CN109779524B - Cable type drilling orientation device - Google Patents
Cable type drilling orientation device Download PDFInfo
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- CN109779524B CN109779524B CN201910175819.4A CN201910175819A CN109779524B CN 109779524 B CN109779524 B CN 109779524B CN 201910175819 A CN201910175819 A CN 201910175819A CN 109779524 B CN109779524 B CN 109779524B
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Abstract
The invention relates to a cable type drilling directional device, which comprises a device shell, wherein a speed reducing motor is arranged in the device shell, the cable type drilling directional device also comprises a rotary joint, one end of the rotary joint is in transmission connection with the speed reducing motor, the other end of the rotary joint is used for connecting an underground drilling device, and the rotary joint is rotatably arranged in the device shell; the motor casing and the device casing are provided with a gap, the rotary joint is provided with a cavity with an opening facing the drilling device, the outer wall of the rotary joint is provided with a pore canal communicated with the gap, and the gap, the pore canal and the cavity form a mud channel so as to provide driving force for the downhole drilling device. The electric power is conveyed to the underground through the cable to drive the gear motor to work, the gear motor drives the rotary joint to rotate, the rotary joint is connected with the underground drilling device, the gear motor directly drives the rotary joint to perform drilling azimuth control, the orientation is accurate, and the azimuth control precision is high. Compared with the prior art which relies on mud wave communication, the invention uses the cable for communication, and has high reliability and high speed.
Description
Technical Field
The invention relates to the field of drilling equipment, in particular to a cable type drilling orientation device.
Background
Modern drilling is intelligent drilling, and information transmission is carried out on the ground and underground at all times. The direction of a drilling tool is required to be frequently adjusted in modern horizontal well drilling, so that a well bore extends according to a pre-designed track and runs through an oil layer, thus the later-period exploitation oil drainage area is large, and the exploitation efficiency is high. The drilling directional device is a tool for adjusting the drilling direction, and works along with a drill bit and a motor in the well. The traditional well drilling directional tool is a mud type, information is transmitted by mud waves, and a directional device is driven to rotate by high-pressure mud. The mode has low steering precision in driving rotation, and is easy to cause inconsistent actual well bores and design tracks and even larger deviation. The mode of transmitting signals by using mud also has the defects of low speed, less information quantity, low reliability, incapability of long-distance transmission of signals and the like.
Disclosure of Invention
The invention aims to provide a cable type drilling directional device which transmits ground electric energy to underground through a cable to enable a gear motor to rotate and drive an underground tool to rotate so as to adjust a borehole track, and the problems that the rotation accuracy is low and the borehole is inconsistent with a design track due to the fact that mud is used for driving in the prior art are solved.
In order to achieve the above purpose, the invention provides a cable drilling directional device, which adopts the following technical scheme: the cable type drilling directional device comprises a device shell, wherein a gear motor is arranged in the device shell, the gear motor comprises a motor shell, the cable type drilling directional device further comprises a rotary joint, one end of the rotary joint is in transmission connection with the gear motor, the other end of the rotary joint is used for being connected with a downhole drilling device, and the rotary joint is rotatably arranged in the device shell; the motor casing and the device casing are provided with a gap, the rotary joint is provided with a cavity with an opening facing the drilling device, the outer wall of the rotary joint is provided with a pore canal communicated with the gap, and the gap, the pore canal and the cavity form a mud channel to provide driving force of the downhole drilling device.
The motor shell is arranged inside the device shell through the adapter sleeve, a communication hole is formed in the cavity wall of the adapter sleeve, one end of the communication hole is communicated with a gap between the motor shell and the device shell, and the other end of the connection hole is communicated with a pore canal on the rotary joint.
And anti-rotation spline structures are arranged between the adapter sleeve and the device shell and between the adapter sleeve and the motor shell.
The adapter sleeve is characterized in that a first radial bearing for installing one end of the rotary joint is arranged on the inner wall of the adapter sleeve, a hollow end head is arranged at the end part of the device shell, a second radial bearing for installing the other end of the rotary joint is arranged on the inner wall of the end head, and a bidirectional thrust bearing for installing the rotary joint is arranged between the first radial bearing and the second radial bearing on the inner wall of the device shell.
The number of the two bidirectional thrust bearings is two, each bidirectional thrust bearing comprises a first bidirectional thrust bearing close to the adapter sleeve and a second bidirectional thrust bearing close to the end socket, a first wave spring is sleeved between the first bidirectional thrust bearing and the adapter sleeve on the rotary joint, and a second wave spring is sleeved between the second bidirectional thrust bearing and the end socket on the rotary joint.
The rotary joint is characterized in that a force-bearing ring is sleeved between the two bidirectional thrust bearings, a groove is formed in the outer wall of the rotary joint, a mounting hole corresponding to the groove is formed in the force-bearing ring, a shearing block is arranged in the mounting hole, and the end part of the shearing block stretches into the groove to be in limiting stop fit with the groove in the axial direction of the device shell.
The electric connector is characterized in that a hole electric connector used for being connected with an electric signal of the underground drilling device is arranged in a cavity of the rotary joint and used for transmitting information of the underground drilling device, the other end of the hole electric connector is fixedly connected to the rotary joint, a slip ring electric connector is electrically connected to the connecting end of the hole electric connector, and the slip ring electric connector is used for transmitting information through a cable.
The slip ring electric connector comprises an annular conductor arranged on the adapter sleeve, a punctiform conductor arranged on the rotary joint and a spring pressing the punctiform conductor, wherein the annular conductor is connected with a motor end cable, and the punctiform conductor is connected with a hole electric connector cable.
The adapter sleeve is provided with a cable channel, and the inner wall of the gear motor shell is provided with a cable mounting groove communicated with the cable channel.
The invention has the beneficial effects that: the electric power is conveyed underground through the cable to drive the gear motor to work, the gear motor drives the rotary joint to rotate, the rotary joint is connected with the underground drilling device, the drilling device is a conventional drilling device, such as a mud motor, a mud channel is arranged in the directional device so that mud can enter the mud motor to provide driving force for the mud, the gear motor directly drives the rotary joint to perform drilling azimuth control, the orientation is accurate, and the azimuth control precision is high.
Further, through hole electric connector, sliding ring electric connector and cable, with the information transmission of device in pit to the aboveground, also have information transmission speed fast with the cable transmission signal, quantity is big, and the reliability is high, signal transmission does not receive advantages such as long distance transmission restriction.
Drawings
FIG. 1 is a schematic illustration of the construction of one embodiment of a wireline drilling orientation apparatus of the present invention;
fig. 2 is a partial enlarged view at a in fig. 1.
Detailed Description
An embodiment of the cable type well drilling directional device of the invention is shown in fig. 1-2, and comprises a device shell 1, wherein a gear motor 2 is arranged in the device shell 1, the gear motor 2 comprises a motor shell 3, and the cable type well drilling directional device also comprises a rotary joint 4, one end of which is in transmission connection with the gear motor 2, and the other end of which is used for being connected with a downhole device. The rotary joint 4 is rotatably mounted in the device housing. The swivel 4 comprises a swivel mounting portion 5 in the device housing and a drilling device mounting portion 6 at the end of the device housing. The downhole drilling apparatus is in this embodiment a mud motor. The motor housing 3 is arranged in the device housing through the adapter sleeve 7, and anti-rotation spline structures are arranged between the adapter sleeve 7 and the device housing 1 and between the adapter sleeve 7 and the motor housing 3.
A gap 8 is arranged between the motor housing 3 and the device housing 1, the rotary joint 4 is provided with a cavity 9 which is opened towards the drilling device, a pore canal 10 which is communicated with the gap 8 is arranged on the outer wall of the rotary joint 4, and the gap 8 and the pore canal 10 form a mud channel to provide driving force of the drilling device. The cavity wall of the adapter sleeve 7 is provided with a communication hole 11 which is communicated with the gap between the motor shell and the device shell and is also communicated with the pore canal on the rotary joint so as to allow mud to pass through. The cavity 9 is internally provided with a hole electric connector 12 which is used for being connected with an electric signal of the drilling device and used for transmitting the signal of the drilling device, the other end of the hole electric connector 12 is fixedly connected to the rotary joint 4, the connecting end of the hole electric connector is electrically connected with a slip ring electric connector 23, and the slip ring electric connector 23 is used for transmitting information through a cable 26 and transmitting the information to the well.
The rotary joint 4 is provided with a mounting cavity communicated with the cavity 9, a sealing joint 22 is arranged in the mounting cavity, and the hole electric connector is electrically connected with the sealing joint 22. The rotary joint is provided with a first connecting hole, the hole electric connector is provided with a second connecting hole corresponding to the first connecting hole, and the first connecting hole and the second connecting hole are connected through a screw 21. The slip ring electric connector 23 comprises an annular conductor 27 mounted on the adapter sleeve 7, a point conductor 30 mounted on the rotary joint 4 and a spring 29 pressing the point conductor 30, wherein the annular conductor 27 is connected with a motor end cable, and the point conductor 30 is connected with a hole electric connector cable 31. The adapter sleeve is provided with a cable channel 28, and the inner wall of the gear motor shell is provided with a cable mounting groove 25 communicated with the cable channel 28.
The adapter sleeve is provided with a first radial bearing 14 for installing one end of a rotary joint on the inner wall of the adapter sleeve, the end part of the device shell is provided with a hollow end head 20, the end head 20 is in threaded connection with the device shell, the inner wall of the end head 20 is provided with a second radial bearing 15 for installing the other end of the rotary joint, and a bidirectional thrust bearing 16 for installing the rotary joint is arranged between the first radial bearing 14 and the second radial bearing 15 on the inner wall of the device shell 1. The number of the two-way thrust bearings 16 is two, each two-way thrust bearing comprises a first two-way thrust bearing close to the adapter sleeve and a second two-way thrust bearing close to the end socket, a first wave spring 17 is sleeved between the first two-way thrust bearing and the adapter sleeve on the rotary joint, and a second wave spring is sleeved between the second two-way thrust bearing and the end socket on the rotary joint. The rotary joint is guided by two radial bearings and is axially supported and damped by a bidirectional thrust bearing and a wave spring. The rotary joint is provided with a force-bearing ring 18 in a sleeved mode between the two bidirectional thrust bearings, the outer wall of the rotary joint is provided with a groove, the force-bearing ring 18 is provided with a mounting hole corresponding to the groove, a shear block 19 is arranged in the mounting hole, and the end portion of the shear block 19 extends into the groove to be in limiting stop fit with the groove in the axial direction of the shell.
When the cable type drilling directional device is used, mud enters a mud motor through a mud channel formed by a gap between a motor shell and a device shell, a cavity of a rotary joint, a pore canal on the outer wall of the rotary joint and a communication hole on an adapter sleeve, and drives a drill bit to rotate to drill. Downhole azimuth signals pass electrical signals uphole through the electrical hole connector and cable. When the azimuth is required to be changed, the cable is used for supplying power, the gear motor works, and the rotary joint is driven to rotate until the azimuth requirement is met. When the well is required to be deflected, the gear motor stops rotating, the well bore can deflect according to the angle of the bent shell of the mud motor, when the well enters the horizontal section and is not required to be deflected, the gear motor continuously rotates slowly by 360 degrees, the well bore is expanded, the deflecting is not performed any more, and the directional drilling deflecting and the non-deflecting mode switching are realized. The cable type drilling directional device has the advantages of high precision, convenience in operation and control and capability of continuous bidirectional rotation.
The invention has the advantages that ground electric energy is transmitted to the underground through the cable to enable the gear motor to rotate, the underground tool is driven to rotate to adjust the track of the borehole, and the problems that the rotation precision is low due to the fact that mud is used for driving in the prior art and the borehole is inconsistent with the designed track are solved. Meanwhile, the cable is used for transmitting signals, and the cable has the advantages of high information transmission speed, large quantity, high reliability, no long-distance transmission limit of signal transmission and the like.
Claims (5)
1. A wireline drilling directional device, characterized by: the cable type drilling directional device comprises a device shell, wherein a gear motor is arranged in the device shell, the gear motor comprises a motor shell, the cable type drilling directional device further comprises a rotary joint, one end of the rotary joint is in transmission connection with the gear motor, the other end of the rotary joint is used for being connected with a downhole drilling device, and the rotary joint is rotatably arranged in the device shell; a gap is formed between the motor shell and the device shell, the rotary joint is provided with a cavity with an opening facing the drilling device, the outer wall of the rotary joint is provided with a pore canal communicated with the gap, and the gap, the pore canal and the cavity form a mud channel so as to provide driving force for the downhole drilling device; the motor shell is arranged in the device shell through the adapter sleeve, a communication hole is formed in the cavity wall of the adapter sleeve, one end of the communication hole is communicated with a gap between the motor shell and the device shell, and the other end of the connection hole is communicated with a pore canal on the rotary joint; the cavity of the rotary joint is provided with a hole electric connector for being connected with an electric signal of the underground drilling device, the hole electric connector is used for transmitting information of the underground drilling device, the other end of the hole electric connector is fixedly connected to the rotary joint, the connecting end of the hole electric connector is electrically connected with a slip ring electric connector, and the slip ring electric connector transmits information through a cable; the slip ring electric connector comprises an annular conductor arranged on the adapter sleeve, a punctiform conductor arranged on the rotary joint and a spring for pressing the punctiform conductor, wherein the annular conductor is connected with a motor end cable, and the punctiform conductor is connected with a hole electric connector cable; a cable channel is arranged on the adapter sleeve, and a cable mounting groove communicated with the cable channel is arranged on the inner wall of the gear motor shell; the rotary joint is provided with a mounting cavity communicated with the cavity, a sealing joint is arranged in the mounting cavity, and the hole electric connector is connected with the sealing joint.
2. The wireline drilling orientation apparatus of claim 1 wherein: and anti-rotation spline structures are arranged between the adapter sleeve and the device shell and between the adapter sleeve and the motor shell.
3. The wireline drilling orientation apparatus of claim 1 wherein: the adapter sleeve is characterized in that a first radial bearing for installing one end of the rotary joint is arranged on the inner wall of the adapter sleeve, a hollow end head is arranged at the end part of the device shell, a second radial bearing for installing the other end of the rotary joint is arranged on the inner wall of the end head, and a bidirectional thrust bearing for installing the rotary joint is arranged between the first radial bearing and the second radial bearing on the inner wall of the device shell.
4. A wireline drilling orientation apparatus according to claim 3, wherein: the number of the two bidirectional thrust bearings is two, each bidirectional thrust bearing comprises a first bidirectional thrust bearing close to the adapter sleeve and a second bidirectional thrust bearing close to the end socket, a first wave spring is sleeved between the first bidirectional thrust bearing and the adapter sleeve on the rotary joint, and a second wave spring is sleeved between the second bidirectional thrust bearing and the end socket on the rotary joint.
5. The wireline drilling orientation apparatus of claim 4 wherein: the rotary joint is characterized in that a force-bearing ring is sleeved between the two bidirectional thrust bearings, a groove is formed in the outer wall of the rotary joint, a mounting hole corresponding to the groove is formed in the force-bearing ring, a shearing block is arranged in the mounting hole, and the end part of the shearing block stretches into the groove to be in limiting stop fit with the groove in the axial direction of the device shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910175819.4A CN109779524B (en) | 2019-03-08 | 2019-03-08 | Cable type drilling orientation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910175819.4A CN109779524B (en) | 2019-03-08 | 2019-03-08 | Cable type drilling orientation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109779524A CN109779524A (en) | 2019-05-21 |
| CN109779524B true CN109779524B (en) | 2024-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910175819.4A Active CN109779524B (en) | 2019-03-08 | 2019-03-08 | Cable type drilling orientation device |
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| CN (1) | CN109779524B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112878914B (en) * | 2021-02-08 | 2021-11-19 | 中国科学院地质与地球物理研究所 | Rotary steering drilling device |
| US11396777B1 (en) | 2021-02-08 | 2022-07-26 | Institute Of Geology And Geophysics, Chinese Academy Of Sciences | Rotary steering drilling apparatus |
| CN113107388B (en) * | 2021-05-18 | 2024-03-05 | 铁福来装备制造集团股份有限公司 | Rotary joint for drilling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2486777A (en) * | 2010-12-23 | 2012-06-27 | Schlumberger Holdings | A drilling system incorporating a flow diverter |
| CN105888550A (en) * | 2016-05-05 | 2016-08-24 | 中国石油天然气集团公司 | Coiled tubing drilling electric-hydraulic control directional tool |
| CN210195663U (en) * | 2019-03-08 | 2020-03-27 | 南阳市天达同兴石油技术有限公司 | Cable type drilling directional device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU605122B2 (en) * | 1985-12-19 | 1991-01-10 | Ben Wade Oakes Dickinson Iii | Mechanically actuated whipstock assembly |
| AU656305B2 (en) * | 1989-06-09 | 1995-02-02 | Raychem Corporation | Feedthrough coaxial cable connector |
| CN2503639Y (en) * | 2001-11-02 | 2002-07-31 | 洛阳航空电器厂 | Electric connector with circular wire spring jack |
| CN104963628A (en) * | 2015-06-25 | 2015-10-07 | 中国石油天然气集团公司 | Coiled tubing drilling electric-hydraulic control orienting device |
| US10294777B2 (en) * | 2015-07-27 | 2019-05-21 | Cudd Pressure Control, Inc. | Steering tool system |
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2019
- 2019-03-08 CN CN201910175819.4A patent/CN109779524B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2486777A (en) * | 2010-12-23 | 2012-06-27 | Schlumberger Holdings | A drilling system incorporating a flow diverter |
| CN105888550A (en) * | 2016-05-05 | 2016-08-24 | 中国石油天然气集团公司 | Coiled tubing drilling electric-hydraulic control directional tool |
| CN210195663U (en) * | 2019-03-08 | 2020-03-27 | 南阳市天达同兴石油技术有限公司 | Cable type drilling directional device |
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| CN109779524A (en) | 2019-05-21 |
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