 (which may include one or more fluids, such as oil and water, liquid water and water vapor, oil and gas, gas and water, oil, water and gas and the like) enters the downhole filter 24, where it is filtered and then fed to the input 38 of the system 25 of the regulation of the flow resistance.

Multicomponent fluid may contain one or more desirable or undesirable fluids. Multicomponent fluid may contain water and water vapor. In another embodiment, the multicomponent fluid may contain oil, water and/or gas.

The flow of multicomponent fluid 36 through the system 25 of the regulation of the resistance to flow is limited in dependence on one or some of the characteristics (such as density, viscosity, speed and others) multicomponent fluid. Then multicomponent fluid 36 is output from the system 25 of the regulation of the flow resistance inside the tubular column 22 through the outlet 40.

In other embodiments, in conjunction with system 25 control the flow resistance of the downhole filter 24 may not be used (for example, when the injection operations); multicomponent fluid 36 can flow through the various elements of the well system 10 in the opposite direction (for example, when the injection operations); together with many downhole filters can be used only regulation of the flow resistance; together with one or more downhole filters can be used several systems of regulation of the flow resistance; multi-component fluid can not be extracted from the annular space or tubular columns, and from other areas well and can do in the annular space or tubular column and in other areas of the well; multicomponent fluid can flow through the regulatory system flow resistance before getting into the downhole filter; downhole filter and/or control system in the flow resistance on the input side or the output can be in the mutual connection of other components, etc. Thus, in the pleasant, the principles of the present invention in any way not limited to the features of the variant shown in figure 2 and described in this document.

Although the downhole filter 24 shown in figure 2, known in the art and is a filter with a wire winding, in other embodiments, filters can be applied to other types and their combinations (for example, sintered metal filter, expandable filter, air filter gasket, wire mesh and other). In addition, if necessary, can be used for additional components (housings, tubular bridges, cables, measuring tools, gauges, regulators, flow and so on).

Figure 2 shows a simplified depiction of the system 25 of the regulation of the flow resistance, in this case, as described in detail below, in a preferred embodiment of the invention, the system can contain multiple channels and devices to perform different functions. In addition, the system 25 preferably takes place in the circumferential direction around the tubular column 22 or the system may be built into the wall of the tubular design, which is part of the tubular columns and are with her in the mutual connection.

In other embodiments, the system 25 may not take place in the circumferential direction around the tubular column or may not be embedded in the wall of trubka the second design. For example, the system 25 may be formed in a flat design, etc. System 25 may be located in a separate envelope attached to the tubular column 22, or to have such an orientation in which the axis of the outlet 40 parallel to the axis of the tubular column. System 25 may be wireline or attached to the device with nitroboot form. The principles of the present invention can be embodied in any possible orientation or configuration of the system 25.

Figure 3 shows a detailed section of a variant of system 25. System 25 is depicted as "deployed" on the plane in the circumferential direction.

As stated above, the multicomponent fluid 36 flows into the system 25 through the inlet 38 and flows out through the outlet 40. Resistance to the flow of multicomponent fluid flowing through the system 25, is adjusted depending on one or more characteristics of a multicomponent fluid. System 25 shown in figure 3, in General terms similar to the system shown in Fig earlier application 12/700685 referred to above in this document.

In a variant, shown in figure 3, multicomponent fluid 36 is initially flows through multiple channels 42, 44, 46, 48, which direct the multicomponent fluid 36 to two devices 50, 52 redirection of flow. The device 50 takes the main the flow of fluid from the channels 44, 46, 48 along one of two paths 54, 56 of the flow stream and the second device 52 starts up the main flow of fluid from the channels 42, 46, 48 along one of two paths 58, 60.

The channel 44 by design has a greater resistance to the flow of fluids with high viscosity. The higher the viscosity of the fluid flowing through the channel 44, the greater the resistance is leakage.

Used in this document the word "viscosity" (given its paradigm) characterize the rheological properties of the substance, including its kinematic viscosity, yield stress, viscoplasticity, surface tension, wetting ability and so on.

For example, the channel 44 may have a relatively small cross-sectional area of flow, the channel may contribute to the flow of fluid through the winding path, to increase the flow resistance of the fluid with high viscosity can be used rough surfaces or fixtures, impeding the flow, etc. When this fluid with a relatively low viscosity can flow through the channel 44 with a relatively small resistance to its flow.

The fluid flowing through the channel 44, is fed to the control channel 64 of the device 50 redirection of flow. At the end of the control channel 64 includes a control orifice 66 with a reduced cross-sectional area for which velichenie speed of the fluid, resulting from the control channel.

The channel 48 has a resistance to flow, which is practically independent of viscosity flowing through him fluids, but has an increasing resistance to the flow of fluids having high speed and/or high density. The flow of fluids flowing at high speed through the channel 48 may be increasing the resistance, the value of which, however, is less than the resistance offered to the flow of these fluids flowing through the channel 44.

In the variant shown in figure 3, the fluid flowing through the channel 48, before getting into a control channel 68 device 50 redirect the flow falls into the "cyclone" chamber 62. The camera 62 is called "cyclone", because in this case she has a cylindrical shape with an outlet located at its center, a multi-component fluid 36 under the action of the pressure difference between the exit and entrance moves the camera in a spiral with increasing velocity as it approaches this output. In other embodiments can use one or more components such as nozzles, Venturi tubes, cones, etc.

At the end of the control channel 68 has a control hole 70 with a reduced cross-sectional area of flow to increase the velocity of fluid flowing from the control channel 68.

It is clear that the higher wascott the multicomponent stream 36, the greater the share of the multicomponent fluid flowing through the channel 48, the control channel 68 and the control hole 70 (due to the higher resistance to flow of fluid with high viscosity, flowing through the channel 44, in comparison with the flow resistance is flowing through the channel 48 and the cyclone chamber 62), and the lower the viscosity of multi-component flow, the greater the share of multicomponent fluid flowing through the channel 44, the control channel 64 and the control hole 66.

The fluid flowing through the channel 46 also flows through the cyclone chamber 72, which may be similar to the cyclone chamber 62 (however, in the preferred embodiment, the cyclone chamber 72 has a lower resistance flowing through her stream than cyclone chamber 62), and then enters the Central channel 74. Cyclone chamber 72 is used for "approval of the total resistance with the aim of balancing flows flowing through the channels 44, 46, 48.

It should be noted that to achieve the desired effects of the geometrical dimensions and other characteristics of various system components 25 should be selected accordingly. In the variant shown in figure 3, the desired effect device 50 redirection of flow is that the flow of the main volume of the multicomponent fluid 36 flowing through Cana is s 44, 46, 48, sent via path 54, if the multicomponent fluid is characterized by a significantly high value of the ratio of the share of the desired fluid to the proportion of unwanted fluid.

In this case, the desired fluid is oil, its viscosity higher than the viscosity of water or gas, so when a substantially large share of oil in a multicomponent fluid 36 main volume of the multicomponent fluid 36 flowing into the device 50 redirection of flow, embarks on a trajectory 54, not by path 56. This result is achieved due to the leakage of fluid from the control orifice 70 with greater intensity or greater speed than that of the fluid flowing from another management holes 66, which helps to start the larger part of the fluid flowing out of the channels 64, 68, 74, sweep, 54.

If the viscosity of multicomponent fluid 36 is not sufficiently high (the ratio of desired fluid to the proportion of unwanted fluid below a certain level), the bulk of multicomponent fluid 36 flowing into the device 50 redirection of flow, embarks on a trajectory 56, not on path 54. This result is achieved due to the leakage of fluid from the control orifice 66 with greater intensity or greater speed than that of the fluid flowing from another Manager open the I 70, that helps to start the larger part of the fluid flowing out of the channels 64, 68, 74, sweep, 56.

It is clear that, with appropriate configuration of the channels 44, 46, 48, control channels 64, 68, control holes 66, 70, cyclone chambers 62, 72, etc. specified ratio of desired fluid to the proportion of unwanted fluid in a multicomponent fluid 36 at which the device 50 starts up the main volume of fluid according to one of the trajectories 54 or 56 can be any.

The paths 54, 56, the fluid is routed to the appropriate management channels 76, 78 of the second device 52 redirection of flow. At the ends of the control channels 76, 78 are escape holes 80, 82. From the channel 42, the fluid enters the Central channel 75.

The device 52 redirect the flow is similar to device 50 redirection of the stream, and the fluid entering the device 52 through the channels 75, 76, 78, are sent via one of the paths 58, 60, and the choice of the trajectory is determined fraction of fluid flowing from the control holes 80, 82. During the flow of fluid through the control hole 80 with greater intensity or greater speed than that of the fluid flowing through the control orifice 82, the bulk of multicomponent fluid 36 embarks on a trajectory 60. During the flow of fluid through the control orifice 82 more intensively the TEW or with greater speed, than that of the fluid flowing through the control orifice 80, the bulk of multicomponent fluid 36 embarks on path 58.

Although in the embodiment, the system 25 figure 3 shows two devices 50, 52 redirection of flow, it is clear that for the embodiment of the principles of the invention may use any number of devices redirection of the stream (including one). Devices 50, 52 shown in figure 3, known in the art and are jet flow amplifiers, however, according to the principles of the present invention can be used device redirection of the flow of other types (for example, amplifiers flow pressure type flow switch with two States, the proportional amplifiers thread and others).

The fluid flowing through the path 58, enters the flow chamber 84 via the inlet 86 that directs fluid into the chamber in a generally tangential (for example, the camera 84 is shaped like a cylinder, and the inlet 86 is oriented tangentially to the lateral surface of the cylinder). As a result, as shown schematically by the arrow 90 in Fig 3, the fluid in the chamber 84 moves in a spiral and, ultimately, flows out through the outlet 40.

Fluid flowing along path 60, enters the flow chamber 84 through the inlet 88 to guide the fluid to a greater extent directly to the exit 40 (for example, as schematically shown by the arrow 92 in Phi is .3, in the radial direction). It is clear that when the flow of fluid directed into more directly to the outlet 40, as compared with the fluid flow directed to a lesser extent, directly to the output, at the same speed of these flows consumes less energy.

Thus, the flow of multicomponent fluid 36 to a greater extent directly to the outlet 40 has a smaller resistance, and Vice versa, the flow of multicomponent fluid 36 to a lesser extent, directly to the output 40 is characterized by a large resistance. Accordingly, when considering processes to exit 40, entering the main volume of the multicomponent fluid 36 into the chamber 84 by path 60 through the inlet 88 has a smaller resistance.

If fluid comes out of the control openings 80 with greater intensity or greater speed than the fluid coming out of the control orifice 82, the bulk of the fluid 36 flows along path 60. If the principal amount of fluid coming out of the channels 64, 68, 74, flows through the path 54, a large part of the fluid flows from the control orifice 80.

If fluid comes out of the control openings 70 with greater intensity or greater speed than the fluid coming out of the control orifice 66, the bulk of the fluid 36, leaving the channels 64, 68, 74, protece the sweep 54. If the viscosity of multicomponent fluid 36 exceeds a certain level, most of the fluid out of the control orifice 70.

Thus, when the high viscosity of multicomponent fluid 36 (and the greater the ratio of desired fluid to the proportion of unwanted fluid) flow, flowing through the system 25, is less resistance. When the reduced viscosity of multicomponent fluid 36 to flow flowing through the system 25, is more resistance.

The flow of multicomponent fluid 36, to a lesser extent directed straight to the exit 40 (see direction of arrow 90 figure 3), is more resistance. Thus, the flow is more resistance if the main volume of the multicomponent fluid 36 into the chamber 84 through the path 58 through the inlet 86.

If fluid comes out of the control openings 82 with greater intensity or greater speed than the fluid coming out of the control orifice 80, the bulk of the fluid 36 flows through the path 58. If the principal amount of fluid coming out of the channels 64, 68, 74, flows through the path 56, not on path 54, most of the fluid out of the control orifice 82.

If fluid comes out of the control orifice 66 with greater intensity or greater speed than the fluid coming out opravlyaushi what about the holes 70, the main volume of fluid coming out of the channels 64, 68, 74, flows through the path 56. If the viscosity of multicomponent fluid 36 below a certain level, most of the fluid out of the control orifice 66.

As described above, by virtue of the design system 25 has less resistance to the flow of multicomponent fluid 36 with high viscosity and has a greater resistance to the flow of multicomponent fluid with lower viscosity. It is characterized by a useful effect in the regulation of flow by passing a stream of fluid with high viscosity and limit the flow of fluid with a low viscosity (for example, to extract more oil and less water and gas).

If you want to skip the stream of fluid with low viscosity and restrict the flow of fluid with a high viscosity (for example, to extract more natural gas and less water or to discharge to a greater extent pair and to a lesser extent water), the system 25 can be simply reconfigured. For example, the inputs 86, 88 should be reversed, with the fluid flowing through the path 58, should be directed to the input 88 and a fluid flowing along path 60, should be directed to the input 86.

On figa and 4B shows an example of another configuration of the flow chamber 84, shown separately from the rest of the system is 25 regulation of the flow resistance. Flow chamber 84, depicted in figa and 4B, in General, similar to the flow chamber, shown in figure 3, and its difference is that in this case, the camera contains one or more devices 94. As shown in figa and 4B, the device 94 may be considered as a single unit having one or more holes or one or more gaps 96, as well as how many devices separated by gaps or holes.

Fixture 94 promotes circulation in the chamber 84 any part of the multicomponent fluid 36 flowing inside the chamber 84 in a circular motion and with a relatively high speed, high density or low viscosity, one or more gaps 96 contribute to flow in a more direct flow of multicomponent fluid from the inlet 88 to the outlet 40. Thus, if the multi-component fluid 36 into the chamber 84 through another entrance 86, he initially circulates it around the outlet 40, and the device 94 by increasing the speed and/or density of a multicomponent fluid and/or decreasing the viscosity of multicomponent fluid prevents or provides increasing resistance to change in the direction of flow of the multicomponent fluid and its flow directly to the outlet. When this breaks 96 contribute to the formation of spiral trek the Oriya movement of the multicomponent fluid to the outlet 40.

On figa shown that through the inlet 86 into the chamber 84 flows of multicomponent fluid 36 at a relatively high speed, low viscosity and/or high density. Some of the multicomponent fluid 36 can also enter into the chamber 84 through the inlet 88, but this version is actually the primary volume of a multicomponent fluid flows through the inlet 86 and while it is initially directed into the chamber 84 tangent (for example, a zero angle to the tangent to the outer circumference of the flow cells).

When entering into the chamber 84 multicomponent fluid 36 is initially circulates around the outlet 40. For the most part, the trajectory of its movement around the output device 40 94 prevents or at least hinders the redirection of the flow of multicomponent fluid 36 in the radial flow path to the exit. Through the gaps 96 gradually ignored part of the multicomponent fluid 36, moving in a spiral radially inward to the outlet 40.

On FIGU shown that through the inlet 88 into the chamber 84 flows of multicomponent fluid 36 with a relatively low velocity, high viscosity and/or low density. Some of the multicomponent fluid 36 can also enter into the chamber 84 via the inlet 86, but this version is actually the primary volume of a multicomponent fluid protecters input 88 and is directed into the chamber 84 radially (for example, at an angle of 90 degrees to a tangent to the outer circumference of the flow cells).

Multicomponent fluid 36 passes through one of the gaps 96 directly from the inlet 88 to the outlet 40. Thus, in this embodiment, the fixture 94 no significant resistance or does not prevent radial flow of multicomponent fluid 36 to the outlet 40.

When a situation arises in which part of the multicomponent stream 36 with a relatively low velocity, high viscosity and/or low density should circulate around the outlet 40, as shown in figv, gaps 96 allow the multicomponent fluid to quickly change the trajectory of the stream and redirect it in a more straight to the exit. Indeed, when increasing the viscosity of multicomponent fluid, or a decrease in the density or speed of multicomponent fluid devices 94 provide increasing resistance of the circular flow of multicomponent fluid 36 in the chamber 84 than contribute to the rapid change of the trajectory of the stream and passing it through the gaps 96.

It should be noted that the fixture 94 does not need to have a few gaps 96, as multicomponent fluid 36 can take place in a more directly from the inlet 88 to the outlet 40 through a single gap, and the only gap can also skip the thread is virusesa from the entrance 86 spirally radially inwards towards the exit. According to the principles of the present invention device 94 may have any number of gaps 96 (or other areas with low resistance to radial flow).

In addition, one of the gaps 96 need not be located directly between the inlet 88 and outlet 40. Gaps 96 in the device 94 may contribute to the formation of a more direct flow of multicomponent fluid 36 from the inlet 88 to the outlet 40, even if the flow of the multicomponent fluid inside through one of the gaps need some circulation flow of multicomponent fluid around the device.

It is clear that, compared to the variant shown in figv, at the same flow rate in the variant shown in figa more circular flow of multicomponent fluid 36 is characterized by a large energy consumption and, therefore, great resistance to the flow of the multicomponent fluid. If desired the fluid is oil and the water and/or gas are undesirable fluids, it is clear that the system 25 of the regulation of the flow resistance, is shown in figa and 4B, provides less resistance to the flow of multicomponent fluid 36, which is characterized by a high ratio of desired fluid to the proportion of unwanted fluid, and has a greater flow resistance INR is acomponentname fluid 36, characterized by a low ratio of desired fluid to the proportion of unwanted fluid.

Figure 5 shows an example of another configuration of the chamber 84 in which the chamber 84 contains four devices 94, equally spaced from each other and separated by gaps 96. Depending on the desired operational parameters of the system 25 devices 94 can be divided into equal or unequal parts.

On figa and 6B shows an example of another configuration of the system 25 of the regulation of the flow resistance, which differs significantly from the system 25 of the regulation of the flow resistance, shown in figure 3. The difference of this system is that its design at least easier and contains significantly fewer components. Indeed, in the configuration depicted in figa and 6B, between the inlet 38 and outlet 40 system 25 is only the chamber 84.

The camera 84, shown in figa and 6B, has only one input 86. In the chamber 84 also contains devices 94.

On figa shown that through the inlet 86 into the chamber 84 flows of multicomponent fluid 36 at a relatively high speed, low viscosity and/or high density, and flow inside the chamber is affected by the fixture 94. This multicomponent fluid 36 is circulated in the chamber 84, spiraling inward to the outlet 40 and gradually MBT is Kaya device 94 through the gaps 96.

On FIGU shown multicomponent fluid 36 at a low speed, high viscosity and/or low density, which, coming into the chamber 84 via the inlet 86, can quickly change direction and to flow more directly from input to output through the gaps 96.

It is clear that in comparison with the flow of the multicomponent fluid, shown in option on figv and aimed at more directly, at the same flow rate in the variant shown in figa more circular flow of multicomponent fluid 36 is characterized by a large energy consumption and, therefore, great resistance multicomponent stream. If desired the fluid is oil and the water and/or gas are undesirable fluids, it is clear that the system 25 of the regulation of the flow resistance, is shown in figa and 6B, provides less resistance to the flow of multicomponent fluid 36, which is characterized by a high ratio of desired fluid to the proportion of unwanted fluid, and has a greater resistance to the flow of multicomponent fluid 36, which is characterized by a low ratio of desired fluid to the proportion of unwanted fluid.

Although the configurations shown in figa and 6B, for the filing of a multicomponent fluid 36 into the chamber 84 is used only entrance 86, in other variantcopy can be used multiple inputs. Multicomponent fluid 36 may flow into the chamber 84 through multiple inputs simultaneously or in any sequence. For example, multiple inputs can be used if a multi-component fluid 36 is characterized by different characteristics (its components have different velocity, viscosity, density).

Device 94 may represent one or more blades passing in the circumferential direction and having one or more gaps 96. Otherwise or additionally, the device 94 may represent one or more slots in one or more walls of the chamber 84 and held in the circumferential direction. The device 94 may be inward and/or outward with respect to one or more walls of the chamber 84. Thus, it is clear that according to the principles of the present invention can be used in the device of any type, providing a growing impact on the flow of multicomponent fluid 36 to maintain its circulation in the chamber 84 by increasing the speed or density of a multicomponent fluid, or when decreasing the viscosity of multicomponent fluid; and/or providing an increasing resistance to the circulation of multicomponent fluid in the chamber when reducing speed or density of a multicomponent fluid, or with increasing viscous the ti multicomponent fluid.

On figa-7J shows some explaining schematically depicted variants devices 94, and figa-7G shows a cross-sectional view along the line 7-7 shown on figv. In these drawings it is shown that there are many possible options for the design of the device 94, and it is clear that the principles of the present invention is not limited to use in the chamber 84 to any specific configuration of these devices.

On figa shown that the fixture 94 is a wall or blade passing between the upper and lower (as shown in the drawings) walls 98, 100 of the chamber 84. The device 94 in this embodiment, blocks the flow of multicomponent fluid 36 directed from the outer region of the chamber 84 radially inward, except for the part flowing through the gap 96.

On FIGU shown that the fixture 94 is a wall or shoulder blade, is only partially held between the walls 98, 100 of the chamber 84. The device 94 in this embodiment is not blocking the flow of multicomponent fluid 36, directed radially inward, but prevents the change of the trajectory of the flow in the outer part of the chamber 84 from circular to radial.

One input (for example, entry 88) may be placed at such a height relative to the walls 98, 100 of the camera that multicomponent fluid 36 flowing into the chamber 84 cher is C this input, not actually runs onto the fixture 94 (for example, flows above or below this device). Another input (for example, entry 86) may be located at a different height, with a multicomponent fluid 36 flowing into the chamber 84 via this input actually runs onto the fixture 94. The flow of multicomponent fluid 36, the incident on this device feels more resistance.

On figs shows the device 94, representing brushes, teeth or hard wire and providing resistance to the flow of multicomponent fluid 36 that is directed from the outer region of the chamber 84 radially inward. In this embodiment, the device 94 may be entirely or partially between the walls 98, 100 of the camera 84 and can go in and out from both walls.

On fig.7D shows the device 94, representing a number of notches and ledges, passing in the circumferential direction and providing resistance to the flow of multicomponent fluid 36 flowing radially inward. In the chamber 84 may be only indentations, or protrusions, or recesses and protrusions. If in the chamber 84 contains only the notches, the device 94 may not be inside the chamber 84.

On file shows the device 94, representing a number of waves on the walls 98, 100 of the camera 84 and held in the district is the direction. Similar to the configuration shown in fig.7D, waves have recesses and protrusions, but in other embodiments, these waves can have or only indentations, or protrusions, or recesses and protrusions. If in the chamber 84 contains only the notches, the device 94 may not be inside the chamber 84.

On fig.7F shows the device 94, which are partitions or blades passing in the circumferential direction, but offset radially, and outstanding inside of the walls 98, 100 of the chamber 84. According to the principles of the present invention, the number, location and/or configuration of partitions or blades may be different.

On fig.7G and 7H shows the device 94, which is a partition or blade, a prominent inward from the wall 100 of the camera and with the other blade 102 that facilitate axial redirection of the flow of multicomponent fluid 36 relative to the outlet 40. For example, at a certain location of the blade 102 sends a multicomponent fluid 36 through the axial trajectory from exit 40 or to the outlet 40.

At a certain location of the blade 102 promotes mixing of multicomponent fluid 36, coming from several inputs, increases the resistance to the circulation of the fluid flow in the chamber 84 and/or resists the flow at various displaced along the axis of the camera levels, etc. According to the principles of the am of the present invention, the number, the location and/or configuration of blades 102 may be different.

The blade 102 may have a greater resistance to the circular flow of fluids with high viscosity and faster to redirect them to the exit 40. Thus, the device 94 has an increasing resistance to the flow of multicomponent fluid 36 high speed, high density or low viscosity, flowing radially inwards towards the outlet 40, and the blade 102 may provide increasing resistance of the circular flow of multicomponent fluid with high viscosity.

One input (for example, entry 88) may be placed at such a height relative to the walls 98, 100 of the camera that multicomponent fluid 36 flowing into the chamber 84 through the entrance, not actually runs onto the fixture 94 (for example, flows above or below this device). Another input (for example, entry 86) may be located at a different height, with a multicomponent fluid 36 flowing into the chamber 84 via this input actually runs onto the fixture 94.

On Fig shows the device 94, which represents a solid cylindrical wall with gaps 96, distributed on the wall near its upper and lower edges and arranged alternately. The device 94 may be located between the walls 98, 100 of the chamber 84.

On fig.7J shows the device 94, represent the work of a solid cylindrical wall, similar to the wall shown in Fig, and characterized in that the gaps 96 distributed on the wall between the top and bottom edges.

On figa-11 shows examples of additional configurations of the flow chamber 84 and the contained devices 94. Means that can be used in different configurations without deviating from the essence of the present invention, the principles of which are not limited by any specific examples described herein and represented in the drawings.

On figa shown Luggage 84 with two inputs 86, 88, in General terms similar to the chamber shown in figa-5. The main stream of the multicomponent fluid 36 at a relatively high speed, low viscosity and/or high density enters the chamber 84 via the inlet 86 and circulates around the outlet 40. Fixtures 94 provide resistance to the flow of multicomponent fluid 36 that is directed radially inwards towards the outlet 40.

On FIGU shown that the main stream of the multicomponent fluid 36 with a relatively low velocity, high viscosity and/or low density enters the chamber 84 through the inlet 88. One of the devices 94 prevents the direct flow of the stream of the multicomponent fluid 36 from the inlet 88 to the outlet 40, while the multi-component fluid can quickly change direction and begin to wrap around each of the quiet fixtures. Thus, the system 25 has a smaller flow resistance in the case shown in figv than in the case depicted in figa.

On figa shows the camera 84 to one input 86, in General terms similar to the chamber shown in figa and 6B. Multicomponent fluid 36 at a relatively high speed, low viscosity and/or high density enters the chamber 84 via the inlet 86 and circulates around the outlet 40. The device 94 has a resistance to the flow of multicomponent fluid 36 that is directed radially inwards towards the outlet 40.

On FIGU shown multicomponent fluid 36 with a relatively low velocity, high viscosity and/or low density flowing into the chamber 84 via the inlet 86. Fixture 94 prevents the direct flow of the stream of the multicomponent fluid 36 from the inlet 88 to the outlet 40, while the multi-component fluid can quickly change direction and begin to wrap around each of these fixtures, leaking through the gap 96 to the output. Thus, in the case shown in figv, the system 25 has a smaller flow resistance than in the case depicted in figa.

It is argued that by preventing the flow of multicomponent fluid 36 with a relatively low velocity, high viscosity and/or low density flowing directly to the outlet 40 from the entrance 88 (see figv) or from the entrance 86 (see Phi is .9B), the radial velocity of the flow of multicomponent fluid directed to the output, can be reduced without a significant increase in the resistance of the duct system 25.

Figure 10 and 11 shows the chamber 84 with two inputs 86, 88, broadly similar to the configuration depicted in figa-5. The flow of multicomponent fluid 36, at least initially coming into the chamber 84 via the inlet 86, circulates around the outlet 40, and a multicomponent fluid flowing into the chamber through the inlet 88, flows more directly to the output.

Figure 10 shows the many Cup-shaped devices 94, distributed through the chamber 84, figure 11 shows a lot of gadgets in the camera. Devices 94 can provide increasing resistance to the circulation around the output 40 of multicomponent stream 36 with a reduced speed, high viscosity and/or low density. Thus, devices 94 can stabilize the flow of fluid with a relatively low velocity, high viscosity and/or low density flowing in the chamber 84, even though they do not have a significant resistance to the circulation around the output 40 of the fluid at a relatively high speed, low viscosity and/or high density.

In relation to devices 94 in the chamber 84 there are many other possible who's variations of their placement, the configuration, number and so on. For example, devices 94 may be aerodynamic or cylindrical surface, may contain grooves, radially oriented relative to the outlet 40, etc. in Accordance with the principles of the invention may be any configuration, methods of location and/or combination of devices 94.

Based on the foregoing, it is clear that the present invention offers several options to improve the level of technology in the field of regulating fluid flow in a subterranean well. Various configurations of the above-described system 25 regulation of the flow resistance allow for the management of desirable and undesirable fluids in the well without the use of complicated, expensive or potentially unreliable mechanisms. The system 25 is characterized by simplicity and cheapness in relation to the manufacture, operation and maintenance and is reliable in operation.

The above-described invention in relation to the relevant prior art proposed system 25 regulation of resistance to fluid flow in a subterranean well. The system 25 includes a flow chamber 84, through which flows of multicomponent fluid 36. The chamber 84 contains one or more inputs 86, 88, exit 40 and one or more devices 94, preventing the perenapravlenie flow of multicomponent fluid 36 with a circular path, passing around exit 40 on the radial passing to the outlet 40.

Multicomponent fluid 36 can flow into the well through the flow chamber 84.

The device 94 may provide increased resistance to redirect the flow of multicomponent fluid 36 with a circular trajectory, passing around exit 40 on the radial passing to the outlet 40, under the action of one or more of the following factors: a) increased speed of multicomponent fluid 36, b) reduced viscosity of multicomponent fluid 36 in) high density multi-component fluid 36, g) reduced ratio of desired fluid to the proportion of unwanted fluid in a multicomponent fluid 36, d) reduced angle of entrance of multicomponent fluid 36 into the chamber 84 and (e) more intense clash of the multicomponent fluid 36 to the device 94.

The device 94 may have one or more gaps 96, through which a multicomponent fluid 36 can change the direction and flow from the inputs 86, 88 to a greater extent directly to the output 40.

One or more of these inputs can represent at least first and second inputs, and compared with the second input 86 of the first input 88 directs multicomponent fluid 36 to a greater extent directly to the output 40 of the chamber 84.

At least one or more of the decree of the data inputs can be a single input 86.

The device 94 may represent one or more blades and grooves.

The device 94 may be at least inside and outside the walls 98, 100 of the chamber 84.

Multicomponent fluid 36 may flow from chamber 84 through the outlet 40 in the direction of which changes depending on the relationship of the proportion of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid 36.

Multicomponent fluid 36 can flow from the inlet 86, 88 to a greater extent directly to the output 40 with increasing viscosity of multicomponent fluid 36, decreasing the speed of multicomponent fluid 36, with decreasing density of multicomponent fluid 36, with increase of the ratio of the share of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid 36 and/or increase the angle of entrance of multicomponent fluid 36.

The device 94 may reduce or increase the speed of multicomponent fluid 36 flowing from the inlet 86 to the outlet 40.

The above-described invention in relation to the relevant prior art has also proposed the system 25 of the regulation of the flow resistance of the fluid containing the flow-through chamber 84, through which flows of multicomponent fluid 36. The chamber 84 contains one or more inputs 86, 88, exit 40 and one or more devices 94, preventing circulation flux is a multi-component fluid 36 around the outlet 40.

Above described system 25 regulation of the flow resistance, designed for use in a subterranean well, and this system includes a flow chamber 84 containing the output 40 and one or more devices 94, preventing redirection of the flow of multicomponent fluid 36 to the outlet 40. The incoming direction into the chamber 84 of the flow of multicomponent fluid 36 is changed depending on the relationship of the proportion of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid 36.

Multicomponent fluid 36 may flow from the chamber through the outlet 40 in the direction changing depending on the relationship of the proportion of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid 36.

The device 94 may prevent the redirection of the flow of multicomponent fluid 36 with a circular trajectory, passing around exit 40 on the radial passing to the outlet 40.

The gap 96 in the device 94 can pass a stream of the multicomponent fluid 36 from the first input 88 directly to the output 40. In one of the above options, the camera 84 has only one input 86.

The device 94 may be a shoulder or notch. The device 94 may be inward or outward relative to one or more of the walls 98, 100 of the chamber 84.

Multicomponent fluid 36 can crack the AMB from the entrance 86 of the chamber 84 to a greater extent directly to the output 40 with increasing viscosity of multicomponent fluid 36, decreasing the speed of multicomponent fluid 36, with the increase of density of a multicomponent fluid 36, with increase of the ratio of the share of the desired fluid to the proportion of unwanted fluid in a multicomponent fluid 36, with increasing entrance angle of multicomponent fluid 36 and/or decreasing the intensity of crowding multicomponent fluid 36 to the device 94.

The device 94 may contribute to the continuation of the circular motion of the parts of the multicomponent fluid 36, circulating around the outlet 40. Preferably, the device 94 prevents the redirection of the flow of multicomponent fluid 36 with a circular trajectory, passing around exit 40 on the radial passing to the outlet 40.

In the above invention, the proposed system 25 regulation of resistance to flow, including flow-through chamber 84, through which flows of multicomponent fluid 36. The chamber 84 has one or more inputs 86, 88, exit 40 and one or more devices 94, preventing redirection of the flow of multicomponent fluid 36 with a circular trajectory, passing around exit 40 on the radial passing to the outlet 40.

In the above invention describes the system 25 of the regulation of the flow resistance, including device 52 redirection of flow, which is based on the ratio of the share of alternova fluid to the proportion of unwanted fluid in a multicomponent fluid 36 puts the main volume of fluid according to one of the paths 58, 60. Flow chamber 84 system 25 has an output 40, the first input 88, which passes through a first path 60 of the flow, the second inlet 86, which passes through the second path 58 of the stream, and one or more devices 94, preventing radial flow of multicomponent fluid 36 flowing from the second inlet 86 to the outlet 40 to a greater extent than the radial flow of multicomponent fluid 36 flowing from the first inlet 88 to the outlet 40.

The device flow control (for example, 25 of the regulation of the flow resistance) for installation in an underground barrel 12 bore may have an inner surface 98, 100, 110, forming the internal chamber 84, and the inner surface may include a side surface 110 and an opposite end surfaces (e.g. walls 98, 100), with the greatest distance between opposite end surfaces is less than the greatest length of the opposite end surfaces; a first hole (for example, exit 40) in one of the end surfaces (for example, in the wall of 100) and the second hole (for example, entry 86) in the inner surface separate from the first hole, and the side surface 110 is designed to convert the flow from the second hole 86 in the circular flow circulating around the first hole 40; and may further have a PR is a device to change the trajectory of the stream (for example, fixture 94)flowing through the internal chamber 84.

The device 94 to change the trajectory of the stream can be used to convert a stream flowing through the second hole 86 in the circular flow circulating around the first hole 40. The device 94 to change the trajectory of the stream can be used for transmission stream received through the second hole 86, directly to the first hole 40.

The first hole 40 may be output from the internal chamber 84, and the second hole 86 can be an entrance into the internal chamber 84.

The device 94 to change the trajectory of the stream may contain inner wall (for example, see instructions on fig.7F)passing at least one of opposite end surfaces 98, 100. The inner wall may extend from one of opposite end surfaces (for example, from one wall 98 to the second wall 100, as shown in the variant shown in fig.7J). The inner wall may extend from one of opposite end faces, between the upper part of the inner wall and the second opposing face surfaces there is a gap (for example, see instructions on fig.7F).

The device 94 to change the trajectory of the stream may contain the first blade 102 extending from one of opposite end surfaces (for example, from the wall 98 or 100), and the second paddle 102, passing from the second opposite end surfaces.

The device 94 to change the trajectory of the stream may contain one or more components, such as brushes, cloves or stiff wire extending from one of opposite end surfaces 98, 100; excavation, made in one or both of the opposite end surfaces 98, 100; wave performed on one or both opposing end surfaces 98, 100; and/or the blade 102.

The device flow control (for example, 25 of the regulation of the flow resistance) for installation in an underground barrel 12 bore may include cylindrical chamber 84 for receiving incoming through the inlet 86 of the camera stream and channel it to the exit 40 of the camera, with the greatest axial length a (see fig.7G) cylindrically camera 84 is less than the largest diametrical length D cylindrically chamber 84, while cylindrically Luggage 84 circulates flow around the outlet 40 of the camera, and the angle of rotation depends on the characteristics of the incoming stream flowing through the inlet 86 of the camera; and includes fixture 94 to change the trajectory of the stream flowing through cylindrical chamber 84.

The rotation angle can depend on the density of the incoming flow, the viscosity of the incoming on the eye and/or on the speed of the incoming stream.

The increase of the angle of rotation can lead to increased resistance to flow between the inner space of the device 25 and an external environment, and the reduction of the angle of rotation can lead to a reduction in the flow resistance between the internal space of the device 25 and the external environment.

The angle of rotation may depend on the spatial location of devices 94 to change the trajectory of the flux contained in cylindrically chamber 84, relative to the direction vector of the incoming stream flowing through the inlet 86 of the camera.

Cylindrically camera 84 may take the form of a cylinder. Cylindrically camera 84 may have a side surface 110 and an opposite end surfaces 98, 100 and the side surface 110 may be perpendicular to both of the opposite end surfaces 98, 100.

The method of flow control in the underground barrel 12 bore may include receiving stream cylindrically camera device 84 25 flow control in the barrel 12 bore, and cylindrically chamber 84 contains one or more inputs 86, 88 and maximum axial length and cylindrically camera 84 is less than the largest diametrical length D cylindrically camera 84; the direction of flow through the device 94 to deflect the flow in cylindrically chamber 84; obespechenie circulation flow, flowing through cylindrical chamber 84, around the output 40 of the camera, and the angle of rotation depends on the characteristics of the incoming stream flowing through one or more inputs 86, 88 of the chamber.

The circulation flow can be done by increasing the angle of rotation depending on the viscosity of the incoming flow, by increasing the rotation angle depending on the speed of the incoming stream and/or by increasing the angle of rotation depending on the density of the incoming stream.

The direction of flow through the device 94 to change the trajectory of the stream can be performed by increasing or decreasing the angle of rotation depending on the characteristics of the incoming stream flowing through one or more inputs 86, 88 camera, and/or by passing at least part of the flow directly from one or more inputs 86, 88 of the chamber to the outlet 40 of the camera.

The circulation flow can be done by increasing the angle of rotation, which in turn can increase the resistance to flow flowing through cylindrical chamber 84.

It should be understood that various options described above can be applied in various kinds of spatial orientation, including an inclined, inverted, horizontal, vertical, etc. and in different configurations without deviating from the essence of this image is to be placed. Embodiments of the invention shown in the drawings, shown and described only as examples of practical application of the principles of the present invention are not limited to any specific features of these embodiments of the invention.

Of course, based on a thorough acquaintance with the above description of embodiments of the invention the expert it is clear that the individual components of the data specific embodiments of the invention may be modified, supplemented, replaced, eliminated, and in these specific embodiments of the invention may be made other changes within the principles of the present invention. Accordingly, the above description is used as an example and is intended for a clearer understanding of the invention, and the nature and scope of the present invention confined solely by the features indicated in the claims, and equivalent signs.

1. The device flow control for installation in an underground wellbore containing an inner surface forming an internal chamber, with the inner surface includes a side surface and opposite end surfaces, with the greatest distance between opposite end the surfaces is less than the greatest length of the opposite end surfaces; first hole in one of the end surfaces; a second opening in the inner surface, spaced from the first hole, and the side surface is configured to convert the flow from the second hole in the circular flow circulating around the first hole; and a device for changing the trajectory of the stream flowing through the internal chamber.

2. The device according to claim 1, characterized in that the device for changing the flow path configured to convert the flow from the second hole in the circular flow circulating around the first hole.

3. The device according to claim 2, characterized in that the device for changing the flow path is arranged to pass flow from the second aperture to the first aperture.

4. The device according to claim 1, wherein the first hole is an exit from the inner chamber, and the second hole is the entrance into the inner chamber.

5. The device according to claim 1, characterized in that the device for changing the flow path includes an internal wall, passing at least one of opposite end surfaces.

6. The device according to claim 5, wherein the inner wall extends from one of opposite end surfaces to the second of the opposite of the one end surface.

7. The device according to claim 5, wherein the inner wall extends from one of opposite end faces, between the upper part of the inner wall and the second opposing face surfaces there is a gap.

8. The device according to claim 1, characterized in that the device for changing the flow path includes a first blade extending from one of opposite end surfaces, and a second blade extending from the second opposing face surfaces.

9. The device according to claim 1, characterized in that the device for changing the flow path contains one or more components, such as brushes, cloves or stiff wire extending from one of opposite end surfaces.

10. The device according to claim 1, characterized in that the device for changing the flow path includes a notch in one or both opposing end surfaces.

11. The device according to claim 1, characterized in that the device for changing the flow path contains waves performed on one or both opposing end surfaces.

12. The device according to claim 1, characterized in that the device for changing the flow path contains a shovel.

13. The device flow control for installation in an underground wellbore, including the General cylindrical chamber for admitting students through the chamber inlet flow and direction to the exit chamber, with the greatest axial length cylindrically camera is less than the largest diametrical extent cylindrically camera, and cylindrically Luggage circulating flow around the output of the camera, and the angle of rotation depends on the characteristics of the incoming flow entering through the inlet chamber; and a device for changing the trajectory of the stream flowing through cylindrically the camera.

14. The device according to item 13, wherein the angle of rotation depends on the density of the incoming stream.

15. The device according to item 13, wherein the angle of rotation depends on the viscosity of the incoming stream.

16. The device according to item 13, wherein the rotation angle depends on the velocity of the incoming stream.

17. The device according to item 13, wherein the increase of the angle of rotation increases the flow resistance between the internal space and an external environment, and the reduction of the angle of rotation decreases the resistance to flow between the internal space and the external environment.

18. The device according to item 13, wherein the angle of rotation depends on the spatial location of the device to change the trajectory of the flux contained in cylindrically the camera relative to the direction vector of the incoming stream flowing through the chamber inlet.

9. The device according to item 13, wherein cylindrically chamber has the shape of a cylinder.

20. The device according to item 13, wherein cylindrically camera has a side surface and opposite end surfaces and a side surface perpendicular to both of the opposite end surfaces.

21. The method of flow control in a subterranean wellbore, comprising the following steps:
receiving stream cylindrically camera devices regulate the flow in the wellbore, and cylindrically camera has entrance and greatest axial length cylindrically camera is less than the largest diametrical extent cylindrically camera;
the direction of flow through the device to change the trajectory of the stream in cylindrically the chamber; and
ensuring the circulation of the stream flowing through cylindrically the camera around the output of the camera, and the angle of rotation depends on the characteristics of the incoming stream flowing through the chamber inlet.

22. The method according to item 21, wherein the circulation flow is carried out by increasing the angle of rotation depending on the viscosity of the incoming stream.

23. The method according to item 21, wherein the circulation flow is carried out by increasing the rotation angle depending on the speed of the incoming stream.

24. The method according to the .21, characterized in that the circulation flow is carried out by increasing the angle of rotation depending on the density of the incoming stream.

25. The method according to item 21, wherein the direction of flow through the device to change the trajectory of the stream is carried out by increasing or decreasing the angle of rotation depending on the characteristics of the incoming stream flowing through the chamber inlet.

26. The method according to item 21, wherein the direction of flow through the device to change the trajectory of the stream is carried out by passing at least part of the flow directly from the inlet chamber to the outlet chamber.

27. The method according to item 21, wherein the circulation flow is carried out by increasing the angle of rotation, which in turn increases the resistance to flow flowing through cylindrically the camera.



 

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6 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves drilling of a deposit with production wells crossing a formation consisting of a water-saturated zone separated with a non-permeable natural interlayer with an oil-saturated zone, lowering of a casing string with further formation perforation, investigation of its water-oil saturation and their deposit intervals, dimensions of non-permeable natural interlayer, creation of a screen from an insulating compound, which separates water-saturated zone of the formation from oil-saturated zone, cutting of some part of the casing string, enlarging the well shaft at that interval; filling of the enlarged interval of the well shaft with insulating compound, drilling of insulating compound after the insulating compound hardening. At arrangement of a water-saturated zone below the oil-saturated zone of the formation and thickness of the non-permeable natural interlayer of less than 3 m there cut is some part of the casing string from the bottom of the non-permeable natural interlayer to the roof of the oil-saturated zone of the formation, and the well shaft at that interval is enlarged. After that, a setup consisting of a cutter with teeth and holes, a shank and an attachment assembly is assembled on the well head in an upward direction. With that, the shank is made in the form of pipe with the diameter that is smaller than the casing string diameter. A check valve is installed on the lower shank end. The shank length is chosen so that it is equal to distance from the mine face to roof of the oil-saturated zone of formation plus two metres. The assembled setup is connected by means of a left-hand adapter to a filling pipe string and lowered to the casing string of the well till the cutter teeth are borne against the mine face. Cutter teeth are directed to the side opposite to rotation direction of the filling pipe string at detachment of the filling pipe string from the shank. Rotation of the filling pipe string is performed from the well head in a clockwise direction through 8-10 revolutions and detachment of the filing pipe string from the shank is performed. The filling pipe string is raised by 1.5 m; insulating compound is pumped to the filling pipe string and pumped with forcing-through liquid to the tubular annulus; brought to the shank head; the filling pipe string with the left-hand adapter and the attachment assembly is removed from the well, and the insulating compound is left till it is cured. Microcement is used as an insulating compound. After microcement is cured, drilling of the check valve is performed from the inner space of the shank and excess microcement is removed from the shank. Then, the well is brought into development as a production well for extraction of the product from the oil-saturated zone of the formation or as an injection well for pumping of liquid to the water-saturated zone of formation.

EFFECT: improving development efficiency owing to excluding behind-the-casing flows; reducing labour intensity and duration of the method.

6 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: casing is sunk into well to perforate the bed. Oil and water saturation intervals and impermeable seam sizes are analysed. Casing part is cut out to expand the borehole in said interval. Fluid is injected in string for packer to define the bed specific capacity. Fluid circulation is defined by injecting fluid via casing string-borehole annulus. In case circulation exists, isolation composition is injected to produce isolation bridge inside casing string 20-30 m above perforation interval. In case circulation does not exist, isolation composition is discharged via casing string-borehole annulus to interval of perforation of oil-and water saturated bed zone to fill expanded bore expanded interval with isolation composition. After hardening of isolation composition, isolation composition is drilled to produce the shield opposite said saturated zone. Isolation quality is analysed. Bed perforation is repeated to resume its development.

EFFECT: lower labour input, accelerated process, higher isolation quality.

7 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves drilling of a deposit with production wells crossing the formation with water-saturated and oil-saturated zones separated with a non-permeable natural interlayer, lowering of a casing string with further formation perforation, investigation of its water-oil saturation and their deposit intervals, dimensions of non-permeable natural interlayer, creation of a screen from an insulating compound, which separates water-saturated zone of the formation from oil-saturated zone, cutting of some part of the casing string, enlarging the well shaft at that interval; filling of the enlarged interval of the well shaft with insulating compound, drilling of insulating compound in the well so that the screen remains opposite to oil-saturated zone of the formation after waiting period of the insulating compound curing, perforation opposite to oil-saturated zone of the formation, and development of the well. At arrangement of non-permeable natural interlayer below oil-saturated zone of formation and thickness of non-permeable natural interlayer over 8 m at the bottom interval of non-permeable natural interlayer there installed is a blind packer, and temporary clogging of oil-saturated zone of formation is performed. Some part of the casing string is cut out to 1.0-1.5 m at height of 1.0 m above bottom of non-permeable natural interlayer, and in casing string interval at height 1.0-1.5 m below roof of non-permeable natural interlayer there made are holes across the casing string. Cementing casing string is lowered to well with through drillable packer, packer is installed in casing string opposite to non-permeable natural interlayer in interval between cut out part and holes in casing string, circulation of fresh water is induced on well head along cementing casing string under packer via casing string annulus and intertube space on well head by pumping of fresh water. If there is no fresh water circulation, impulse treatment of non-permeable natural interlayer by mud acid composition is performed. When circulation is available pumping of fresh water is stopped, then insulating compound is pumped via grout casing string and is forced into casing string annulus in interval of non-permeable natural interlayer with formation of insulating bridge in inner space of casing string to the bottom of oil-saturated zone of the formation. Then grout casing string is lifted above the bottom of oil-saturated zone of the formation and surpluses of synthetic resin are washed out from intertube space of casing string. After some period required for synthetic resin curing through and blind packers are drilled as well as insulating bridge, temporary clogging of formation is removed and well is brought into operation.

EFFECT: improving efficiency of the method owing to excluding behind-the-casing flow in the well between water- and oil-saturated zones of the formation and possibility of their simultaneous-separate development.

2 ex, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves drilling of a deposit with production wells crossing the formation with water-saturated and oil-saturated zones separated with a non-permeable natural interlayer, lowering of a casing string with further formation perforation, investigation of its water-oil saturation and their deposit intervals, dimensions of non-permeable natural interlayer, creation of a screen from an insulating compound, which separates water-saturated zone of the formation from oil-saturated zone, cutting of some part of the casing string, enlarging the well shaft at that interval; filling of the enlarged interval of the well shaft with insulating compound, drilling of insulating compound in the well so that the screen remains opposites oil-saturated zone of the formation after waiting period of the insulating compound hardening, perforation opposite oil-saturated zone of the formation, and development of the well. At arrangement of water-saturated zone below oil-saturated zone of the formation and thickness of non-permeable natural interlayer of 0.5 to 4 m at the bottom interval of non-permeable natural interlayer there installed is a blind packer; some part of the casing string is cut out from the blind packer to the roof of the formation oil-saturated zone; the well shaft is expanded at the interval of the cutout part; the expanded well shaft interval is filled with insulating compound. Microcement is used as the above insulating compound so that an insulating bridge is obtained. After waiting period of microcement hardening, the insulating bridge and the blind packer are drilled so that the screen remains opposite non-permeable natural interlayer and oil-saturated zone of the formation with the diameter equal to inner diameter of the casing string; water-saturated formation zone is cutout by placing in the casing string below the cut-out part of a stationary packer with a perforated shank with a limit stop on the working face from below and a sealing joint from above. After that, the cut-out section of the casing string is fixed in the well by lowering an additional string with its installation opposite the cut-out section of the casing string and tight fixation of upper and lower ends of the additional string in the casing string above and below the cut-out section in the well. When oil-saturated zone of the formation is being introduced to the development, drilling perforation of an additional string is performed opposite oil-saturated zone of the formation. During development of water-flooded oil deposit, periodic operation of oil-saturated and water-saturated formation zones is performed.

EFFECT: improving efficiency of the method owing to excluding behind-the-casing flow in the well between water- and oil- saturated zones of the formation.

6 dwg

FIELD: oil and gas industry.

SUBSTANCE: according to the proposed method, after a tubing string is removed from the well to the interval of flooded part of productive formation, a sand plug is inwashed. Above it at the interval of the non-flooded part of productive formation there installed is an insulating cement bridge from hydrophobisating cement composition. After completion of waiting-on-cement period (WOC), it is drilled and a cement ring is left on walls of the production string. The sand plug is removed below the cement ring in flooded part of the productive formation. An insulating packer lowered on a string of process pipes is installed on the roof of productive formation. At the interval of the flushed sand plug there pumped under pressure through existing perforation holes of flooded part of productive formation or through newly created process openings for waterproofing is waterproofing composition; waterproofing composition is reinforced with a reinforcement cement bridge from cement mortar based on cement of normal density, which is installed on the well shaft. After the reinforcement cement bridge is installed, the insulating packer is unpacked, and the string of process pipes is lifted. After wait-on-cement time (WOC) is over and strength and leakage test of cement bridge is completed, the pipe string with the packer is removed from the well, repeated perforation of the non-flooded part of productive formation covered with cement ring is performed in the most effective gas-saturated part of the section. Acid treatment of newly developed perforation interval is performed to destruct the cement ring; a new tubing string is lowered to the well and the well is developed. After stable influx of gas is obtained from the formation to the well there pumped and forced through to the bottom-hole zone of the formation is mixture of methanol with non-ionogenic surface-active substance to remove water component of the filtrate of hydrophobisating cement compound, the well flaring is performed till the well reaches the working mode and then it is put into operation.

EFFECT: improving insulation efficiency of influx of formation water without contamination of high-permeability non-flooded gas-saturated intervals of productive formation.

3 ex, 7 dwg

FIELD: oil and gas industry.

SUBSTANCE: according to the first alternative a flow resistance control system includes a cyclone through which multicomponent fluid flows and the cyclone input is coupled to the cyclone chamber with at least two channels. Flow resistance of the multicomponent fluid passing through the cyclone depends on rotational intensity of the multicomponent fluid at the cyclone input. According to the second alternative a flow resistance control system includes the first cyclone with input and the second cyclone receiving the multicomponent fluid from the first cyclone input through the input coupled to a cyclone chamber with at least two channels. Flow resistance of the multicomponent fluid passing through the second cyclone depends on rotational intensity of the multicomponent fluid at the first cyclone input.

EFFECT: effective control of fluids flow.

10 cl, 6 dwg

FIELD: mining.

SUBSTANCE: group of inventions relates to mining and can be used for finishing, preparing and/or operation of the well bore. The device comprises a tubular housing defining an internal channel, one or more injection inflow regulators and one or more operational inflow regulators. One or more injection inflow regulators may comprise one or more first back-flow valves in fluid communication with the internal channel. And each first back-flow valve provides flowing of fluid through it from the inner channel to the wellbore area and substantially blocking the reverse flow of fluid through it. One or more operational inflow regulators may comprise one or more second back-flow valves connected to the tubular housing. And each second back-flow valve provides flowing of fluid through it from the wellbore into the inner channel and substantially prevents the reverse flow of fluid through it.

EFFECT: technical result is to increase the efficiency of finishing of a well drilled with large vertical deviation.

22 cl, 10 dwg

FIELD: mining.

SUBSTANCE: group of inventions relates to mining and can be used for the fluid flow control in the wellbore. The method comprises providing a hydraulic diode in the channel of hydraulic communication with the wellbore and the displacement of fluid through the hydraulic diode. At that the hydraulic diode is located inside the wellbore. The tool comprises a tubular diode sleeve having a diode opening, a tubular intrachannel sleeve mounted concentrically in the diode sleeve, and the intrachannel sleeve comprises an inner passage which is in hydraulic communication with the diode opening, and a tubular external channel sleeve inside which the diode sleeve is concentrically mounted. Moreover the external channel sleeve comprises an outer channel which is in hydraulic communication with the diode opening. And, in this tool the shape of the diode opening, the position of the inner channel relative to the diode opening and the position of the outer channel relative to the diode opening determine the resistance to the flow of the fluid flowing into the inner channel from the outer channel, and the other resistance to the flow of the fluid flowing into the inner channel from the outer channel.

EFFECT: increase of the efficiency of controlling the fluid flow in the wellbore.

19 cl, 13 dwg

Downhole device // 2529310

FIELD: oil-and-gas industry.

SUBSTANCE: proposed plant comprises tubing, one packer, electric cable and one or several shutoff-bypass devices. Additionally, its comprises control device arranged at well mouth and at least one downhole motor secured at said tubing and connected with shutoff-bypass device and, via electric cable, with control device. Besides, this plant comprises actuator composed of plunger pair or piston pair with functions of hydraulic pressure pump with hydraulic pressure channel connecting said downhole motor with shutoff-bypass device, or hydraulic actuator composed of hydraulic pressure pump with hydraulic pressure channel.

EFFECT: optimised and high reliability of operation.

15 cl, 14 dwg

FIELD: oil and gas industry.

SUBSTANCE: method involves opening of strata by injectors and producers, injection of working fluid and recovery of the product. The section is selected where at least 20 thousand t of remaining reserves are available for each producer, an injector is selected with three perforated strata, to the lower stratum with the biggest permeability injection of working fluid is limited up to minimum values of 40 m3/day as the most, unlimited, as maximum as possible injection of the working fluid is done to other strata. The injector is operated in this mode, status of producers in the second stratum is analysed; when bottomhole pressure increases per 10-15% and water cut increases per 40% in the nearest producer of the second stratum, intensification of the operation mode is made for the producer. When bottomhole pressure increases per 10-15% and water cut increases per 40% in the nearest producer of the second stratum complete or partial limitation of injection is done for the second stratum. Control is carried out over bottomhole pressure in the area of complete or partial limitation of injection for the lowest and the most permeable stratum, and when decrease in bottomehole pressure per 10-15% below saturation pressure is confirmed injection volumes are increased in order to prevent decrease in oil recovery volume. Limitation of injection to the most permeable stratum and status analysis of the producers in the second stratum are repeated periodically.

EFFECT: improving oil recovery of the deposit.

2 ex

FIELD: oil and gas industry.

SUBSTANCE: operation method for a well placed in oil-water contact zone contains the stages at which the well is perforated in the oil-containing area of the stratum and water-containing area of the stratum; dual product extraction is arranged from the oil-containing area and water-containing area of the stratum through the above perforation with the controlled rate; at that well production rate is controlled and equipment is selected for production on the basis of the certain ratio and periodically changed physical and chemical and reservoir properties.

EFFECT: improvement of efficiency and reliability for operation of wells placed in the oil-water contact zone.

3 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes determination of an average distance between fractures, division of the horizontal hole in sections by packers, running in of devices for water influx control at the tubing string to the horizontal hole, product withdrawal from the horizontal well. At that the horizontal hole is divided by water-swellable packers into sections with length of each section from 20 m up to 50 m depending on the distance between fractures and length of the horizontal hole. The devices for water influx control in the horizontal hole have openings in walls with diameter d, which is comparable to the size of oil capillary tubes for this reservoir and the openings are made of water-repellent material. Length of each device for water influx control is from 5 m up to 12 m, and total number of devices does not exceed 5 pieces between packers in each section, total number of the openings N in devices for water influx control in the whole horizontal hole, depression and diameter d of the openings is determined by the ratio. Product from the well is produced provided that hydrodynamic forces created by bottomhole pressure do not exceed capillary forces of oil movement through openings in the devices for water influx control, i.e. depression in the well meets the above ratio.

EFFECT: increase in oil recovery factor.

1 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: in compliance with one of versions, this device comprises well with packers dividing the well into two or more spaces communicated with productive formations, downhole pump and valve system to be connected to pump inlet in one or several formations. Shank is arranged under packers and connected with tubing while opening for communication with the pump nearby interpacker space is located at maximum distance from packets but not lower than the rood of formation communicated therewith.

EFFECT: higher efficiency.

3 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises display-based visualisation unit, computer system, mechanical extraction device and downhole motor. Additionally, this device incorporates the units of downhole telemetry system connected with downhole motor. Outputs of this system are connected with the surface telemetry system connected via controller with the first visualisation unit, 1st, 2nd, 3rd, 4th and 5th processing units. Note also that outputs of [processing units are connected via computer with 2nd visualisation unit.

EFFECT: higher accuracy of evaluation owing to application of classifiers.

3 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: proposed method comprises construction of horizontal and/or inclined wells. Patches are applied at boundaries of zones of different permeability. Technological strings with packers are lowered to be set opposite patches to seal annular space. At a time, injection and production wells are separately operated at opening and closing of appropriate zones. Sections with shaft high watering and their hydrodynamic communication with nearby wells are defined. Technological pipe string is lowered in the well with hydrodynamic communication. Watered ground is isolated on both sides with injection of water-shutoff agent in one of the wells and intensive removal of watered fluid from wells equipped with technological pipes. At decrease in pickup and technological holding, injection of water-shutoff composition is effected in all wells equipped with technological pipes to make water-shutoff shield. Thereafter, sections processed by water-shutoff compositions in every well are tightly shutoff from inside and put in operation.

EFFECT: higher yield, lower extraction of produced water.

2 cl, 2 dwg

FIELD: mining industry.

SUBSTANCE: invention can be used in case of gas-lift operation of wells equipped by free piston-type installations. Invention envisages stopping well, connecting tube space and annular space in wellhead, recording bottom zone and wellhead pressures in tube and annular spaces, and computing well operation parameters using inflow curve plotted according to differences of bottom zone and wellhead pressures. Volume of produced fluid is found from potential output of formation and from condition of output of free piston. When comparing these volumes, parameters of well are computed in the base of minimum volume value.

EFFECT: optimized well operation.

2 dwg

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