Removable bouble-ended of garipov's regulator

FIELD: oil and gas production.

SUBSTANCE: invention elates to technology of gas-and-oil producing industry and can be used for regulation of parametres of medium flow, particularly regulation of medium consumption, pressure difference, pressure in pipe string, bottomhole or annular pressure, as at extraction of fluid, as and at discharge of actuating medium into well. Removable double-ended regulator contains casing with side jet openings and axial pass, located between fishing head and shank end, in which there are implemented hydraulic channels for communication to medium. In casing it is installed cross solid partition, separating cavity of casing for two noncommunicating cavities, and side jet openings are implemented in casing before and after partition. External diametre of casing part, in which there are implemented side jet openings, yield to external diametre of the rest part of casing. Invention is developed in dependent claims.

EFFECT: increase of effectiveness and service life of extractive and/or forcing stratums of wells ensured by reduction of intensity of washing out of inner surfaces of regulator's casing.

11 cl, 5 dwg

 

The invention relates to techniques for the oil and gas industry and can be used to control the parameters of flow, in particular the regulation of the flow rate, differential pressure, the pressure in the string of pipe, downhole or annulus pressure, as in the extraction fluid and discharge fluid into the well.

Known valve for flow control (EN 2029073 C1, E21B 43/00, publ. 20.02.95), containing a hollow body with outer grooves, one or more lateral throughput and reduced axial channels and sealing elements, inside of which is installed valves with rod connected top and bottom with one or two bellows.

Known valve Sharifov (EN 2101466 C1, E21B 34/06, 43/00, publ. 10.01.98), containing a hollow body with one or more lateral throughput and reduced axial channels and sealing elements, inside of which is installed gates connected top and bottom with a movable disconnector in the form of a pair of telescopic hollow cylinder - a hollow stem.

Known valves with limited their diameters made two-way direction to increase capacity of the section on the working gas when gas-lift well operation. However, they are not acceptable for injection, wellhead and pumping wells, as their calibration is performed with compressed gas at about the found pressure (not more than 13.5 MPa) and cannot be adjusted high pipe, downhole and the formation pressure of the well.

Known removable regulator dvuhstochenye Sharifov (EN 2256778 C1, E21B 34/06, 43/00, publ. 20.07.05), taken as a prototype, comprising a housing with an external groove, lateral throughput and reduced axial channels, the lower and upper minieterial with outer sealing elements, the fishing head with side-bandwidth channels and/or through the axial through channel and the shank with lock, body, or lower and upper minieterial, and/or fishing head and/or shank of the regulator is made with internal mounting slots under gates or bores, at least two of which are placed opposite with the same or different wall and/or outer diameters removable narrowing items without or with reverse free or spring-loaded closures with limited progress in the area of the total flow area removable narrowing elements are made smaller than the area of the total cross-section of the lateral bandwidth of the channels of the body.

Known regulator is not possible to effectively operate the well, because of the high velocities of fluid filtration and turbulence in the flow in the controller casing is narrowing between elements of rapid erosion and wear of the inner surfaces of the casing and landing slots, which set the narrowing go/studiosa elements and closures, which leads to rosregulirovanie and premature system failure. It should be noted that washed itself not so much wear-resistant part of the regulator is removable narrowing element-fitting as a landing site on which to install the fitting and the clamp fitting. In dvukhstruinom regulator the most significant destruction observed in the mixing zone counter multidirectional flows. All the valves are primarily designed for use in gas-lift wells, where the main phase flow is presented by gas, and is not designed to work with liquids with high erosion ability, especially when mixing and turbulence in the flow, including solids and destructive cavitation effects.

The technical result is achieved by carrying out the invention, the efficiency and durability of the extraction and/or injection reservoir wells by reducing the intensity of erosion of the internal surfaces of the housing of the controller.

This technical result is achieved by the fact that the removable double-sided regulator includes a housing with side carrying holes and the axial through channels located between the extractor head and the shank, which is made of hydraulic channels for communication with the environment. In the case set is established with representation from a cross solid partition wall, divides the body cavity into two nesoobschaemost cavity, and the side access hole is made in the case before and after partition. The outer diameter of the housing in which the side access hole, inferior to the outer diameter of the rest of the body.

In addition, the fishing head or the shank is made with a blind end, and the body is made of a composite. Form transverse partitions may have a streamlined spherical or conical shape. The partition can have multiple rows of through holes. In the axial channels of the housing can be installed packing elements made in the form of balls or cones, or spheres or hemispheres, or pistons, without or with rods or guides. The diameter of the axial channel in the hollow body, the head and the shank are made the same. The area equivalent to the total cross section of the side access hole of the housing exceeds the cross-sectional area of the axial channels. In the housing can be installed narrowing elements made, for example, in the form of a fitting, or choke, or a saddle, or nozzle, and the cross-sectional area narrowing element is equal to the sectional area of the respective suitable to him axial channels. Removable controller two-way can optionally be equipped with measuring devices for the recording of physical parameters such as pressure, te is the temperature, watering or expense.

The use of a separator flows in the form of a continuous transverse partition in the casing of the regulator for separate removal multidirectional flows will reduce the hydraulic resistance will increase the duration of operation of the regulator. Use as separator flows transverse partitions also prevent the mixing of flows. Form transverse partitions may have a streamlined spherical or conical shape, which will reduce turbulence and turbulization of the flow at the exit flow from the axial bandwidth of the channels in the side holes.

Additional application of the same diameter axial channel in the hollow body, the head and the shank, on the one hand, will reduce the hydraulic resistance of the regulator, because it will reduce the number of tabs is the"irregularities" and, accordingly, the turbulization, cavitation and turbulence of the flow. It is necessary to have a slight excess of a square equivalent to the total cross section of the lateral access openings on the device (controller) over the cross-sectional area of the axial channels. When installed narrowing elements, for example, the fittings, the cross-sectional area of the nozzle must be equal to the area of cross-section corresponding to appropriate to him axial channels, which will reduce the size and intensity of interaction of the flow with area inland is it the surface of the channels, on the other hand, will reduce due to the lack of tabs blurring the area of the inner surface of the regulator as a whole.

Figure 1 shows a section of the regulator with a hollow casing including a partition separator flows with separate lateral holes; figure 2 - is defined in the axial channel of the sealing elements, figure 3-5 shows the case of the controller with different forms of execution of the partitions of the separator flows.

The controller includes (see figure 1) fishing head 1, a shaft 2 and located between the housing 3. In the fishing head 1 and the shank 2 has a hydraulic axial 4, 5 and sides 6, 7 channels for communication with the environment, which is defined as operating, technological, downhole fluid, wireline fluid, water. In the housing 3 is made of axial channels 8 and 9, which are connected with the hydraulic axial channels 4 and 5, respectively, of the fishing head and shank. In case 3 with continuous transverse partition 10 in the form of the separator flows, which divides the cavity of the housing 3 into two nesoobschaemost cavity. Before and after the partition 10 in the housing 3 or in part, made the side 11, 12 holes for the intended output medium. The outer diameter part of the housing 3, which are located side 11 and 12 carrying holes are made smaller in diameter than the outer diameter of the rest of the cha the t case 3. The controller is equipped with sealing elements 14 and 15 mounted on mangudadatus 16, 17 with the fixation elements in the form of a collet 18.

The partition 10 may be made integral, for example, from the bottom 19 and the upper 20 parts (2, 5). In the axial channels 8 and 9 can be arranged sealing elements 21 and 22 (figure 2). In case 3 before and/or after the septum 10 can be installed also narrowing elements, for example in the form of fittings 23 and 24 (figure 2), or blank 25 (figure 3). The casing 3 may be made integral, for example, from the clutches 13, between which is placed a partition 10.

The sealing elements 21 and 22 can be performed, for example, in the form of a sphere, cone, sphere, hemisphere, piston, and TPES or rod or a guide, to regulate the flow and/or exceptions reverse flow when pressure testing the tubing of the well. Narrowing elements 23 and 24 can be fixed outer seals, retaining rings, thrust bushings or collars and threaded connections of the hollow body.

The shape of the septum 10 can have a streamlined outer surface and the slice presented in the form of a cone (Fig 1, 4), areas (2), prism (figure 5), straight (3) or angular orientation (figure 5) to the side holes 11, 12, and the partition can have multiple rows of through holes (figure 4).

Partition material, so the e and a narrowing elements, for example, connections can be made in a durable performance to sustainable mechanical and chemical stresses, corrosive liquid environment, and presents, for example, various mnogokomponentnye connections, steel, metal, powder fillers, mineral, synthetic materials.

The fishing head 1 can be performed with a blind end or end-to-end axial and/or lateral, at least one through channel different shape and configuration (Fig.1-2).

Shank 2 (see Fig.1-2) can be performed with plugged end or end-to-end axial and/or at least one side of the hydraulic channel.

The controller may further have a pressure gauge, thermometer, flow meter, moisture meter, resistivity meter or other measuring devices (Fig. not shown).

The controller operates as follows.

In injection wells, in which injection is used downhole camera with crossing channels in downhole pocket install removable double-sided regulator housing 3. The injected medium passing through the flow channels 4-7 shank 2 of the fishing head 1 of the regulator is supplied separately with the two sides in the channels 8 and 9 in the housing 3 of the regulator. Two streams separated by a partition wall 10, through the respective side openings 11 and 12, the moustache is remseda in his pocket borehole camera in the space between the body portion 3 with a smaller outer diameter and the inner bore of the pocket borehole camera and then through the side hole borehole camera falls into the reservoir.

1. Removable two-way regulator, comprising a housing with side carrying holes and the axial through channels located between the extractor head and the shank, which is made of hydraulic channels for communication with the environment when installed in the housing transverse solid wall that divides the body cavity into two nesoobschaemost cavity, and the side access hole is made in the case before and after the partitions, and the outer diameter of the housing in which the side access hole, inferior to the outer diameter of the rest of the body.

2. Removable knob bilateral according to claim 1, characterized in that the shape of the cross partitions may have a streamlined spherical or conical shape.

3. Removable knob bilateral according to claim 1, characterized in that the partition can have multiple rows of through holes.

4. Removable knob bilateral according to claim 1, characterized in that the fishing head or the shank is made with a blind end.

5. Removable knob bilateral according to claim 1, characterized in that the casing is made of a compound.

6. Removable knob bilateral according to claim 1, characterized in that the axial channels of the housing can be installed packing elements made in the form of balls or cones, or spheres or hemispheres, or pistons,without or with rods, or with the guides.

7. Removable knob bilateral according to claim 1, characterized in that the diameter of the axial channel in the hollow body, the head and the shank are made equal.

8. Removable knob bilateral according to claim 1, characterized in that the area equivalent to the total cross section of the side access hole of the housing exceeds the cross-sectional area of the axial channels.

9. Removable knob bilateral according to claim 1, characterized in that the housing can be installed narrowing elements made, for example, in the form of a fitting, or choke, or a saddle, or attachments.

10. Removable knob bilateral according to claim 9, characterized in that the cross-sectional area narrowing element is equal to the sectional area of the respective suitable to him axial channels.

11. Removable knob bilateral according to claim 1, characterized in that it further equipped with measuring devices for the recording of physical parameters such as pressure, temperature, watering or expense.



 

Same patents:

FIELD: oil-and-gas production.

SUBSTANCE: device includes lift string of pipes and plunger pump, implemented with ability of hydraulic communication of over-plunger and under-plunger parts. Pump casing on inner surface is outfitted by rows of vertical slots of length Lo with distance between to edges of underlying and bottom edges of overlying rows of slots Lp. Plunger on outside surface at a distance Lt from bottom butt is outfitted by annular chamfers with openings inside the plunger. Additionally Lp≥2Lo, Lt≤0,5Lo, and plunger's length of stroke Lx=(8-10)(Lo+Lp). Device is outfitted by tail, located lower the pump.

EFFECT: increasing efficiency of dilatative-wave action in well.

1 dwg

FIELD: oil and gas production.

SUBSTANCE: group of inventions refers to procedure of pumping lift gas into production flow string of oil well via one or several devices for control of yield of lift gas and to facility applied thereon for control of lift gas yield. The essence of the invention is as follows: the facility consists of a tubular case of a valve with a flow passage connected with one end to pressure pipeline of lift gas, while with another end to internal space of production string; further the facility consists of a rotation body of a flap valve connected to the body of the valve and installed in the flow passage so that when the body of the valve turns into an open position it is essentially oriented parallel to the flow passage. When the body of the valve rotates into a closed position it orients perpendicularly to the flow passage and is pressed to a circular saddle of the valve thus shutting off lift gas pass via the flow passage. Also there is a protective bushing designed to slide in the flow passage between the first position, wherein the bushing passes through the circular saddle of the valve during rotation of the valve body in the open position protecting the valve saddle and valve body from wear under flow of lift gas or other fluid, and the second position wherein the bushing passes through a part of the flow passage before the valve body during rotation of the valve body in the closed position. There is a flow limiter forming a part of the protective bushing of the valve; dimension of the limiter produces different pressure with lift gas flowing through it; difference in pressure actuates the bushing to move into the first position. Also the bushing is characterised with a tapered narrowing part. External diametre of the bushing gradually diminishes in a successive direction of the bushing; the first flexible sealing ring is installed in the case before the saddle of the valve, therefore external surface of the narrowing part of the saddle is pressed to internal surface of the first sealing ring when the bushing is in its first position and in such way there is ensured an impenetrable for fluid sealing in circular space between the narrowing part of the bushing and the tubular body of the valve; as a result, in the second position of the bushing, the first sealing ring just not tightly contacts the narrowing part of the bushing.

EFFECT: facilitating efficiency of procedure and reliability of device operation.

10 cl, 2 dwg

Wellhead equipment // 2368759

FIELD: oil industry.

SUBSTANCE: invention refers to oil production, and namely to wellhead equipment. It consists of a casing head with side taps, which rests upon the pipe hanger with side taps, and the device for relieving pressure from the tube space. The device meant for relieving pressure from the tube space is a jet pump installed in the tube hanger tap. The suction of the jet pump is connected with the nozzle to the casing head cavity and to the annular space between the production casing and the flow column. The assembly for separate throttling of water and gas and for warming the flow being pumped is installed on the nozzle before the jet pump suction.

EFFECT: providing gas extraction and pressure relief from the tube space; when the flow is warmed, reliability of the wellhead equipment is increased.

1 dwg, 2 cl

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting oil-gas fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station connected to a central control unit, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a power functional hydropneumatic accumulator, linked through an actuating medium, mainly in form of liquid, with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of an oil-gas field, reduced cost of extracting formation fluid, easier control of processes due to automated control of well shutting-off devices.

24 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting gas fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a power functional hydropneumatic accumulator, linked through an actuating medium with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then, with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of a gas field, reduced cost of extracting gas, easier control of processes due to automated control of well shutting-off devices.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of gas-condensate fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of wells, which are part of a gas-condensate well pad. The well pad comprises at least two gas-condensate wells, each of which contains a production casing with a flow column with underground production equipment, containing at least a remote controlled safety valve with an actuating mechanism, wellhead with wellhead equipment, with a casing head and a tubing head on which is mounted an X-mas tree with shutting-off devices - casing and wing valves with actuating mechanisms, as well as a throttle valve adjacent to the latter with an actuating mechanism, and monitoring and control devices - a fuse link and a low- and high-pressure control valve. Each well is connected to a control station through its shutting-off devices, throttle valve and safety valve, where the control station comprises a common pump-accumulator unit and at least one control unit for each well. The pump-accumulator unit comprises a group of pumps and a high-pressure power functional hydropneumatic accumulator, connected to it through actuating medium of a high-pressure line. Each control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve, safety valve for each well, supplied by the said high-pressure line, through pressure regulators, and can control their operation through a time-stepped system for delaying command transmission for at least shutting off each well in the logical sequence: "wing valve - casing valve - safety valve" - logical control line, linked to the fuse link and the low- and high-pressure control valve and fitted with hydraulic distribution valves, with possibility of backing up command transmission for shutting off each well. One of these valves can transmit a well shut-off command to the logical control line from the fuse link, the other - from the low- and high-pressure control valve, and at least two others - from remote and manual control respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line with power lines for functional control of actuating mechanisms of the casing valve and safety valve. The delay mechanisms comprise a control hydropneumatic accumulator and a throttle, which provide for shutting off each well at different times. The power line for functional control of the actuating mechanism of the safety valve of each well is provided with at least one pressure booster, which interacts with a reducing pressure regulator, which provides for values which, when multiplied with the transmission ratio of the booster, provide for operating pressure at the output, required for operation of the actuating mechanism of the safety valve.

EFFECT: more reliable and accident-free operation of a well, which is part of a gas-condensate well pad and much easier control of processes.

17 cl, 3 dwg, 1 ex

Gas well pad // 2367787

FIELD: gas-and-oil production.

SUBSTANCE: invention relates to exploitation of gas fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of wells, which are part of a gas well pad. The well pad comprises at least two gas wells, each of which contains a production casing with a flow column with underground production equipment, containing at least a remote controlled safety valve, wellhead with wellhead equipment, with a casing head and a tubing head, an X-mas tree with casing and wing valves, as well as a throttle valve adjacent to the latter with an actuating mechanism, and monitoring and control devices - a fuse link and a low- and high-pressure control valve. Each well is connected to a control station through its shutting-off devices, throttle valve and safety valve, where the control station comprises a common pump-accumulator unit and at least one control unit for each well. The pump-accumulator unit comprises a group of pumps and a high-pressure power functional hydropneumatic accumulator, connected to it through actuating medium of a high-pressure line. Each control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve, safety valve for each well, supplied by the said high-pressure line, through pressure regulators, and can control their operation through a time-stepped system for delaying command transmission for at least shutting off each well in the logical sequence: wing valve - casing valve - safety valve - logical control line, linked to the fuse link and the low- and high-pressure control valve and fitted with hydraulic distribution valves, with possibility of backing up command transmission for shutting off each well. One of these valves can transmit a well shut-off command to the logical control line from the fuse link, the other - from the low- and high-pressure control valve, and at least two others - from remote and manual control respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line with power lines for functional control of actuating mechanisms of the casing valve and cut off device. The delay mechanisms comprise a control hydropneumatic accumulator and a throttle, which provide for shutting off each well at different times.

EFFECT: more reliable and accident-free operation of a well, which is part of the gas well pad, reduced cost of extracting gas and much easier control of processes.

17 cl, 3 dwg

Oil well // 2367786

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of oil fields, and can be particularly used for remote, automatic and manual control of actuating mechanisms of well shutting-off devices. The well has a production casing with a flow column with underground production equipment, containing at least a circulating valve, shear valve, non-freezing check valve and, if necessary, a separating device, meant for separating oil and water. There is also a remote controlled device for cutting off flow of oil, which has an actuating mechanism, a wellhead with wellhead equipment, with a casing head, a tubing head, on which an X-mas tree is mounted, which includes shutting-off devices - casing and wing valves with actuating mechanisms, as well as a throttle valve adjacent to the latter, which regulates well flow rate and has an actuating mechanism, and monitoring and control devices - a fuse link and a low- and high-pressure control valve. The well is connected to a station for controlling shutting-off devices, throttle valve and cut off device, which comprises a pump-accumulator unit and at least one control unit per well. The pump-accumulator unit comprises a group of pumps and a high-pressure power functional hydropneumatic accumulator, connected to it through actuating medium of a high-pressure line. The control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve and cut off device, where the said power lines are supplied by the said high-pressure line through pressure regulators, which reduce functional pressure to the required value. There is also a logical control line, which controls operation of actuating mechanisms through a time-stepped system for delaying command transmission for at least shutting-off the well in the logical sequence: wing valve - casing valve - cut off device. This line is connected to the fuse link and low- and high-pressure control valve and is fitted with hydraulic distribution valves with possibility of backing up command transmission for well shutting off. One of these valves can transmit a well shut-off command to the logical control line from the fuse link, the other - from the low- and high-pressure control valve, and at least two others - from remote and manual control respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line with power lines for functional control of actuating mechanisms of the casing valve and cut off device. The delay mechanisms comprise a control hydropneumatic accumulator and a throttle, which provide for well shut-off at different times. The power line for functional control of the actuating mechanism of the throttle valves is provided with a three-position distribution valve, preferably with two electromagnets.

EFFECT: more reliable and accident-free operation of an oil well, reduced cost of oil extraction and much easier control of processes.

16 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting oil fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a power hydropneumatic accumulator, linked through an actuating medium with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of an oil field, reduced cost of extracting oil, easier control of processes due to automated control of well shutting-off devices.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting gas-condensate fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a modular-sectional power functional hydropneumatic accumulator, linked through an actuating medium with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of a gas-condensate field, reduced cost and easier control of gas-condensate extraction processes.

25 cl, 3 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

FIELD: oil and gas extractive industry.

SUBSTANCE: foam-forming compound for shutting wells contains hydrocarbon liquid, mixture of surfactants, one of components thereof is water solution of lignosulphonate reagent of 25% concentration, herbal filling agent and 20% water solution of calcium chloride, as lignosulphonate agent reagent it contains powder-like technical lignosulphonate, and as other component of surfactant mixture - hexamethylentetramine, and as herbal filling agent - peat or grass flour with following ratio of components in percents of mass: hydrocarbon liquid 12-14, said water solution of technical powder-like lignosulphonate 17-21, hexamethylentetramine 0.17-0.63, peat or grass flour 3-6, said calcium chloride solution - the rest, while relation of mass portions between said water solution of technical powder-like lignosulphonate and hexamethylentetramine is 1: 0.01-0.03 respectively, as grass flour it contains pulverized herbal waste of grain bread production or similar substance.

EFFECT: higher efficiency.

2 cl, 18 ex, 1 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: compound includes water and inhibiting salt, as inhibiting salt contains processed electrolyte - side product during production of magnesium via electrolysis from carnallite, and additionally as reducer of filtering and thickener - carbooximethylcellulose polymer, and as colmatation agent - magnesium oxide with following relation of components in percents of mass: processed electrolyte - side product of magnesium production via electrolysis from carnallite 10.0-15.0, carbooximethylcellulose 2.5-3.0; magnesium oxide 1.0-2.0, water 80.0-86.5.

EFFECT: higher efficiency.

3 tbl

FIELD: oil and gas producing industry, in particular composition for killing of well.

SUBSTANCE: claimed polysaccharide gel contains sweet or mineralized water, polysaccharide gelling agent, boron cross-linking agent, diethanolamine, quaternary ammonium compounds, and mixture of non-ionic and anionic surfactant (complex surfactant). Mixture of water soluble oxyethilated alkylphenols and their sulphoethoxylates in form of sodium salts or salts with triethanolamine is used as complex surfactant in amount of 0.1-0.5 kg on 1000 l of water being the gel base. Polysaccharide gel is obtained by dissolution and hydration of polysaccharide gelling agent in sweet or mineralized water (preferably monovalent ion solution) followed by treatment of obtained polysaccharide solution with aqueous solution including boron cross-linking agent, diethanolamine, quaternary ammonium compounds, and complex surfactant.

EFFECT: well killing composition of improved quality.

2 cl, 6 ex, 1 tbl

FIELD: oil extractive industry.

SUBSTANCE: method includes mounting compressor pump in such a way, that input aperture of tail piece was positioned below bed sole. Prior to that water cone in face-adjacent zone is destroyed by draining water through tail piece, connected to lower suck-in valve of compressor pump cylinder, and along behind-pipe space through side suck-in valve of compressor pump cylinder. In case of increase of hydrocarbon contained in drained liquid beginning of water cone destruction is assumed. Draining is continued until destruction of emulsion in water cone, formed in non-homogenous porous environment of bed at limits of hydrocarbon-water and water-hydrocarbon, separation of water and hydrocarbon streams and bringing current water-hydrocarbon contact to initial position. Then during extraction water is drained through tail piece, and hydrocarbon - along behind-pipe space.

EFFECT: higher yield.

3 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes preparation of technological liquid - water solution of sylvinite ore mixture with chlorine calcium by solving a mixture of components in hot fresh technical water, drained from oil and water preparation plants or bed water. During solution of sylvinite ore mixture with chlorine calcium in bed water the latter is drained from the well at temperature 60-90°C. Technological liquid is produced with solution density 1.23-1.37 t/m3. Then prepared technological liquid is fed into well shaft a bit lower, oppositely to zone and above ceiling of productive bed with forming of hydraulic column above the latter. Then well shaft to the mouth is filled with water. Value of technological liquid hydraulic column of high density on basis of said mixture, fed into well shaft above ceiling of productive column of technological liquid is taken in amount, necessary and enough from well stopping conditions.

EFFECT: higher efficiency.

6 cl, 1 ex

FIELD: oil and gas production.

SUBSTANCE: water-based composition that can be used for killing of well during pullout of hole and well remedial work as well as for temporary abandonment of well contains, wt %: carboxymethylcellulose3.5-4.5, sodium hydroxide1.5-2.0, copper sulfate 0.3-0.4, and methanol 4.0-16.0.

EFFECT: improved rheological properties of composition and increased lifetime of formed gels.

1 tbl

FIELD: oil and gas industry.

SUBSTANCE: method includes serial pumping into well of buffer, blocking and pressing liquid, blocking liquid contains hydrocarbon base, acyclic acid, caustic soda and mineral filler with following relation of components in percents of mass: hydrocarbon base 41-72, acyclic acid 6.1-14.4, caustic soda 4.9-13.0, mineral filler the rest. Hydrocarbon base of blocking liquid is oil or oil processing products. As mineral filler blocking liquid has calcium carbonate with diameter of particles no less than 2 micrometers.

EFFECT: higher efficiency, simplified maintenance, simplified construction.

3 cl, 1 ex

FIELD: oil industry.

SUBSTANCE: at least one acoustic dynamic is mounted immediately on product pipe in oil well and acoustic characteristic of flowing environment flow is determined in product pipe. It is sent into surface controller, using product pipe. Using surface controller flowing substance flowing mode is determined, on basis of which working parameters of oil well are adjusted. Working parameters of oil well can be adjusted to detect Taylor mode of flow. For adjustment of working parameters throttle is used and/or controlled valve of oil well, controlling amount of gas, forces into product pipe. For determining mode of flow of flowing environment artificial neuron net can be used. It is possible is provide energy for acoustic sensor through product pipe. It is possible to determine additional physical characteristics of flowing substance, for example pressure and temperature.

EFFECT: higher efficiency.

3 cl, 22 dwg

FIELD: mining industry.

SUBSTANCE: system has first induction throttle, second induction throttle and controlled switch. Second induction throttle is positioned near second branch of pipeline structure. Controlled switch has two outputs. First switch output is electrically connected to pipeline structure on the side of induction throttles connection, where first and second branches of pipeline structure intersect. Second output of switch is electrically connected to pipeline structure on other side of at least one induction throttle. Pipeline structure can be positioned inside oil well, and can have casing string and operation tubing column. Also described is method for extracting oil products from oil well using said system.

EFFECT: higher efficiency.

4 cl, 10 dwg

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