CN111608582A - Reversing control system based on hydraulic drive - Google Patents
Reversing control system based on hydraulic drive Download PDFInfo
- Publication number
- CN111608582A CN111608582A CN202010426068.1A CN202010426068A CN111608582A CN 111608582 A CN111608582 A CN 111608582A CN 202010426068 A CN202010426068 A CN 202010426068A CN 111608582 A CN111608582 A CN 111608582A
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- China
- Prior art keywords
- reversing
- control system
- switching
- hydraulic drive
- system based
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- Granted
Links
- 238000007789 sealing Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 16
- 239000012530 fluid Substances 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a reversing control system based on hydraulic drive, which comprises a connecting sleeve, wherein an upper shell and a lower shell are arranged in the connecting sleeve, a central shaft is arranged in the connecting sleeve, a reversing structure is arranged on the central shaft, the reversing mechanism comprises a reversing head, a reversing gear ring and a ball bearing, the reversing gear ring is embedded in the outer side of the reversing head, a plurality of guide ribs are uniformly and radially distributed on the reversing gear ring according to 30 degrees, the guide ribs are coupled with the inner wall of the shell, an annular groove is formed in the cavity of the reversing head, the ball bearing is arranged in the annular groove, the ball bearing is sleeved on the central shaft, and a ball sliding sleeve is arranged on the outer side of the lower shell and is connected with the inner wall of the connecting sleeve. The reversing mechanism can accurately realize the reversing function, the mechanical control structure realizes the angle control of the rotary guiding tool, the electromagnetic interference can be effectively avoided, the control is simple, and the performance is reliable.
Description
Technical Field
The invention relates to the field of a guided drilling system, in particular to a reversing control system based on hydraulic drive.
Background
The rotary steering drilling system is a steering type drilling system which can complete the steering function in real time while drilling when a drill string is rotated and drilled, and the steering mechanism of the RSS system is an important step for implementing steering control on a drill bit. System rotary steerable drilling systems require higher demands on well trajectory control accuracy and displacement extension capability because the downhole tools are constantly rotating.
The closed-loop control system of the existing rotary steering well system is arranged underground, underground instruments of the control system are limited by conditions such as well hole size, environment temperature, instrument power supply, signal transmission and control means, electromagnetic control is adopted, the danger of control failure occurs in a stratum with strong geomagnetic force, and therefore the extremely high crisis drilling safety is achieved.
Disclosure of Invention
The invention aims to provide a hydraulic drive-based reversing control system.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention comprises a connecting sleeve, wherein an upper shell and a lower shell are arranged in the connecting sleeve, a central shaft is arranged in the connecting sleeve, a reversing structure is arranged on the central shaft, the reversing mechanism comprises a reversing head, a reversing gear ring and a ball bearing, one end of the reversing head is connected with a return spring, the other end of the return spring is connected with a return spring baffle, the reversing gear ring is embedded outside the reversing head, a plurality of guide ribs are uniformly and radially distributed on the reversing gear ring according to 30 degrees, the guide ribs are coupled with the inner wall of the shell, an annular groove is arranged in a cavity of the reversing head, the ball bearing is arranged in the annular groove, the ball bearing is sleeved on the central shaft, and a ball sliding sleeve is arranged outside the lower shell and is connected with the inner wall of the connecting sleeve.
Further, an outer valve cavity is arranged in the lower shell, the inner disc valve is connected with the outer valve cavity, a thrust spring is arranged in the cavity of the outer valve cavity, one side of the thrust spring is connected with the inner wall of the cavity of the outer valve cavity, and the other side of the thrust spring is connected with the inner disc valve.
Further, the inner disc valve is of a disc-shaped structure.
Further, the inner disc valve is provided with a 120-degree arc-shaped through hole and matched with the high-pressure throttling hole in the outer valve cavity.
Furthermore, the bottom end of the outer valve cavity is provided with three holes which are uniformly distributed at 120 degrees and are communicated with the corresponding slurry injection ports.
Furthermore, an annular sealing groove is formed between the reversing mechanism and the outer valve cavity, and an annular sealing ring is embedded in the annular sealing groove.
Further, the bypass valve includes a bypass valve spool, a bypass valve body, and a bypass valve spring, the bypass valve being disposed on the central shaft.
Compared with the prior art, the invention has the following beneficial effects:
the reversing mechanism can accurately realize the reversing function, the mechanical control structure realizes the angle control of the rotary guiding tool, the electromagnetic interference can be effectively avoided, the control is simple, and the performance is reliable.
Drawings
FIG. 1 is a schematic structural diagram of a reversing control system based on hydraulic drive;
① upper case, ② reversing gear ring, ③ reversing head, ④ return spring, ⑤ connecting sleeve, ⑥ ball sliding sleeve, ⑦ lower case, ⑧ outer valve chamber, ⑨ thrust spring, ⑩ inner disk valve,
an annular sealing ring is arranged on the inner side of the shell,
a ring-groove type rigid sealing sleeve is arranged,
a valve body of the bypass valve,
a bypass valve spring is provided in the housing,
a valve core of the bypass valve,
a baffle plate of a return spring is arranged on the upper part of the shell,
a central shaft is arranged at the center of the rotary shaft,
ball bearing
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be in a manner including, but not limited to, the following examples.
As shown in fig. 1, the present invention includes a connecting sleeve 5, an upper housing 1 and a lower housing 7 are arranged in the connecting sleeve 5, a central shaft is arranged in the connecting sleeve, a reversing structure is arranged on the central shaft, the reversing mechanism includes a reversing head 3, a reversing gear ring 2 and ball bearings 18, the reversing gear ring is embedded on the outer side of the reversing head 3, one end of the reversing head 3 is connected with a return spring 4, the other end of the return spring 4 is connected with a return spring baffle, a plurality of guide ribs are uniformly and radially distributed on the reversing gear ring 2 according to 30 degrees, the plurality of guide ribs are coupled with the inner wall of the housing, an annular groove is arranged in the cavity of the reversing head 3, the ball bearings 18 are arranged in the annular groove, the ball bearings 18 are sleeved on the central shaft, the outer side of the lower housing is provided with a ball sliding sleeve 6 and connected with the inner wall of the connecting sleeve 5, an outer valve cavity 8 is arranged in the lower shell 7, the inner disc valve 10 is connected with the outer valve cavity 8, a thrust spring 9 is arranged in the cavity of the outer valve cavity 8, one side of the thrust spring 9 is connected with the inner wall of the cavity of the outer valve cavity 8, and the other side of the thrust spring 9 is connected with the inner disc valve.
And the limiting check ring is provided with a return spring for resetting the reversing mechanism.
The inner disc valve 10 is of a disc-shaped configuration.
The inner disk valve 10 is provided with a 120-degree arc-shaped through hole and is matched with a high-pressure throttling hole in the outer valve cavity.
The bottom end of the outer valve cavity 8 is provided with three holes which are uniformly distributed at 120 degrees and are communicated with the corresponding slurry injection ports.
An annular sealing groove is arranged between the reversing mechanism and the outer valve cavity 8, and an annular sealing ring is embedded in the annular sealing groove.
The bypass valve includes a bypass valve spool 15, a bypass valve body 13, and a bypass valve spring 14, which is disposed on the center shaft.
The working principle of the reversing mechanism is as follows:
the reversing mechanism on the upper part of the reversing positioning system is coupled with a reversing tooth groove on the guide head body, drilling fluid enters a central shaft and is throttled by a throttle valve until the pressure rises to a certain preset value, the guide central shaft is pushed to the drill bit direction to move downwards under the action of pressure difference, the reversing mechanism is driven to move downwards under the action of the throttle valve, a return spring 4 of the reversing mechanism is compressed, the downward movement is stopped when the pressure reaches the downward displacement end point, simultaneously, healthy teeth on the periphery of a reversing gear ring 2 are coupled with a lower shell to form resultant force, the guide mechanism moves upwards under the action of the return spring 4, and the reversing gear ring is in contact with the reversing mechanism to rotate radially, so that each back-and-forth stroke.
When the guiding is needed, the through valve is opened, the drilling fluid enters the disc valve combined cavity, at the moment, the inner disc valve 10 moves downwards under the action of the drilling fluid and overcomes the elasticity to enable the upper outer valve cavity 8 to be tightly attached together, the arc-shaped through hole of the inner disc valve 10 and two of the outer valve cavity 8 form a passage, the drilling fluid flows into the drilling fluid bag cavity through the passage to enable the corresponding supporting rib to extend out, the guiding purpose is achieved, and the direction of the supporting rib which does not extend out is the working direction.
When the pump needs to be in a stable inclination state, the pump displacement is reduced, the inner disc valve 10 is upwards retracted under the action of the thrust spring, the upper valve cavity 8 and the outer valve cavity 8 are separated, three drilling fluid injection ports on the outer valve cavity 8 are all opened, at the moment, a bypass valve and a hole on the central shaft form a passage for drilling fluid to enter the disc valve combined cavity, the drilling fluid flows into three through holes on the outer valve cavity 8 and then enters the drilling fluid bag cavity, and therefore three supporting ribs are all opened, and the stable inclination state is achieved.
When the fully-closed state is required, the bypass valve is closed, the guide passage is disconnected, so that the drilling fluid cannot enter the corresponding cavity, and the support rib is in the fully-closed state.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a switching-over control system based on hydraulic drive, includes connecting sleeve, be provided with casing and lower casing in the connecting sleeve, be provided with the center pin in the connecting sleeve, its characterized in that: the last switching-over structure that is provided with of center pin, reversing mechanism includes switching-over head, switching-over ring gear and ball bearing, the one end of switching-over head with reset spring connects, reset spring's the other end is connected with the reset spring baffle, the outside of switching-over head is inlayed and is equipped with the switching-over ring gear, according to the even radial a plurality of guide ribs that distribute of 30 degrees on the switching-over ring gear, a plurality of guide ribs and the inner wall coupling of casing, the intracavity of switching-over head is provided with the ring channel, set up ball bearing in the ring channel, ball bearing suit is in on the center pin, the outside of casing is provided with the ball sliding sleeve down and with connecting sleeve's inner wall connection.
2. The reversing control system based on the hydraulic drive as claimed in claim 1, wherein an outer valve chamber is arranged in the lower casing, the inner disc valve is connected with the outer valve chamber, a thrust spring is arranged in a chamber of the outer valve chamber, one side of the thrust spring is connected with the inner wall of the chamber of the outer valve chamber, and the other side of the thrust spring is connected with the inner disc valve.
3. The hydraulic drive based reversing control system of claim 1, wherein the inner disc valve is of a disc-shaped configuration.
4. The reversing control system based on hydraulic drive of claim 1, wherein the inner disc valve has a 120 ° arc shaped through hole and cooperates with a high pressure orifice in the outer valve chamber.
5. The reversing control system based on hydraulic drive of claim 1, wherein the bottom end of the outer valve cavity is provided with three holes which are uniformly distributed at 120 degrees and communicated with corresponding slurry injection ports.
6. The reversing control system based on hydraulic drive of claim 1, wherein an annular sealing groove is formed between the reversing mechanism and the outer valve cavity, and an annular sealing ring is embedded in the annular sealing groove.
7. The reversing control system based on hydraulic drive of claim 1, characterized in that the bypass valve includes a bypass valve spool, a bypass valve body, and a bypass valve spring, the bypass valve being disposed on the central shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426068.1A CN111608582B (en) | 2020-05-19 | 2020-05-19 | Reversing control system based on hydraulic drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426068.1A CN111608582B (en) | 2020-05-19 | 2020-05-19 | Reversing control system based on hydraulic drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111608582A true CN111608582A (en) | 2020-09-01 |
| CN111608582B CN111608582B (en) | 2021-11-05 |
Family
ID=72203076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010426068.1A Active CN111608582B (en) | 2020-05-19 | 2020-05-19 | Reversing control system based on hydraulic drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111608582B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937251A (en) * | 1971-11-01 | 1976-02-10 | Vetco Offshore Industries, Inc. | Fluid pressure operated shut off valve apparatus |
| CN2289898Y (en) * | 1996-09-23 | 1998-09-02 | 朱海鸿 | Mini-cup combined sucking cup |
| CN205445462U (en) * | 2015-12-29 | 2016-08-10 | 中石化石油工程技术服务有限公司 | Hydraulic hits broken rock device of marching type that shakes |
| CN110725649A (en) * | 2019-12-09 | 2020-01-24 | 长江大学 | Push-leaning type rotary guiding tool |
-
2020
- 2020-05-19 CN CN202010426068.1A patent/CN111608582B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3937251A (en) * | 1971-11-01 | 1976-02-10 | Vetco Offshore Industries, Inc. | Fluid pressure operated shut off valve apparatus |
| CN2289898Y (en) * | 1996-09-23 | 1998-09-02 | 朱海鸿 | Mini-cup combined sucking cup |
| CN205445462U (en) * | 2015-12-29 | 2016-08-10 | 中石化石油工程技术服务有限公司 | Hydraulic hits broken rock device of marching type that shakes |
| CN110725649A (en) * | 2019-12-09 | 2020-01-24 | 长江大学 | Push-leaning type rotary guiding tool |
Non-Patent Citations (1)
| Title |
|---|
| 王伟: "调制式旋转导向钻井偏心重力稳定平台控制研究", 《中国优秀硕士学位论文全文数据库（电子期刊）工程科技Ⅰ辑》 * |
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| Publication number | Publication date |
|---|---|
| CN111608582B (en) | 2021-11-05 |
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