Facility and method for generating pressure pulses in drilling agent, instrument for borehole measurements at drilling in drilling agent and centralisers for said facilities

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil producing industry and is designed for generating pressure pulses in drilling agent in drill string and for measurements during drilling. For this purpose the bell of the pulse generator travels up and down to shift drilling agent from pressure reservoir into a chamber of sliding pressure and out of it and along corresponding upper and lower connecting channels. The bell is actuated by means of certain sequence of manipulations performed with solenoids with a bidirectional disk valve. The circular channel of the pulse generator is designed to decrease turbulence of drilling agent flow and to generate practically laminar flow in a pulsation region. A pulse or absence of a pulse is converted into a digit signal transmitted to surface with a pressure sensor implementing algorithm of decoding. Further a signal is visualised by a drill foreman and operators who obtain valid data about direction and geologic formation; these data assist an operator in determining direction of drilling. Additional pulse generators increasing rate of data transmitting can be introduced in the given instrument. Raised velocity of data transmitting facilitates obtaining more thorough information, decreases drilling expenditures and increases yield of oil deposit.

EFFECT: raised information value and reliability of methods and facilities due to insensitivity of facility to flow velocity and pressure; skipping over adjustment during operation; forming recognisable, repeated, reproducible and pure signals of pressure pulses at minimal consumption of power.

37 cl, 4 dwg

 

The present invention relates to a device and method for generating pressure pulses in the drilling mud.

In the present technology is applied, the generator may be sensitive to different discharge pressures in the well and the flow rates and require adjustment in operating conditions for the formation of the correct ripple, allowing reception programmable controller meaningful signal from the generated pulses.

U.S. patent No. 5473579 describes the pulse generator, which uses a servo valve and a spring acting jointly and inducing signal valve for axial movement within the drill, and signal support is counterbalanced by an expansion joint.

U.S. patent No. 5117398 describes the pulse generator, which uses tabs that are opened by electromagnetic means which mechanically hold the valve in the closed or open position, not allowing him to move before receiving the signal, after which the latches are opened electronically.

U.S. patent No. 6002643 describes the pulse generator, in which a bidirectional solenoid includes first and second windings and passing inside winding stem is used to bring into action Poppet valve, creating a bidirectional pulse pressure. Used is TVersity allow the impact on the flow of drilling mud from the side of the piston mechanism, located in the main body of the pulse generator, and the membrane switch allows the electronic part of the control unit to influence the pulse generator.

U.S. patent No. 4742498 describes the pulse generator containing a piston which is exposed to the drilling fluid and can be moved into a closed and open position by means of springs and bidirectional solenoid.

U.S. patent No. 6016288 discloses a pulse generator with a servo, managing lead screw, which rotates and thereby provides translational movement of the valve block. All elements, except for the lead screw, located in a sealed compartment and not in contact with mud.

U.S. patent No. 5802011 describes a device with a solenoid actuator, rotary valve, which is included in the circular flow of the mud and out of him, blocking, passing the stream.

U.S. patent No. 5103430 describes the dual-chamber pulse generator forming a hydraulic chamber above and below the Poppet valve servo. The differential pressure is determined through a third camera on either side of the Poppet valve, and the actuator is inspired to move Poppet valve to stabilize the pressure.

U.S. patent No. 5901113 describes a tool for downhole metering the deposits in the drilling process, in which to identify geological formations uses the inverse of the seismic profile. Near the drilling crowns placed the seismic signal generator generates a known signal subjected to the influence of geological formations, and then read by a group of receivers.

U.S. patent No. 6583621 describes the magnetic resonance device, containing a set of permanent magnets located inside the drill string, creates a magnetic flux to the transmit antennas are processed on the surface.

U.S. patent No. 5517464 describes the pulse generator, which uses: turbine, which is driven by the movement of the drilling fluid, and drive the rotor in rotation creates pressure pulses.

U.S. patent No. 5467832 describes a method of generating a directed electromagnetic or acoustic vibrations in the well, which can be read on the surface, using the generated pressure pulses.

U.S. patent No. 5461230 describes a method and equipment for providing temperature compensation in the gamma detectors devices for downhole measurements while drilling.

U.S. patent No. 5402068 describes the signal generator to which sequentially apply power with the purpose of generating a known electromagnetic signal interacts with credo is. Changes to this known signal is interpreted as geological data, subject to appropriate action.

U.S. patent No. 5250806 describes a device where the gamma detectors placed outside the device for downhole measurements while drilling, to their physical location was closer to heavy-weight drill pipe, which helps to minimize distortion of the signal.

U.S. patent No. 5804820 describes the high-energy neutron accelerator used for the irradiation of the surrounding formations, the readings of which are read gamma detectors and processed various statistical interpretation methods.

U.S. patent No. 6057784 describes the module to the downhole measurement while drilling, placed between the motor of the drill and the drill crown, resulting in the device is closer to the drill crown and provides a more accurate geological data.

U.S. patent No. 6220371 B1 describes a group of downhole sensors, systematically taking samples of material (mud) in heavy-weight drill pipe and store the data in electronic form for later retrieval and interpretation. These data can be transmitted in real time via telemetry or other means of communication.

U.S. patent No. 6300624 describes a stationary detector that determines AZ the Mut by radiation detection, based on the position detector.

U.S. patent No. 5134285 describes a tool for downhole measurements while drilling, containing special longitudinally oriented gamma-ray detectors and gamma-ray source.

The patent application U.S. No. 2004/0089475 A1 describes a device for downhole measurements while drilling with a Central cavity that allows the drilling tool to rotate inside the device attached to a heavy-weight drill pipe. The lack of coupling between the device and the drill tool provides the area of the minimum vibration, improving the reading.

U.S. patent No. 6714138 B1 describes a pulse generator, which uses rotor blades, consistently move so as to restrict the flow of drilling fluid forming the pressure pulses of known amplitude and duration.

Patent of great Britain No. 2157345 And describes telemetry generator pressure pulses in the mud column that uses a solenoid, which provides the reciprocating movement of the needle valve restricting the flow of drilling mud in heavy-weight drill pipe, and thereby generating a pressure pulse.

International patent application WO 2004/044369 A2 describes a method for determining the presence of oil and water in different is cnyh concentrations and control the direction of drilling so to maintain the desired amount of oil and water in the drill string by measuring the hydrostatic pressure. Set the base value of the hydrostatic pressure, and then the set value of the pressure count, measure and control.

International publication WO 00/57211 describes a method of detecting gamma radiation, which includes the use of four probes, gamma logging, monitoring gamma radiation from four clearly separated regions surrounding the well.

Publication of European patent application No. 0681090 A2 describes the turbine and the rotor is able to restrict and permit the flow of fluid in the borehole, generating through this pressure pulses.

In the European patent 0781422 B1 describes the use of three neutron accelerators and three detectors that are sensitive to specific items, as well as a recording device for recording the indications of the three detectors.

The aim of the present invention is a method and device for creating pressure pulses in the drilling mud flowing through the drill string, which eliminates the disadvantages of the known methods and devices.

According to the present invention a device for creating pressure pulses in the drilling mud flowing through the drill string, and a device for downhole and the measurements during the drilling mud, containing the pulse generator, located longitudinally in the annular channel heavy-weight drill pipe, having upper, middle and lower channels and containing a bell, the guide arm is designed to move along the rim of the bell and having an average inner channel, the lower inner channel generator, the upper connecting channels of the generator provided with a medium internal channel of the rod, and the lower connecting channels of the generator, in communication with the lower interior channel of the generator and the lower annular channel heavy-weight drill pipe so that the drilling fluid flows through the annular channel heavy-weight drill pipe and sent via the specified connection channels, while the annular channel weighted drill pipe provides for the formation of stable, close to laminar, flow of drilling fluid to create a bell generator reproducible pulses to transmit signals.

The device may contain a Poppet valve having a seat and bellows, the camera moving pressure formed between the bell and the guide rod of the generator and communicated by means of the upper connecting channels of the generator with a medium internal channel of the guide rod, with the upper and lower connecting channels capable of providing reverse the od of the thread and the disc valve hermetically separates the average inner channel of the guide rod from the bottom of the inner channel of the generator so that the bell and the disc valve capable of moving along the axis along the guide rod in two directions.

The device may comprise at least one solenoid that provides the trajectory of the Poppet valve and the bells of the pulse generator in accordance with bidirectional axial movement.

The device may contain at least two solenoid selectively incorporated by the power source, generating an electric current, and a programmable controller.

The device may contain a Poppet valve having a seat and bellows at the top of the connecting channel has an outlet located in the rear during the end above the Poppet valve, and the lower connecting channel has an outlet located in the front during the late under Poppet valve and bellows Poppet valve, and a camera moving pressure formed between the bell and the guide rod of the generator and communicated by means of the upper connecting channels of the generator with a medium internal channel of the guide rod, with the upper connecting channels are directed upward relative activities is but the stream of drilling fluid, the bottom of the connecting channels is directed downward in the direction of flow of the drilling fluid and are angled to facilitate withdrawal of the flow of drilling mud to the front along the lower end of the annular channel heavy-weight drill pipe.

The bottom of the connecting channels of the generator can set the equilibrium pressure, while the pressure below the pressure in the middle of the inner channel of the guide rod.

The device can be configured so that the pressure required to overcome the clutch or brake disc valve is a pressure difference in the throttle zone formed between the lower inner channel of the generator and the average internal channel of the guide rod.

The device can be configured so that the difference of these pressures is the minimum, and a small force acting on the valve seat with a small cross-section, defines the specified minimum pressure required for clutch or brake disc valve.

Upper, middle and lower annular channels heavy-weight drill pipe can restrict flow, sufficient to reduce the turbulence of the flow of drilling mud through these annular channels.

The bell of the pulse generator can be moved up or down along the guide rods for limited what I or passing the stream through the middle annular channel heavy-weight drill pipe in the generation of the pulse.

The device may contain a means of coupling to retrieve it from heavy-weight drill pipe.

According to the invention created centralizer concentric wrapping attached inside the heavy-weight drill pipe, to the pulse generator or device for downhole measurements, through which it flows, the drilling fluid containing device concentric design, designed for longitudinal fixing of the pulse generator or the device specified in the heavy-weight drill pipe.

The centralizer may have annular channels for unlimited flow of drilling mud.

The centralizer may be made of hard, non-magnetic, wear-resistant material and is intended for mounting the heavy-weight drill pipes of various sizes and diameters.

According to the invention created a way to create pressure pulses in the drilling mud flowing through the drill string, containing the following steps:

the inclusion in the original first position of the first lower solenoid, initially without closing the disc valve at the bottom of the inner channel of the pulse generator and holding the disc valve at the specified position using the minimum current;

off in the second position of the first lower solenoid and the inclusion of the second upper solenoid, moving the himself the m disc valve in closed position, hermetically separating the lower inner channel of the pulse generator from the middle of the inner channel of the guide rod generator and providing the internal passage of the flow of drilling fluid through a pair of upper connecting channels of the generator, which leads to the displacement of the bell of the generator up to the middle of the ring channel heavy-weight drill pipe and stop without reaching the closed position, creating a restriction of flow and positive pressure pulse;

simultaneous passage of drilling fluid into the lower group of the connecting channels of the pulse generator, reducing the pressure drop along the valve seat, resulting to hold the Poppet valve in the closed position requires a minimum effort;

moving the Poppet valve back to its original first position, passing the drilling fluid through the valve seat and providing its course to the group of lower connecting channels of the pulse generator is connected to the bottom of the inner channel of the generator, providing the movement of the bell of the generator in the direction of flow of the drilling fluid;

the pressure drop in the chamber moving the pressure pulse generator during the flow of solution through the group of the upper connecting channels of the generator and the reduction chamber;

the flow of the medium kolicevo what about the channel heavy-weight drill pipe in the lower annular channel heavy-weight drill pipe, forming a negative pressure pulse, and moving the bell of the pulse generator down in the direction of flow of the drilling fluid until it stops.

The restriction of flow may cause a pressure differential builds up momentum recognized on the surface.

These pulses can contain minor interference or do not contain interference in the signal-to-noise ratio, and the pulses have a very high reproducibility. The formation of these pulses occurs with minimal power costs, so that the solenoids can be switched on for longer periods.

From the above it is clear that the present invention relates to a device and method for generating pressure pulses in the mud created by the selective actuation of the solenoids, causing the bidirectional pulses generated by the flow. One of the features of the invention is that the bell of the pulse generator operates in the annular channel heavy-weight drill pipe, allowing the reduction of the turbulent flow of drilling fluid in the device for downhole measurements while drilling, providing reproducible pressure pulses that are converted to signals with a relatively low noise level. Then the pulse is taken "on the surface" in a sequence of whitefish is Alov, representing the changes in pressure that professionals working in the oil field can be interpreted as the intensity of the gamma radiation, azimuth and other values, to understand how to increase production.

Additional advantages of the device according to the present invention are that it is insensitive to flow rate and pressure, does not require adjustment in operating conditions and is able to form recognizable, repeatable, reproducible, clean (i.e. not containing noise) signals of pulse pressure with minimal energy consumption due to the unique design of the bell of the generator and the bottom of the inner channel, which also eliminates the need for pre-drilling and the constant presence of a specialist at the wellsite, as well as losses from downtime. The annular channel has a construction such that the flow in the field ripple is almost laminar, which provides frequent pulse, with virtually no interference, and the result is free from interference signals. It is easy to introduce additional pulse generator with variable amplitude pressure, enabling exponential growth rate of the transmission data sent to the surface. It also provides the ability to install additional downhole sensors without loss of resolution is osobnosti.

The following is a more detailed description of the invention with reference to the accompanying drawings.

figa depicts a cropped top view in section of the bells generator device for downhole measurements while drilling according to the present invention, illustrating the essential elements of the device.

Figw - continued figd illustrating the elements of the device, below the bell of the generator.

Figs - continued figv illustrating additional elements used in the device for measurement while drilling, and rigid centralizer, required for a system according to the invention.

Figure 2 - combination figa, figv and pigs.

On figa depicted ring heavy-weight drill pipe 29 having an annular channel, consisting of upper, middle and lower annular channels 2, 12, 18. Guide tube 30 is fixed inside a heavy-weight drill pipe 29.

The fishing head 1 and the vibrating sieve 3 contain radially aligned grooves 4, screw the filter 5 and the inner tank 6 screw filter.

A device for generating pressure pulses in drilling fluid contains located in the annular channel of the pipe 29, the pulse generator containing a bell 17, the guide rod 28, the lower inner channel 21, the upper connecting channels 25 and the lower connecting channels 23. ..... The ha 28 has an average inner channel 8, communicated with the channels 25. The channel 23 is in communication with the channel 21 and channel 18. Drilling fluid from the internal reservoir 6 screw filter may leak into the transition region 7 and in the middle of the inner channel 8 of the guide rod.

The centralizer 36 (figs) secures the lower portion of the pulse generator and is made of non-magnetic, hard, heat-resistant and wear-resistant material and includes outer channels.

The device comprises a Poppet valve 20 with the seat 19 and the bellows 22, the camera 26 of the moving pressure formed between the bell 17 and the guide rod 28 of the generator and communicated by means of the upper connecting channels 25 of the generator with a medium internal channel 8 of the guide rod 28. The disc valve 20 is hermetically separates the average inner channel 8 of the guide rod 28 from the bottom of the inner channel 21 of the generator, so that the bell 17 and the disc valve 20 is able to move around the axis along the guide rod 28, in two directions. The disc valve 20 restricts or allows the flow of drilling mud through the saddle 19 Poppet valve.

The device comprises a front solenoid 33 (pigv) and the rear solenoid 31 selectively incorporated by the power source, generating an electric current, and a programmable controller (not shown) and provides trajectory the movement of the Poppet valve 20 and the bell 17 pulse generator in accordance with bidirectional axial movement.

Front solenoid 33 and the rear solenoid 31 actuate, respectively, the left hub 35 of the stream and the right hub 34 of the flow, the drive shaft 32 and the disc valve 20.

In figure 2, combining figa, figv and figs, showing all of the device for creating pressure pulses in the drilling mud.

The way to create pressure pulses in the drilling fluid, according to the present invention, is performed as follows.

In the first (open) position Poppet valve 20 is not in the grip saddle 19 Poppet valve. When the flow of current through the solenoid 33 of the control means 80 is extended until you are on the same level with the hub 35 of the thread. The drive shaft 32, rigidly connected with the control means 80, moves, pulling the disc valve 20 from its seat 19. In the open position, the solution flows through the fishing head 1 and the vibrating sieve 3, when this part of the solution flows in a radially aligned grooves 4, screw through the filter 5 and the inner tank 6 of the filter. The solution of the inner tank 6 filter flows into the transition area 7 and the average inner channel 8 in the guide rod 28 and the pulse generator.

The solution flows through the upper connecting channels 25, the camera 26 sliding pressure and in the saddle 19 Poppet valve, allowing the Poppet valve 20 OS is be passed under the saddle 19, that provides a flow of solution in the bottom of the inner channel 21, past the bellows 22 Poppet valve and out from the bottom of the connecting channels 23 in the lower annular channel 18 heavy-weight drill pipe. In addition, the solution flows from the chamber 26 of the moving pressure through the upper connecting channels 25 and through the disc valve 20, allowing the bell 17 pulse generator to move downward along the guide rod 28 of the generator, outside of the throttle zone 14 pulse, thereby creating a negative pressure pulse and a corresponding signal.

In the second (closed) position, the solenoid 33 is de-energized, and the solenoid 31 is on, pushing the control means 80 until it aligns with the hub 34 of the thread. In this position the shaft 32 pushes the Poppet valve 20 to its sealing seat 19 of the valve.

The lower inner channel 21 and the lower connecting channels 23 in fact, turn out to be clogged, so that the flow of drilling fluid from the top Poppet valve 20 is fully closed. Upon reaching this seals the drilling fluid continues to flow into the lower inner channel 21 through the lower connecting channel 23, which is almost equalizes the pressure across the Poppet valve 20. Downward flow of drilling fluid through heavy-weight drill pipe 29 passes through the extractor head 1 and vibrac the traditional sieve 3, where part of the solution flows through radially aligned grooves 4 and screw through the filter 5 in the inner tank 6 of the filter. After this, the solution flows into the transition area 7 and flows through the middle of the inner channel 8, through the upper connecting channels 25 and into the chamber 26 of the moving pressure, filling and expanding her, forcing the bell 17 generator to climb the guide rod 28. In the middle of the ring channel 12 heavy-weight drill pipe is separated from the lower annular channel 18, which creates a positive pressure pulse in the throttle zone 14 creating pressure pulses and allows you to send a corresponding signal.

These conditions provide for the creation of a pressure pulse when the bell 17 generator provisions restricting the flow of drilling mud, and provisions that allow the flow of drilling fluid, thereby increasing the generation rate of the pressure pulses in comparison with the known devices for downhole measurements while drilling. The most common devices generate only one pulse in one direction. The device according to the present invention can be placed in heavy-weight drill pipe a few bells pulse generator that generates pulses that provides an exponential increase in the number the of Ignatov, enables the definition of geological data, allowing to increase the efficiency of oil drilling.

The placement of the pulse generator within the heavy-weight drill pipe 29 and application guide tube 30 substantially reduces the turbulence of the flow solution. Nominal hydrodynamic force of the flow required to move the Poppet valve 20 in the saddle 19 or out of it, is about 3.5 pounds. The estimated useful power consumption required for holding the Poppet valve 20 for most locations, is about 20 ohms. Linear movement of the bell 17 of the generator along the guide rod 28 is carried out and up and down (along the axis in both directions).

Conventional pulse generators require adjustment to ensure pulsation at the different characteristics of the discharge pressure and the pressure in the borehole and different flow velocities. Signal obtained by conventional technologies, created by the pulse received at the surface by using a pressure sensor capable of differentiating the pressure pulses generated in the borehole). Then these superficial impulses are converted into useful signals, which gives the operator information about the intensity of gamma radiation, azimuth, etc. Another advantage of the device according infusion is his invention is the ability to produce clean (interference-free) pulse signal regardless of flow rate or pressure within the heavy-weight drill pipe. Therefore, the device according to the present invention allows to generate pulses of variable amplitude (pressure)transmitted to the surface with speeds substantially in excess of 6 bits/s, by applying an additional pulse generator and varying the restriction of the flow generated by the movement of the bell of the generator. The use of more than one pulse generator leads to the exponential increase in data transfer rate, taken on the surface.

The connecting channels allow you to equalize the pressure or, at least, to reach nearly or completely equilibrium pressure across the Poppet valve. The change in the initial pressure occurs between the middle and lower inner channels, providing the pressure drop created by the bell of the generator, limiting the annular flow through the throttle area. This is the minimum pressure drop across the Poppet valve is the only force acting per unit area that must be overcome for clutch or brake disc valve and create momentum. This minimum pressure drop in the area of the smallest cross-section Poppet valve ensures that the impulse formation will require only a little effort.

Although the present izaberete what s been described with reference to a specific example of a variant implementation, it is obvious that it can be made various modifications and changes without derogating from the idea and scope of the invention in their broader sense, according to the information set forth in the attached claims. The drawings and description should be considered illustrative, and not as a constraint.

1. Device for creating pressure pulses in the drilling mud flowing through the drill string containing the pulse generator, located longitudinally in the annular channel heavy-weight drill pipe, having upper, middle and lower channels, and containing a bell, the guide arm is designed to move along the rim of the bell and having an average inner channel, the lower inner channel generator, the upper connecting channels of the generator provided with a medium internal channel of the rod, and the lower connecting channels of the generator, in communication with the internal channel of the generator and the lower annular channel heavy-weight drill pipe so that the drilling fluid flows through the annular channel weighted drill pipe and sent via the specified connection channels, while the annular channel heavy-weight drill pipe provides for the formation of stable, close to laminar, flow of drilling fluid to create kolokolo the generator of reproduced pulses to transmit signals.

2. The device according to claim 1, containing a Poppet valve having a seat and bellows, the camera moving pressure formed between the bell and the guide rod of the generator and communicated through the top and bottom of the connecting channels of the generator with a medium internal channel of the guide rod, with the upper and lower connecting channels capable of providing reverse flow, and the disc valve hermetically separates the average inner channel of the guide rod from the bottom of the inner channel of the generator so that the bell and the disc valve capable of moving along the axis along the guide rod in two directions.

3. The device according to claim 1, containing at least one solenoid that provides the trajectory of the Poppet valve and the bells of the pulse generator in accordance with the bidirectional axial movement.

4. The device according to claim 3, containing at least two solenoid selectively incorporated by the power source, generating an electric current, and a programmable controller.

5. The device according to claim 1, containing a Poppet valve having a seat and bellows at the top of the connecting channel has an outlet located in the rear during the end above the Poppet valve, and the lower connecting channel has a discharge from Artie, located on the front during the late under Poppet valve and bellows Poppet valve, and a camera moving pressure formed between the bell of the generator and of the guide rod and communicated by means of the upper connecting channels of the generator with a medium internal channel of the guide rod, with the upper connecting channels are directed upward relative to the flow of drilling mud, the bottom of the connecting channels is directed downward in the direction of flow of the drilling fluid and are angled to facilitate withdrawal of the flow of drilling mud to the front along the lower end of the annular channel heavy-weight drill pipe.

6. The device according to claim 1, in which the lower connecting channels of the generator is able to establish an equilibrium pressure, while the pressure below the pressure in the middle of the inner channel of the guide rod.

7. The device according to claim 6, are made so that the pressure required to overcome the clutch or brake disc valve is a pressure difference in the throttle zone formed between the lower inner channel of the generator and the average internal channel of the guide rod.

8. The device according to claim 7, made so that the difference between these pressures is the minimum, and a small force acting on the valve seat with the small cross-section, defines the specified minimum pressure required for clutch or brake disc valve.

9. The device according to claim 7, in which the upper, middle and lower annular channels heavy-weight drill pipe adapted to provide a flow restriction sufficient to reduce the turbulence of the flow of drilling mud through these annular channels.

10. The device according to claim 7, in which the bell of the pulse generator is able to move up or down along the guide rod to limit or bandwidth flow through the middle annular channel heavy-weight drill pipe in the generation of the pulse.

11. The device according to claim 10, containing the clutch means to extract it from heavy-weight drill pipe.

12. The centralizer concentric wrapping attached inside the heavy-weight drill pipe, to the pulse generator, through which flows the drilling fluid containing device concentric design, designed for longitudinal fixing of the pulse generator in heavy-weight drill pipe.

13. A centralizer according to item 12, having an annular channel for unlimited flow of drilling mud.

14. A centralizer according to item 12, made of hard, non-magnetic, wear-resistant material.

15. A centralizer according to item 12, which is designed to capture the heavy-weight drill pipe once the ranks of sizes and diameters.

16. The way to create pressure pulses in the drilling mud flowing through the drill string, containing the following steps:
the inclusion in the original first position of the first lower solenoid, initially without closing the disc valve at the bottom of the inner channel of the pulse generator and holding the disc valve at the specified position using the minimum current;
off in the second position of the first lower solenoid and the inclusion of the second upper solenoid, thereby moving the disc valve in closed position, hermetically separating the lower inner channel from the middle of the inner channel of the guide rod generator and providing the internal passage of the flow of drilling fluid through a pair of upper connecting channels of the generator, which leads to the displacement of the bell of the generator up to the middle of the ring channel heavy-weight drill pipe and stop without reaching the closed position, creating a restriction of flow and positive pressure pulse;
simultaneous passage of drilling fluid into the lower group of the connecting channels of the pulse generator, reducing the pressure drop along the valve seat, resulting to hold the Poppet valve in the closed position requires a minimum effort;
moving the Poppet valve back into the original lane the second position, flowing drilling fluid through the valve seat and providing its course to the group of lower connecting channels of the pulse generator is connected to the bottom of the inner channel of the generator, providing the movement of the bell of the generator in the direction of flow of the drilling fluid;
the pressure drop in the chamber of sliding pressure during the flow of solution through the group of the upper connecting channels of the generator and the reduction chamber;
the flow of the medium in the annular channel heavy-weight drill pipe in the lower annular channel heavy-weight drill pipe, forming a negative pressure pulse, and moving the bell of the pulse generator down in the direction of flow of the drilling fluid until it stops.

17. The method according to clause 16, in which the flow restriction causes a pressure drop, creating a momentum that is recognized on the surface.

18. The method according to clause 16, in which the pulses contain minor interference or do not contain interference in the signal-to-noise ratio, and the pulses have a very high reproducibility.

19. The method according to p, in which the formation of these pulses occurs with minimal power costs, so that the solenoids can be switched on for longer periods.

20. Device for downhole measurements while drilling mud, proteous the m in the drill string, containing the pulse generator, located longitudinally in the annular channel heavy-weight drill pipe, having upper, middle and lower channels, and containing a bell and the guide arm is designed to move along the rim of the bell and having an average inner channel, the lower inner channel generator, the upper connecting channels of the generator provided with a medium internal channel of the rod, the bottom of the connecting channels of the generator, in communication with the internal channel of the generator and the lower annular channel heavy-weight drill pipe so that the drilling fluid flows through the annular channel heavy-weight drill pipe and sent via the specified connection channels, while the annular channel heavy-weight drill the tube allows for the formation of stable, close to laminar, flow of drilling fluid to create a bell generator reproducible pulses to transmit signals.

21. The device according to claim 20, containing a Poppet valve having a seat and bellows, the camera moving pressure formed between the bell and the guide rod of the generator and communicated by means of the upper connecting channels of the generator with a medium internal channel of the guide rod, with the upper and lower connecting channels capable of providing reverse x is d thread and the disc valve hermetically separates the average inner channel of the guide rod from the bottom of the inner channel of the generator so that the bell and the disc valve capable of moving along the axis along the guide rod in two directions.

22. The device according to item 21, containing at least one solenoid that provides the trajectory of the Poppet valve and the bells of the pulse generator in accordance with the bidirectional axial movement.

23. The device according to item 22, containing at least two solenoid selectively incorporated by the power source, generating an electric current, and a programmable controller.

24. The device according to claim 20, containing a Poppet valve having a seat and bellows at the top of the connecting channel has an outlet located in the rear during the end above the Poppet valve, and the lower connecting channel has an outlet located in the front during the late under Poppet valve and bellows Poppet valve, and a camera moving pressure formed between the bell and the guide rod of the generator and communicated by means of the upper connecting channels of the generator with a medium internal channel of the guide rod, with the upper connecting channels sent back the x relative to the flow of drilling fluid, and the bottom of the connecting channels is directed downward in the direction of flow of the drilling fluid and are angled to facilitate withdrawal of the flow of drilling mud to the front along the lower end of the annular channel heavy-weight drill pipe.

25. The device according to claim 20, in which the lower connecting channels of the generator is able to establish an equilibrium pressure, while the pressure below the pressure in the middle of the inner channel of the guide rod.

26. The device according A.25 performed so that the pressure required to overcome the clutch or brake disc valve is a pressure difference in the throttle zone formed between the lower inner channel of the generator and the average internal channel of the guide rod.

27. The device according to p performed so that the difference of these pressures is the minimum, and a small force acting on the valve seat with a small cross-section, defines the specified minimum pressure required for clutch or brake disc valve.

28. The device according to p, in which the upper, middle and lower annular channels heavy-weight drill pipe adapted to provide a flow restriction sufficient to reduce the turbulence of the flow of drilling mud through these annular channels.

29. The device according A.25, which is local pulse generator capable of moving up or down along the guide rod to limit or bandwidth flow through the middle annular channel heavy-weight drill pipe during pulse generation.

30. The centralizer concentric wrapping attached inside the heavy-weight drill pipe, for a device for downhole measurements while drilling, through which the flowing drilling fluid containing device concentric design, designed for longitudinal fixing of the pulse generator in heavy-weight drill pipe.

31. A centralizer according to item 30, having an annular channel for unlimited flow of drilling mud.

32. A centralizer according to item 30, made of hard, non-magnetic, wear-resistant material.

33. The centralizer on p designed to capture the heavy-weight drill pipes of various diameters and sizes.

34. The way to create pressure pulses in the downward flow of drilling fluid drill string device for measurement while drilling, containing the following steps:
the inclusion in the original position of the first lower solenoid initially without closing the disc valve at the bottom of the inner channel of the pulse generator and holding the disc valve at the specified position using the minimum current;
off in the second position of the first lower solenoid and the inclusion of the second upper solenoid, thereby moving the disc valve in closed position, hermetically separating the lower inner channel of the generator from the middle of the inner channel on reviewsa rod generator and providing a flow of drilling fluid through a pair of upper connecting channels, that will move the bell pulse generator up to the middle of the ring channel heavy-weight drill pipe, and stop without reaching the closed position, creating a restriction of flow and positive pressure pulse;
simultaneous passage of drilling fluid into the lower group of the connecting channels of the generator, reducing the pressure drop along the valve seat, resulting to hold the Poppet valve in the closed position requires a minimum effort;
moving the Poppet valve back to the original first position, passing the drilling fluid through the valve seat and providing its course to the group of lower connecting channels of the generator connected to the bottom of the inner channel of the generator, providing a moving bell pulse generator in the direction of flow of the drilling fluid;
the pressure drop in the chamber moving the pressure pulse generator during the flow of solution through the group of the upper connecting channels and the reduction chamber;
the flow of the medium in the annular channel heavy-weight drill pipe in the lower annular channel heavy-weight drill pipe, forming a negative pressure pulse, and moving the bell of the pulse generator down in the direction of flow of the drilling fluid until it stops.

35. The method according to clause 34, to the torus flow restriction causes a pressure drop, creating a momentum that is recognized on the surface.

36. The method according to clause 34, in which the pulses contain minor interference or do not contain interference in the signal-to-noise ratio, and the pulses have a very high reproducibility.

37. The method according to clause 34, in which the formation of these pulses occurs with minimal power costs, so that the solenoids can be switched on for longer periods.



 

Same patents:

FIELD: oil and gas production.

SUBSTANCE: group of inventions relates to oil and gas industry, particularly to field of control of drilling operations. System includes at least one slush pump for delivery of mud from tank for its storage to drilling equipment, pumping main, connected to ability of flowing of liquid with mud and drilling equipment, blowing line, connected to ability of flowing of liquid with drilling equipment and providing for return of mud into tank for mud storage and modulator for mud, connected to ability of liquid flowing at least with one element from group, consisting of pumping main and blowing line.

EFFECT: there is provided automation and effectiveness increase of control of drilling processes.

43 cl, 16 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to geo-physical survey in wells, particularly to analysis and processing of data received from facility of acoustic logging. Method of evaluation of interval time of wave travel in drilling agent consists in evaluating interval time as function of frequency for waves in fluid on base of set of measurements received by means of facility for acoustic logging in borehole; method also consists in evaluation of interval time for drilling agent on base of interval time determined as frequency function for waves in fluid. System for evaluation of interval time for drilling agent consists of a processor and memory, also memory stores a program with commands for determination of interval time as frequency function for waves in fluid on base of the set of measurements received by means of the facility of acoustic logging in a borehole.

EFFECT: upgraded accuracy and information value of acoustic logging by means of selecting waves of various types.

12 cl, 24 dwg

FIELD: well drilling, possible use during transfer of measured face information during drilling through hydraulic communication channel.

SUBSTANCE: device contains cylindrical body with electronic unit for geophysical research, power source unit, power controller and executing mechanism mounted in it, executing mechanism includes spring-loaded locking valve, connecting tubular space of drilling pipes to annular space, upper spring-loaded and lower pilot valves with electromagnet, positioned in hollows filled with liquid. Hollow of lower pilot valve is connected by hydraulic channel to annular space. Hollows of locking valve and upper spring-loaded pilot valve, and hollows of lower pilot valve and hydraulic valve are connected by reverse valves.

EFFECT: increased durability of device.

1 dwg

FIELD: mining industry.

SUBSTANCE: system has setting bushing and well block, having pulse generator, stator and rotor of which have longitudinal channels, holder of rotor relatively to stator, hydraulic turbine and electro-generator, rotor of which is set on same shaft with hydraulic turbine rotor. Body of fixer is connected to upper portion of shaft of pulse generator rotor. Guiding apparatus of hydraulic turbine is made in setting bushing in form of evenly distributed around circle longitudinal grooves, forming same angle with diametric plane, different from 0°. Rotor of hydraulic turbine is provided with longitudinal blades and connected to rotor of pulse generator by friction sleeve, made in form of engaged disks and cylindrical torque spring, by one end connected to pulse generator rotor, and by other end - to lower engagement disk. Upper engagement disk is connected to hydraulic turbine rotor end. Anchor of electromagnetic drive of fixer can have longitudinal hydraulic channels, and in its end working space non-magnetic washer can be mounted.

EFFECT: higher trustworthiness, higher precision, broader functional capabilities.

2 cl, 8 dwg

The invention relates to drilling wells and can be used to control downhole parameters during drilling

FIELD: oil-and-gas industry.

SUBSTANCE: telemetric system sound bottom support includes a bottom sub, an electric module protected jacket and a centraliser. At that the centraliser executed as two co-axial elements with radial connections in between. The centralisers internal element is elongated in comparison with an external one, and in the centralisers internal element top part executed a blind hole along its axis, where an elastic element installed, made of non-magnetic material. The elastic element made of titanium or non-magnetic steel, or bronze, or metal rubber, or rubber.

EFFECT: sound bottom support parts lifetime increase, assembly simplification and its reliability increase, the support spare parts and its assembling work content decrease.

4 cl, 1 dwg

FIELD: metering equipment.

SUBSTANCE: invention is related to survey of underground formations with application of acoustic measurements performed in well. For this purpose body of acoustic logging tool is made as configured for isolation of receiving elements and electronics in acoustic receiver unit against well environment. At the same time body has an interrupted, alternating structure, which acoustically non-transparent in some zones and acoustically transparent in the others. Body may be modular, with several steps joined one to another. Multiple steps provide for the body that may be used with multiple well logging tools for reduction or elimination of noise transfer to receiving elements.

EFFECT: improved efficiency of survey by elimination of interfering signals and provision of adequate mechanical strength of acoustic logging tool.

47 cl, 9 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil industry and can be implemented at survey of wells. The method of evaluation of static and dynamic levels of fluid in annular space of a well equipped with an electric centrifugal pump includes evaluating of levels by geo-physic methods. Prior to evaluation of levels a hole is made in a face plate. A perforated plastic pipe narrowed in its lower part and secured on external surface of a flow string is lowered together with the flow string and the pump into the well. Bottom of the plastic pipe is arranged 0.5-1.0 m above the pump; an upper end of the plastic pipe comes out to surface through the hole in the face plate. A gap between the plastic pipe and the hole of the face plate is leak proofed; a measuring tape with a level sensor is lowered inside the plastic pipe. Surface of fluid is contacted; a level is measured and the measuring tape is withdrawn out of the plastic pipe.

EFFECT: simplification of measuring procedure of fluid level.

FIELD: mining.

SUBSTANCE: invention relates to mining and is provided predominately for subsurface video surveillance, particularly for implementation of visual verification and automated flaw detection of condition of boreholes. Device for video surveillance of well includes sealed outboard unit with video camera and hermetic enclosure, which contains lamp, unit of secondary current supply, remote sensing unit, unit of input and sealing of hoist cable and electric signals converter. Additionally outboard unit additionally contains radiator, linked to environment, heat-conducting container, into which it is placed video camera and coolant, based on the Peltier effect.

EFFECT: providing the ability of video surveillance of boreholes in conditions of elevated temperature.

2 cl, 1 dwg

FIELD: oil industry.

SUBSTANCE: system consists of upper cable plug (UCP) and lower cable plug (LCP) and a body. At that, UCP is provided with cable cords (CC) uniformly located in a circumferential direction and covered with an insulation material, and plugs without being insulated are installed on CC ends. Body is provided with CC uniformly located therein in a circumferential direction, on top ends of which there installed without insulation and located in the body cavity are tips, and with a gasket with holes for CC. At that, LCP is provided with CC covered with insulation material and uniformly located in a circumferential direction and with a flange wherein two holes for mounting elements are made. In UCP and LCP body insulators with holes for CC are located. Seal rings are located in the joints between UCP and the body along the mating cylindrical surfaces. Body and LCP are provided with seal rings located on their external surface, and UCP is provided with a flange with two holes for mounting elements. Body is made in the form of a shell inside which insulators are located with CC uniformly located in a circumferential direction and equipped with limit stops preventing their axial movement. At the shell bottom there made are holes for CC covered with insulation material for LCP and coaxial relative to CC located in the body. Upper part of the shell is made in the form of a hollow cylindrical sleeve coming out of the flange provided with two holes for attaching the mounting elements and coaxial relative to the holes made on UCP flange. Gasket is located in the upper part of the body and locks insulators, and its holes are made for CC covered with insulation material for UCP and are coaxial relative to CC located in the body, on lower ends of which the tips are installed without insulation. Plugs without LCP insulation are installed on CC ends. Tips are collet-type and are provided with spring rings. All joints of tips and plugs with CC ends are threaded.

EFFECT: providing reliability and efficiency of the system for connecting the submersible electric motor to the power cable on the well's top, protected against action of the well's corrosive medium and delivered to the site with maximum availability.

FIELD: oil and gas industry.

SUBSTANCE: invention refers to geo-physical surveys of wells and can be implemented at assembly of well apparatus of telemetry system. The unit consists of an internal threaded bushing and of thrust half-rings. The unit also contains a nut-fairing and a profiled bushing with a flange; on the end of the profiled bushing there are made lugs, while response slots are made on the internal threaded bushing. Also one of the lugs of the profiled bushing is thickened in radial direction, while a module, whereon bushings are assembled, has a slot and a circular groove for the thickened lug; an orienting slot is cut on the flange of the profiled bushing; the response lug entering the orienting slot is made on the end of the second module.

EFFECT: upgraded reliability of assembly modules of telemetric system and improvement of its consumer characteristics.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil industry and can be implemented at operation of oil wells, where depth electric centrifugal pumps are used as cable inlet of high pressure. To achieve the said, the cable inlet is equipped with two sealing packages. One of the packages consists of a complex back-up plate, of a solid cone seal and of a complex packing washer. The second sealing package consists of a complex back-up plate, of a solid cylinder seal and of a complex packing washer. The cable entry with double sealing package is equipped with two bearings installed on each sealing package. A case is equipped with two channels for pressurisation of the cable inlet with double sealing package; the channels are located between sealing packages and are equipped with two plugs installed in these channels.

EFFECT: facilitating control over pressure tightness of cable inlet during operation, simplified installation of cable inlet, also possibility to use cable inlet for existing well stock.

5 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to equipment for well head pressurising and can be implemented at geophysical survey in horizontal wells with excess pressure at well head by means of geo-physical instruments connected to flow string of small diametre and lowered into well on geo-physical cable together with flow string. When instruments and pipes pass through the well head, pressurising is performed by means of a tube preventer and pipe pressurising facilities. When the geo-physical cable passes through the well head, well head pressurising is performed by means of a cable preventer and attached lubricator. Transition from pressurising with one elements of equipment to pressurising with other elements of equipment is carried out using a special three-coupling branch, arranging it so, that closed die-heads of the pipe preventer are located between two lower couplings of the branch, while the upper coupling is located above an upper flange of pipe pressurising facilities.

EFFECT: expanding functionality at performing survey of horizontal wells and increasing reliability of well head pressurising in process of survey.

5 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to well survey and can be used for borehole cable (BC) geophysical instruments (GI) moving-in to boreholes of inclination angle exceeding 50 degrees. Shielding container fixed on the end of drill column (DC) containing number of drill pipes with upper and lower sectors of DC is lowered. GI is lowered on BC into the borehole. Herewith after drilling to preset depth is complete, DC is lifted to the beginning of intensive borehole crookedness. Upper pipe is disassembled, while lower pipe contains mounted lower module with provided GI with packer neck. Upper pipe is mounted on lower module thereafter lowered to preset depth. GI running is performed on one-piece BC. After running is complete, upper module is mounted above upper pipe of DC. Modules are designed as pipes widened to lateral part of casing pipe thus providing free passage for BC between upper pipe of DC and casing pipe. The shielding container represents a magnetic trap of internal boom drift diameter greater than that of DC, and consists of the case. Lower side face of the case contains a magnet, while lower end side includes wash wire guard.

EFFECT: possibility to run GI on one-piece BC without complete rigging-down required.

2 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to directed drilling equipment, namely to measuring equipment retentions in hermetic enclosure of electronic module of downhole device. The offered electronic module of downhole device contains the enclosure cross-armed in electric divider, radiator with upper end face containing electrical connection to generator, dampers between which there is chassis mounted with electronic components and inclinometer sensors peripheral deposition proof, plug fitting hermetically closing the enclosure from below. Herewith the lower damper contains the puller axially moving in rebore of the plug fitting and radial motion proof by pins. Axial position of the puller is regulated by the screw coaxial to the plug fitting in the hole formed wherein. The hole in the plug fitting is stepped with threaded and cylindrical segments. Cylindrical segment of the hole and the screw are sealed from each other with sealing rings. Threaded segment of the screw is of greater diameter, than cylindrical, and on its end face it contains screwdriver slot from the cylindrical segment. The lower and upper dampers are radial motion proof on the chassis by the pin. The plug fitting is provided with collar over which the plug fitting is pressed to the enclosure end face of the electronic module with sleeve nut.

EFFECT: higher efficiency and reliability of measuring equipment performance and higher overall damper performance due to reduced vibrations ensured by axial fix force control of the enclosure chassis.

12 cl, 3 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes selection of cable of required rigidity and fixing devices on it. Transporting of devices into well is performed under effect from weight of cable and devices. Cable also contains inner hermetic pipe, which is plugged on both sides prior to lowering cable into well. Liquid is pumped into pipe under pressure through locking valve in upper plug and is kept in pipe under constant pressure during operation. After that cable is lowered with devices fixed to it. Value of pressure of liquid in pipe is determined from formula Ppipe≥ Pwell(Scable/Spipe-1)-QcablexLcable/Spipe<Ptear, where Ppipe - pressure of fluid in pipe, kg-wt/sm2; Scable - cross-section of cable with pipe, sm2; Pwell - hydrostatic pressure of well liquid column at depth of planned delivery of devices on cable, kg-wt/sm2; Spipe - cross-section area of pipe aperture and plug area equal to it in contact with liquid in pipe, sm; Qcable - weight of 1 km of cable with pipe, kg-wt; Lcable - length of cable to depth of planned delivery of devices, km; Ptear - pressure of liquid in pipe leading to tear of cable, kg-wt/sm2, determined from formula: Ptear=Ftear/Spipe, where Ftear - tear force for cable according to documentation, kg-wt.

EFFECT: higher efficiency.

3 cl, 1 dwg, 1 tbl

FIELD: oil and gas industry.

SUBSTANCE: device is made with possible use in conjunction with scraper for removal of paraffin precipitations. Device includes end piece for connection to well device and metallic rod with variable cross-section. Rod is made in form of at least three serially placed truncated cones. Cones have double relation of greater diameter to lesser diameter.

EFFECT: higher efficiency.

4 cl, 2 dwg

FIELD: oil industry.

SUBSTANCE: all equipment-hoisting operations are performed during underground well maintenance prior to lowering pumping equipment. Equipment is mounted in tail piece lowered into well. After extraction of pumping equipment from the well, end piece with closed end is lowered, having calculated length, dependent on depth of perforation range. Then specially made branch pipe is lowered into well with slit outlet for geophysical cable. Branch pipe with slit outlet is rigidly connected to pipe pumping filter. Then equipment is lowered into tail piece in such a way, that geophysical cable was inserted through slit outlet into behind-pipe area of well. Further, pumping equipment is lowered, including tubing string, well sucker-rod pump and bars column suspension. In such a way, equipment is effectively positioned in tail piece, and connection to secondary equipment is maintained through geophysical cable, connected to tubing string by braces.

EFFECT: higher safety.

FIELD: mining industry.

SUBSTANCE: device has post with mounting holes along circle, forks with aperture for holding fork relatively to post, roller and stopper. Upper portion of post and lower portion of fork are made in form of disc, are combined by axes and have mounting apertures along even circle along axis in a way, that angle between post apertures was different from angle between fork apertures.

EFFECT: higher durability, higher precision, higher efficiency, broader functional capabilities, higher personnel and equipment safety.

1 ex, 3 dwg

Uniting device // 2266407

FIELD: survey device to survey wells during drilling and operation, particularly to unite modules during cooperation thereof.

SUBSTANCE: device comprises body including two parts and ball finger. The ball finger has spherical surfaces mating upper body part. The ball finger is fastened by pressing nut. Lower part of ball finger is screwed in lower body part to which sleeve performing limited axial movement is connected. The sleeve movement is limited by retaining nut. Uniting device air-tightness is provided by sealing ring and pressing nut installation.

EFFECT: increased degree of uniting device movement freedom, improved air-tightness.

1 dwg

Cable adapter sub // 2267002

FIELD: drilling equipment, particularly cable television system used to perform navigational control of directional and horizontal oil and gas well drilling from ground surface and to guide borehole cable rope from inner cavity out of drilling string.

SUBSTANCE: sub comprises threaded connection pipe with thrust end, body with straight and peripheral inclined channels, bush and annular sealing member arranged in straight body channel. Straight body channel is central and provided with cup with inner and outer longitudinal grooves. The bush is installed so that the bush may cooperate with thrust end of threaded connection pipe and has longitudinal extensions arranged in inner longitudinal cup grooves. Annular sealing member comprises extension having orifice and cut for cable introduction into the orifice. The extension is arranged in peripheral inclined channel of the body. Safety means formed as reinforcing member facing straight channel and as elastic member with orifice and cut for cable introduction and arrangement is installed at inclined channel inlet.

EFFECT: increased service life, ease of sub operation and repair.

3 cl, 4 dwg

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