Slurry negative pulse signal downloading device

Abstract

The utility model discloses a mud negative pulse signal downloading device, which comprises an instruction downloading controller, a driving mechanism and a flow valve, the instruction downloading controller is in communication connection with the driving mechanism, the flow valve comprises a valve casing, a valve core and a rotating shaft, the valve core comprises a first valve and a second valve, the valve casing is provided with a liquid inlet and a liquid outlet, and the liquid outlet is communicated with the first valve and the second valve. The first valve and the second valve are both arranged in the valve shell and located between the liquid inlet and the liquid outlet, the first valve is provided with a first liquid passing hole, the second valve is provided with a second liquid passing hole, and the rotating shaft is connected with the driving mechanism and the first valve. And the driving mechanism drives the rotating shaft to drive the first valve to rotate relative to the second valve so as to change the overlapping area between the first liquid passing hole and the second liquid passing hole, so that the flow of slurry passing through the flow valve is changed to generate a slurry negative pulse signal.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a mud negative pulse signal transmission device. Background Art

[0002] In the field of oil and gas drilling, when using conventional directional drilling tools to drill horizontal wells, extended reach wells, five-stage directional wells, etc. with long horizontal sections, the drill pipe of the drilling tool will be subject to greater friction, which will make it difficult to effectively transmit the drilling pressure to the drill bit of the drilling tool. In this case, once the drilling pressure is suddenly released, the reverse torque of the downhole power drill will suddenly increase, which will easily cause the tool face to become unstable. At the same time, the risk of downhole complexity will also increase significantly, which will slow down the drilling speed and cause low drilling efficiency, which will limit the extended drilling capability of the drilling tool in the horizontal section.

[0003] In order to solve this problem, the drilling tool involved in the related technology connects a torque clutch tool between the drill pipe and the downhole power drill. Through the clutch between the drill pipe and the downhole power drill, the drill pipe is rotated to deliver the drill, and the downhole power drill performs sliding directional drilling at the same time. This method can significantly reduce the friction resistance of the drill pipe, achieve the purpose of stabilizing the tool face and improving drilling efficiency.

[0004] The drilling tool involved in the related technology starts and stops the downhole actuator through a mechanical structure, and then controls the clutch and engagement of the torque clutch tool through the downhole actuator, but this method has the problem of complex structure. Utility Model Content

[0005] The utility model discloses a mud negative pulse signal transmission device to solve the problem of complex structure of the downhole actuator of the drilling tool started and stopped by the mechanical structure in the related art.

[0006] In order to solve the above technical problems, the present utility model discloses the following technical solutions:

[0007] A mud negative pulse signal transmission device comprises a command transmission controller, a driving mechanism and a flow valve, wherein the command transmission controller is in communication connection with the driving mechanism, the flow valve comprises a valve housing, a valve core and a rotating shaft, the valve core comprises a first valve and a second valve, the valve housing has a liquid inlet and a liquid outlet,

[0008] The first valve and the second valve are both arranged in the valve housing and located between the liquid inlet and the liquid outlet. The first valve is provided with a first liquid hole, and the second valve is provided with a second liquid hole. The rotating shaft connects the driving mechanism and the first valve. The driving mechanism drives the rotating shaft to drive the first valve to rotate relative to the second valve, so as to change the overlapping area between the first liquid hole and the second liquid hole so that the flow rate of the mud passing through the flow valve changes to generate a mud negative pulse signal.

[0009] Optionally, the first end of the rotating shaft adjacent to the first valve is a hollow end, the hollow end is provided with an inlet and an outlet, the hollow end is arranged inside the valve housing, the inlet is communicated with the outlet, the first valve is fixed at the outlet and can rotate with the rotating shaft, the second valve is fixed to the side of the first valve facing away from the hollow end, and the liquid discharge port is communicated with the liquid inlet through the first liquid hole, the second liquid hole and the inlet.

[0010] Optionally, a through hole is provided on the side of the valve housing facing away from the discharge port, the second end of the rotating shaft passes through the through hole and extends outside the valve housing and is connected to the driving mechanism, a plurality of first sealing rings are provided between the rotating shaft and the inner wall of the through hole, a bearing is provided between the rotating shaft and the inner wall of the through hole, and the plurality of first sealing rings are provided between the bearing and the hollow end.

[0011] Optionally, the mud negative pulse signal transmission device further comprises a protective sleeve, which is sleeved outside the rotating shaft, wherein a first end of the protective sleeve is fixedly connected to the valve housing, and a second end of the protective sleeve is fixedly connected to the driving mechanism.

[0012] Optionally, the valve housing includes a protrusion, the through hole passes through the protrusion, the first end of the protective sleeve is plug-fitted and sleeved outside the protrusion, and is fixedly connected to the protrusion by a fastening connector.

[0013] Optionally, the mud negative pulse signal transmission device also includes a first joint and a first pressure ring, the first port of the first joint is sealingly connected to the liquid inlet, the first joint includes a first annular flange located at the first port of the first joint, the first pressure ring presses the first annular flange to fix the first joint to the valve housing, and a rotating threaded sleeve that can rotate relative to the first joint is provided at the second port of the first joint, and the rotating threaded sleeve can be limitedly matched with the second annular flange at the second port of the first joint in a direction away from the first port.

[0014] Optionally, the mud negative pulse signal transmission device also includes a second joint and a second pressure ring, the first port of the second joint is sealingly connected to the drain port, the second joint includes a third annular flange located at the first port of the second joint, the second pressure ring is sleeved on the second joint, and presses the second annular flange to fix the second joint to the valve housing, and the second port of the second joint is a threaded connection end.

[0015] Optionally, the mud negative pulse signal transmission device also includes a compression sleeve, which is located in the valve housing and lined in the drain port. The compression sleeve is fixedly connected to the valve housing, and the first end of the compression sleeve is connected to the second valve, and the second end of the compression sleeve is sealingly connected to the second joint.

[0016] Optionally, the mud negative pulse signal transmission device further includes a wear-resistant sleeve, and the wear-resistant sleeve is lined in the compression sleeve and the second joint.

[0017] Optionally, the mud negative pulse signal transmission device further includes a frame, and the driving mechanism and the flow valve are both fixed on the frame.

[0018] The damper disclosed in the embodiment of the utility model has the following technical effects:

[0019] In the specific working process, the instruction transmission controller sends out an instruction, and after receiving the instruction, the driving mechanism drives the first valve to rotate relative to the second valve through the rotating shaft, so that the overlapping area between the first liquid hole of the first valve and the second liquid hole of the second valve changes. In this case, it is equivalent to the flow area of ​​the flow valve changing, which causes the mud flow through the flow valve to fluctuate, thereby generating a mud negative pulse signal. A downhole actuator is provided in the well of the drilling well, and the downhole actuator can detect the mud negative pulse signal to control the clutch tool to separate and connect, thereby realizing the separation and connection between the drill pipe of the drilling tool and the downhole power drill. It can be seen that the mud negative pulse signal transmission device disclosed in the embodiment of the utility model can generate a negative pulse signal by changing the flow of mud, and use the negative pulse signal as the control signal of the downhole actuator to control the downhole actuator to drive the clutch tool to separate and connect. This process does not need to control the downhole actuator through a mechanical structure extending to the downhole, thereby alleviating the problem of the relatively complex structure of the drilling tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a mud negative pulse signal transmission device disclosed in an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a flow valve disclosed in an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the connection between the driving mechanism and the flow valve disclosed in the embodiment of the utility model;

[0023] Figure 4 yes Figure 3 sectional view of .

[0024] 01-Instructions are transmitted to the controller,

[0025] 02-driving mechanism, 04-host computer,

[0026] 03-Flow valve,

[0027] 10-valve housing, 11-liquid inlet, 12-liquid outlet, 13-perforation, 14-protrusion, 15-fastening connector,

[0028] 20-shaft, 21-inlet, 22-outlet,

[0029] 30-valve core, 31-first valve, 311-first liquid hole, 32-second valve, 321-second liquid hole,

[0030] 41-first sealing ring, 42-bearing, 43-protective sleeve, 44-bearing end cover,

[0031] 51-first joint, 52-first pressure ring, 511-first annular flange, 512-second annular flange, 53-rotating threaded sleeve,

[0032] 61-second joint, 62-second pressure ring, 611-third annular flange, 63-compression sleeve, 64-wear-resistant sleeve,

[0033] 70-rack. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] The technical solutions disclosed in various embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0036] Please refer to Figures 1 to 4The embodiment of the utility model discloses a mud negative pulse signal transmission device, which is applied to a drilling device. The mud negative pulse signal transmission device disclosed in the embodiment of the utility model may include a command transmission controller 01, a driving mechanism 02 and a flow valve 03.

[0037] The instruction transmission controller 01 can be connected to the host computer (such as a computer) 04 in communication, so as to send out instructions under the control of the host computer. The instruction transmission controller 01 is connected to the drive mechanism 02 in communication, and the instruction transmission controller 01 is used to issue instructions to control the start and stop of the drive mechanism 02. In other words, the drive mechanism 02 starts and stops after receiving the instructions issued by the instruction transmission controller 01. The drive mechanism 02 is connected to the flow valve 03 to drive the flow valve 03 to work.

[0038] In the embodiment of the utility model, the flow valve 03 can change the flow rate of the mud passing through. Specifically, the flow valve 03 includes a valve housing 10, a rotating shaft 20 and a valve core 30. Among them, the valve core 30 is arranged in the valve housing 10, and the valve core 30 includes a first valve 31 and a second valve 32. The valve housing 10 has a liquid inlet 11 and a liquid discharge port 12. Specifically, the valve core 30 is arranged in the space between the liquid inlet 11 and the liquid discharge port 12 in the valve housing 10, that is, the first valve 31 and the second valve 32 are both located in the valve housing 10, and are located in the space between the liquid inlet 11 and the liquid discharge port 12 in the valve housing 10.

[0039] The first valve 31 is provided with a first liquid hole 311, and the second valve 32 is provided with a second liquid hole 321. The slurry entering the valve housing 10 from the liquid inlet 11 will pass through the first liquid hole 311 and the second liquid hole 321 and be discharged from the liquid outlet 12.

[0040] The rotating shaft 20 connects the driving mechanism 02 and the first valve 31. The driving mechanism 02 drives the rotating shaft 20 to drive the first valve 31 to rotate relative to the second valve 32, so as to change the overlapping area between the first liquid hole 311 and the second liquid hole 321, so that the mud flow of the flow valve 03 changes to generate a mud negative pulse signal.

[0041] In the specific working process, the instruction transmission controller 01 sends an instruction, and the driving mechanism 02 drives the first valve 31 to rotate relative to the second valve 32 through the rotating shaft 20 after receiving the instruction, so that the overlapping area between the first liquid hole 311 of the first valve 31 and the second liquid hole 321 of the second valve 32 changes. In this case, it is equivalent to the flow area of ​​the flow valve 03 changing, so that the mud flow through the flow valve 03 fluctuates, thereby generating a mud negative pulse signal. A downhole actuator is provided in the well of the drilling, and the downhole actuator can detect the mud negative pulse signal to control the clutch tool to separate and connect, thereby realizing the separation and connection between the drill pipe of the drilling tool and the downhole power drill. It can be seen that the mud negative pulse signal transmission device disclosed in the embodiment of the utility model can generate a negative pulse signal by changing the flow of mud, and use the negative pulse signal as the control signal of the downhole actuator to control the downhole actuator to drive the clutch tool to separate and connect. This process does not need to control the downhole actuator through a mechanical structure extending to the downhole, thereby alleviating the problem of the relatively complex structure of the drilling tool.

[0042] As described above, the first valve 31 and the second valve 32 are located between the liquid inlet 11 and the liquid discharge port 12, and the rotating shaft 20 is connected to the first valve 31. In order to alleviate the influence of the rotating shaft 20 on the mud flow, optionally, the first end of the rotating shaft 20 adjacent to the first valve 31 can be a hollow end, and the hollow end can be provided with an inlet 21 and an outlet 22. The hollow end is arranged inside the valve housing 10, and the inlet 21 is connected with the outlet 22. The first valve 31 is fixed at the outlet 22 and can rotate with the rotating shaft 20. The second valve 32 is fixed to the side of the first valve 31 facing away from the hollow end. The liquid discharge port 12 is connected with the liquid inlet 11 through the first liquid hole 311, the second liquid hole 321 and the inlet 21. This optional solution ensures the smooth flow between the liquid discharge port 12 and the liquid inlet 11 by designing the first end of the rotating shaft 20 located inside the valve housing 10 as a hollow end, and providing the inlet 21 and the outlet 22 at the hollow end, so as to reduce the influence of the rotating shaft 20 on the mud flow.

[0043] The rotating shaft 20 is connected to the driving mechanism 02 and rotates under the drive of the driving mechanism 02. Based on this, the second end of the rotating shaft 20 is outside the valve housing 10 and is connected to the driving mechanism 02. Specifically, the first side of the valve housing 10 away from the discharge port 12 may be provided with a through hole 13, and the second end of the rotating shaft 20 passes through the through hole 13 and extends to the outside of the valve housing 10 and is connected to the driving mechanism 02. A plurality of first sealing rings 41 may be provided between the rotating shaft 20 and the inner wall of the through hole 13, and a bearing 42 may be provided between the rotating shaft 20 and the inner wall of the through hole 13, and the bearing 42 can realize the rotation of the rotating shaft 20 relative to the valve housing 10, and the plurality of first sealing rings 41 can seal the gap between the rotating shaft 20 and the inner wall of the through hole 13, thereby preventing the mud from flowing out of the valve housing 10 from the through hole 13. Specifically, a bearing end cover 44 may be fixed to the outer side of the bearing 42, and the bearing end cover 44 can protect the bearing 42.

[0044] In a more specific embodiment, multiple first sealing rings 41 can be disposed between the bearing 42 and the hollow end. In this case, the bearing 42 can be isolated by the multiple first sealing rings 41 , thereby preventing mud from invading the bearing 42 and damaging the bearing 42 .

[0045] Of course, a first sealing ring 41 may also be disposed between the rotating shaft 20 and the inner wall of the through hole 13, and the embodiment of the utility model does not limit the number of the first sealing rings 41. Of course, the embodiment of the utility model does not limit the shape and material of the first sealing ring 41 either.

[0046] The first end of the rotating shaft 20 is located inside the valve housing 10, and the second end of the rotating shaft 20 is located outside the valve housing 10 and is connected to the driving mechanism 02. In other words, the rotating shaft 20 is partially exposed. Based on this, optionally, the mud negative pulse signal transmission device disclosed in the embodiment of the utility model may also include a protective sleeve 43, which is sleeved on the rotating shaft 20 and located between the driving mechanism 02 and the valve housing 10. The protective sleeve 43 can shield the exposed part of the rotating shaft 20, thereby playing a protective function. The protective sleeve 43 can be made of a metal material with higher strength. For example, the protective sleeve 43 can be a cast iron structure or a steel structure.

[0047] In order to facilitate installation and improve the stability of installation, the valve housing 10 may optionally include a protrusion 14, which faces the drive mechanism 02. The through hole 13 passes through the protrusion 14, and the first end of the protective sleeve 43 is sleeved outside the protrusion 14 by plug-fitting, and can be fixedly connected to the protrusion 14 by a fastening connector 15. The fastening connector 15 can be a screw, a rivet, etc., and the embodiment of the utility model does not limit the specific type of the fastening connector 15.

[0048] During the specific working process, the mud needs to flow through the flow valve 03. In order to facilitate the connection with other manifolds, in a further embodiment, the mud negative pulse signal transmission device disclosed in the embodiment of the utility model can also include a first connector 51 and a first pressure ring 52. The first port of the first connector 51 is sealed and connected to the liquid inlet 11, and the first connector 51 includes a first annular flange 511 located at the first port of the first connector 51.

[0049] The first pressure ring 52 presses the first annular flange 511 to fix the first joint 51 to the valve housing 10. A rotating threaded sleeve 53 that can rotate relative to the first joint 51 is provided at the second port of the first joint 51. The rotating threaded sleeve 53 can be limitedly matched with the second annular flange 512 at the second port of the first joint 51 in a direction away from the first port.

[0050] Similarly, the mud negative pulse signal transmission device disclosed in the embodiment of the utility model can also include a second joint 61 and a second pressure ring 62. The first port of the second joint 61 is sealed and connected to the drain port 12. The second joint 61 includes a third annular flange 611 located at the first port of the second joint 61. The second pressure ring 62 is sleeved on the second joint 61 and presses the third annular flange 611 to fix the second joint 61 to the valve housing 10. The second port of the second joint 61 is a threaded connection end.

[0051] The mud negative pulse signal transmission device disclosed in the embodiment of the utility model may also include a compression sleeve 63, which is located in the valve housing 10 and lined in the drain port 12. The compression sleeve 63 is fixedly connected to the valve housing 10, and the first end of the compression sleeve 63 is connected to the second valve 32, and the second end of the compression sleeve 63 is sealed and connected to the second joint 61.

[0052] In order to alleviate the scouring of mud with changing flow rate, optionally, the mud negative pulse signal transmission device disclosed in the embodiment of the utility model may also include a wear-resistant sleeve 64, and the wear-resistant sleeve 64 may be lined in the compression sleeve 63 and the second joint 61, so as to prevent the mud from directly scouring the compression sleeve 63 and the second joint 61, which is beneficial to extend the service life of the compression sleeve 63 and the second joint 61.

[0053] The mud negative pulse signal transmission device disclosed in the embodiment of the utility model can also include a frame 70, and the driving mechanism 02 and the flow valve 03 can be fixed on the frame 70, thereby forming an integral module by being fixed on the same basis, thereby facilitating transportation, transfer, centralized maintenance, etc.

[0054] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A mud negative pulse signal transmission device, characterized in that: The invention comprises an instruction transmission controller (01), a driving mechanism (02) and a flow valve (03), wherein the instruction transmission controller (01) is communicatively connected with the driving mechanism (02), the flow valve (03) comprises a valve housing (10), a valve core (30) and a rotating shaft (20), the valve core (30) comprises a first valve (31) and a second valve (32), the valve housing (10) has a liquid inlet (11) and a liquid outlet (12), The first valve (31) and the second valve (32) are both arranged in the valve housing (10) and located between the liquid inlet (11) and the liquid outlet (12); the first valve (31) is provided with a first liquid hole (311), and the second valve (32) is provided with a second liquid hole (321); the rotating shaft (20) connects the driving mechanism (02) and the first valve (31); the driving mechanism (02) drives the rotating shaft (20) to drive the first valve (31) to rotate relative to the second valve (32) so as to change the overlapping area between the first liquid hole (311) and the second liquid hole (321) so as to change the flow rate of the mud passing through the flow valve (03) to generate a mud negative pulse signal.

2. The mud negative pulse signal transmission device according to claim 1 is characterized in that: The first end of the rotating shaft (20) adjacent to the first valve (31) is a hollow end, and the hollow end is provided with an inlet (21) and an outlet (22). The hollow end is arranged inside the valve housing (10), and the inlet (21) is communicated with the outlet (22). The first valve (31) is fixed at the outlet (22) and can rotate with the rotating shaft (20). The second valve (32) is fixed to a side of the first valve (31) facing away from the hollow end. The liquid discharge port (12) is communicated with the liquid inlet (11) through the first liquid passage hole (311), the second liquid passage hole (321) and the inlet (21).

3. The mud negative pulse signal transmission device according to claim 2 is characterized in that: A through hole (13) is provided on the side of the valve housing (10) facing away from the discharge port (12); the second end of the rotating shaft (20) passes through the through hole (13) and extends outside the valve housing (10) and is connected to the driving mechanism (02); a plurality of first sealing rings (41) are provided between the rotating shaft (20) and the inner wall of the through hole (13); a bearing (42) is provided between the rotating shaft (20) and the inner wall of the through hole (13); and the plurality of first sealing rings (41) are provided between the bearing (42) and the hollow end.

4. The mud negative pulse signal transmission device according to claim 3 is characterized in that: The mud negative pulse signal transmission device also includes a protective sleeve (43), which is sleeved outside the rotating shaft (20), the first end of the protective sleeve (43) is fixedly connected to the valve housing (10), and the second end of the protective sleeve (43) is fixedly connected to the driving mechanism (02).

5. The mud negative pulse signal transmission device according to claim 4 is characterized in that: The valve housing (10) comprises a protrusion (14), the through hole (13) passes through the protrusion (14), the first end of the protective sleeve (43) is plug-fitted and sleeved outside the protrusion (14), and is fixedly connected to the protrusion (14) via a fastening connector (15).

6. The mud negative pulse signal transmission device according to claim 1, characterized in that: The mud negative pulse signal transmission device also includes a first joint (51) and a first pressure ring (52). The first port of the first joint (51) is sealed and connected to the liquid inlet (11). The first joint (51) includes a first annular flange (511) located at the first port of the first joint (51). The first pressure ring (52) presses the first annular flange (511) to fix the first joint (51) to the valve housing (10). A rotating threaded sleeve (53) that can rotate relative to the first joint (51) is provided at the second port of the first joint (51). The rotating threaded sleeve (53) can be limitedly matched with the second annular flange (512) at the second port of the first joint (51) in a direction away from the first port.

7. The mud negative pulse signal transmission device according to claim 1 is characterized in that: The mud negative pulse signal transmission device also includes a second connector (61) and a second pressure ring (62). The first port of the second connector (61) is sealingly connected to the drain port (12). The second connector (61) includes a third annular flange (611) located at the first port of the second connector (61). The second pressure ring (62) is sleeved on the second connector (61) and presses the third annular flange (611) to fix the second connector (61) to the valve housing (10). The second port of the second connector (61) is a threaded connection end.

8. The mud negative pulse signal transmission device according to claim 7, characterized in that: The mud negative pulse signal transmission device also includes a compression sleeve (63), which is located in the valve housing (10) and lined in the drain port (12). The compression sleeve (63) is fixedly connected to the valve housing (10), and the first end of the compression sleeve (63) is connected to the second valve (32), and the second end of the compression sleeve (63) is sealed and connected to the second joint (61).

9. The mud negative pulse signal transmission device according to claim 8, characterized in that: The mud negative pulse signal transmission device further comprises a wear-resistant sleeve (64), wherein the wear-resistant sleeve (64) is lined in the compression sleeve (63) and the second joint (61).

10. The mud negative pulse signal transmission device according to any one of claims 1 to 9, characterized in that: The mud negative pulse signal transmission device further comprises a frame (70), and the driving mechanism (02) and the flow valve (03) are both fixed on the frame (70).

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