CN112096328A - Well wall supporting mechanism while drilling in well - Google Patents
Well wall supporting mechanism while drilling in well Download PDFInfo
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- CN112096328A CN112096328A CN202010987936.3A CN202010987936A CN112096328A CN 112096328 A CN112096328 A CN 112096328A CN 202010987936 A CN202010987936 A CN 202010987936A CN 112096328 A CN112096328 A CN 112096328A
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- 238000005553 drilling Methods 0.000 title claims abstract description 52
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 210000005239 tubule Anatomy 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
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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)
- Earth Drilling (AREA)
Abstract
The invention relates to an in-well drilling well wall supporting mechanism, which belongs to the technical field of drilling tools and comprises a shell and a hydraulic supporting component, wherein the hydraulic supporting component is arranged in the shell, the expansion of an elastic hydraulic support is realized by controlling a high-pressure micro pump, the elastic hydraulic support can be in close contact with a well wall when expanded to a certain degree, the in-well drilling well wall supporting mechanism is supported with the well wall, the high-pressure micro pump is controlled to enable the elastic hydraulic support to retract, the in-well drilling well wall supporting mechanism is separated from the well wall, and meanwhile, the pressure of the high-pressure micro pump can be maintained by a micro energy accumulator. Has great innovative significance and wide application range.
Description
Technical Field
The invention belongs to the technical field of drilling tools, and particularly relates to an in-well drilling well wall supporting mechanism for a self-walking self-steering guiding drilling system.
Background
The underground torque self-balancing cabled drilling tool can fundamentally solve the problem of reaction torque harm caused by rotary drilling of a drill column, change the disturbance strength of one-way broken rocks of a drill bit on surrounding rocks, simplify ground drilling equipment, matched tools and process methods, and achieve the purposes of few accidents in a well, low drilling cost, low energy consumption, high drilling efficiency and the like, but can only realize vertical self-weight pressurizing feeding, cannot automatically pressurize and cannot directionally drill.
In order to realize the active pressurization of a drilling tool without a drill rod in a well, the drilling tool in the well has the capability of supporting the well wall, and through research, a well wall supporting mechanism provided by the U.S. NASA in a patent self-propelled deep hole drilling robot adopts a mechanical arm supporting mode to support the well wall, but the drilling tool cannot be mechanically fed due to the fact that the drilling tool is easily blocked by rock debris, specifically, the drilling tool is disclosed in U.S. Pat. No. 4, 7055625, 1; the SEAVO ground entry robot proposed in japan uses an air bag type supporting mechanism and a hole wall for supporting, but the robot can only drill in soft soil or mud, and cannot circulate drilling fluid.
In view of the above, there is a need for a supporting mechanism for an internal drilling tool capable of circulating drilling fluid, which can be in close contact with the well wall when necessary, and can provide reaction force for the internal drilling tool during walking and feeding.
Disclosure of Invention
The invention aims to provide an in-well while-drilling well wall supporting mechanism adaptive to a self-walking self-steering guiding drilling system, which can be in close contact with a well wall when the self-walking self-steering guiding drilling system needs to walk in the well, provides a counter-acting force for feeding a drilling tool, and has a retraction function, so that the upper drilling tool can continue to walk downwards, and the purpose of continuous feeding of the whole drilling system is achieved.
The technical scheme adopted by the invention for realizing the purpose is as follows: a well wall supporting mechanism while drilling in a well comprises a shell and a hydraulic supporting component;
the shell is a cylindrical shell, a hollow channel is arranged in the middle of the shell, an annular groove is formed in the upper portion of the shell, a plurality of inner cavities are circumferentially distributed in the lower portion of the shell, a plurality of side wall grooves are circumferentially distributed in the outer side wall of the shell, a vertical channel is formed between the annular groove and the inner cavities, an L-shaped channel is formed between the annular groove and the side wall grooves, and a plurality of oval through holes are distributed around the hollow channel;
the hydraulic support component comprises an elastic hydraulic support, a high-pressure thin tube, a high-pressure micro pump and a micro energy accumulator, wherein the elastic hydraulic support is an elastic cylindrical cavity with a cavity inside, the elastic cylindrical cavity is filled with pressure liquid, the cavity is fixed in a side wall groove of the shell, and an upper L-shaped pipeline passes through an L-shaped channel; the high-pressure thin tube is a rigid hollow thin tube and is connected with the elastic hydraulic support and the high-pressure micropump; the high-pressure micropump is a cylindrical micropump with high pressure, has the characteristics of small volume, high pressure, stable operation and convenient installation, can realize the functions of pumping and spraying high-pressure liquid, and is arranged in the annular groove of the shell; the miniature energy accumulator is a cylindrical miniature energy storage device and is fixed at the bottom of the inner cavity of the shell; the high-pressure micro pump and the micro energy accumulator are communicated through the high-pressure thin pipe in sequence. The elastic hydraulic support, the high-pressure thin pipe, the high-pressure micro pump and the micro energy accumulator form a continuous pipeline cavity through a pipeline.
Furthermore, it should be understood that the housing is provided with N cavities, N side wall grooves, N vertical channels, N L-shaped channels, 2N oval through holes, and N sets of hydraulic support components, where N is greater than or equal to 2, and in the present invention, N is taken as 3, which is taken as an example and is not intended to be limiting.
Through the design scheme, the invention can bring the following beneficial effects:
the invention is composed of a shell and a hydraulic support component, wherein the hydraulic support component is arranged in the shell, the expansion of an elastic hydraulic support is realized by controlling a high-pressure micro pump, when the elastic hydraulic support expands to a certain degree, the elastic hydraulic support can be in close contact with a well wall, a well wall support mechanism while drilling in the well is supported by the well wall, the high-pressure micro pump is controlled to enable the elastic hydraulic support to retract, the well wall support mechanism while drilling in the well is separated from the well wall, and meanwhile, the pressure of the high-pressure micro pump can be ensured by a micro energy; the self-walking self-steering guiding drilling system can support the well wall when in need of feeding, provides the feeding reaction force of the lower drilling tool, has the retraction function, does not influence the feeding of the upper drilling tool, provides a new thought and direction for the supporting technology in the well or the pipe, and has great innovative significance and wide application range.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to the right, and in which:
FIG. 1 is a top view of an assembled 45 degree of the well wall support mechanism while drilling in a well, which is provided by the invention.
FIG. 2 is a sectional view of an assembly of a well wall support mechanism while drilling in a well according to the present invention.
Fig. 3 is a top view of the housing of the present invention.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a sectional view taken along line B-B of fig. 3.
Fig. 6 is a schematic view showing the operation of the hydraulic support assembly during expansion of the elastic hydraulic support according to the present invention, wherein the dotted arrows indicate the flow direction of the pressure fluid.
Fig. 7 is a schematic view showing the operation of the hydraulic support assembly during the contraction of the elastic hydraulic support according to the present invention, in which the flow direction of the pressure fluid is indicated by the dotted arrows.
FIG. 8 is a diagram of the working process of the borehole wall supporting mechanism while drilling in the well to realize the supporting work in the well.
In the figure: 1-a housing; 2-a hydraulic support assembly; 101-a vertical channel; 102-L-shaped channel; 103-oval through hole; 104-a hollow channel; 105-an annular groove; 106-sidewall recesses; 107-lumen; 201-elastic hydraulic support; 202-high pressure tubule; 203-high pressure micropump; 204-micro accumulator.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. As will be appreciated by those skilled in the art. The following detailed description is illustrative rather than limiting in nature and is not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
As shown in fig. 1 to fig. 7, the borehole wall support mechanism while drilling in a well provided by the invention is composed of a housing 1 and a hydraulic support assembly 2, wherein the hydraulic support assembly 2 comprises an elastic hydraulic support 201, a high-pressure tubule 202, a high-pressure micro pump 203 and a micro accumulator 204;
the casing 1 is a cylindrical shell, a hollow channel 104 is arranged in the middle and is used for a mud circulation mechanism corresponding to a self-walking self-steering guiding drilling system, an annular groove 105 is arranged at the upper part of the casing 1, the space of the annular groove is used for placing a high-pressure tubule 202 and a high-pressure micro pump 203, a plurality of inner cavities 107 are circumferentially distributed at the lower part of the casing 1, the space of the inner cavities is used for placing a micro energy accumulator 204, a plurality of side wall grooves 106 are circumferentially distributed at the outer side wall of the casing 1, the space of the outer side wall grooves is used for placing an elastic hydraulic support 201, a vertical channel 101 is arranged between the annular groove 105 and the inner cavities 107 and is used for passing through a pipeline at the lower part of the high-pressure micro pump 203, an L-shaped channel 102 is arranged between the annular groove 105 and the side wall grooves 106 and is used for passing through, a plurality of oval through holes 103 are distributed around the hollow passage 104 for passing through the cable inside the drilling tool;
the hydraulic support component 2 comprises an elastic hydraulic support 201, a high-pressure thin pipe 202, a high-pressure micro pump 203 and a micro energy accumulator 204, wherein the elastic hydraulic support 201 is an elastic cylindrical cavity with a cavity inside, the elastic cylindrical cavity is filled with pressure liquid and is fixed in a side wall groove 106 of the shell 1, an upper L-shaped pipeline passes through the L-shaped channel 102, and the elastic hydraulic support 201 can expand or contract along with the change of the internal hydraulic and is used for being in close contact with a well wall to support the whole drilling system; the high-pressure thin tube 202 is a rigid hollow thin tube and is connected with the elastic hydraulic support 201 and the high-pressure micro pump 203, and the high-pressure thin tube has the functions of realizing the communication between the cavity of the elastic hydraulic support 201 and the cavity of the high-pressure micro pump 203 and providing a medium channel for the pressure control of the high-pressure micro pump 203 on the elastic hydraulic support 201; the high-pressure micropump 203 is a cylindrical micropump with large pressure, has the characteristics of small volume, high pressure, stable operation and convenient installation, can realize the suction and ejection functions of high-pressure liquid, is arranged in the annular groove 105 of the shell 1, and can eject the high-pressure liquid to expand the elastic hydraulic support 201 and suck away part of the hydraulic force in the elastic hydraulic support 201 to shrink the elastic hydraulic support; the micro energy accumulator 204 is a cylindrical micro energy storage device and is fixed at the bottom of the inner cavity 107 of the shell 1, the micro energy accumulator 204 is communicated with the high-pressure micro pump 203 through the high-pressure thin tube 202, when the mechanism is in a non-working state, the high-pressure micro pump 203 converts the energy of the system into compression energy or potential energy for storage, and when the mechanism works, the pressure is supplemented to the high-pressure micro pump 203, so that the stability of the whole mechanism and the well wall support is ensured;
when the borehole wall supporting mechanism is installed in a well while drilling, the elastic hydraulic support 201, the high-pressure tubule 202, the high-pressure micro pump 203 and the micro accumulator 204 are sequentially and fixedly connected through a pipeline to form a continuous pipeline cavity, it should be understood that the housing is provided with N inner cavities 107, N side wall grooves 106, N vertical channels 101, N L-shaped channels 102, 2N elliptical through holes 103 and N groups of hydraulic support components 2, where N is greater than or equal to 2.
Fig. 6 and fig. 7 are schematic diagrams of the operation of the hydraulic support assembly 2 during the expansion process and the contraction process of the elastic hydraulic support 201 in the present invention, and fig. 8 is a diagram of the operation process of the borehole wall support mechanism while drilling in a well to support the operation in the well, which is described by taking the diagram as an example, and the operation principle and the operation process of the present invention are as follows:
in a non-working state, as shown in a state 1 in fig. 8, the elastic hydraulic support 201 is in a contracted state, the outer wall of the arc surface of the elastic hydraulic support 201 has the same diameter as that of the housing 1, and the micro accumulator 204 is in an energy storage state, when a lower drilling tool needs to be fed, as shown in fig. 6, the high-pressure micro pump 203 injects high-pressure liquid into the elastic hydraulic support 201 through the high-pressure thin tube 202, the elastic hydraulic support 201 gradually expands until the elastic hydraulic support is in close contact with the well wall, as shown in a state 2 in fig. 8, at the moment, the static friction force between the elastic hydraulic support 201 and the well wall provides the reaction force for feeding the lower drilling tool, and meanwhile, the micro accumulator 204 supplements pressure to the high-pressure micro pump 203, so that the pressure in the elastic; after the feeding action is completed, as shown in fig. 7, the high-pressure micro pump 203 pumps the high-pressure liquid inside the elastic hydraulic support 201 through the high-pressure tubule 202, at this time, the elastic hydraulic support 201 is decompressed and contracted, and the whole mechanism returns to the non-working state again.
Claims (4)
1. The utility model provides a wall of a well supporting mechanism is bored while drilling in well which characterized in that: the hydraulic support assembly comprises a shell (1) and a hydraulic support assembly (2), wherein the hydraulic support assembly (2) comprises an elastic hydraulic support (201), a high-pressure thin pipe (202), a high-pressure micro pump (203) and a micro accumulator (204);
the casing (1) is a cylindrical shell, a hollow channel (101) is arranged in the middle of the casing (1), an annular groove (105) is formed in the upper portion of the casing (1), a plurality of inner cavities (107) are circumferentially distributed in the lower portion of the casing (1), a plurality of side wall grooves (106) are circumferentially distributed on the outer side wall of the casing (1), a vertical channel (101) is arranged between the annular groove (105) and the inner cavities (107), an L-shaped channel (102) is arranged between the annular groove (105) and the side wall grooves (106), a plurality of oval through holes (103) are circumferentially distributed around the hollow channel (101), an elastic hydraulic support (201) is fixed in the side wall grooves (106) of the casing (1), and the high-pressure tubule (202) is a rigid hollow tubule and is used for connecting the elastic hydraulic support (; the high-pressure micropump (203) is arranged in an annular groove (105) of the shell (1); the micro energy accumulator (204) is fixed at the bottom of the inner cavity (107) of the shell (1), and the high-pressure micro pump (203) is communicated with the micro energy accumulator (204) through the high-pressure thin pipe (202) in sequence.
2. The well-drilling well wall supporting mechanism according to claim 1, wherein: the elastic hydraulic support (201) is an elastic cylindrical cavity with a cavity inside, and the cavity is filled with pressure fluid.
3. The well-drilling well wall supporting mechanism according to claim 1, wherein: the number of the upper inner cavity (107), the side wall groove (106), the vertical channel (101), the L-shaped channel (102) and the hydraulic support component (2) of the shell (1) is the same and is N, N is larger than or equal to 2, and the number of the oval through holes (103) is 2N.
4. The well-drilling well wall supporting mechanism according to claim 1, wherein: the outer diameter of the shell (1) is the same as that of the self-walking self-steering guiding drilling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010987936.3A CN112096328A (en) | 2020-09-18 | 2020-09-18 | Well wall supporting mechanism while drilling in well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010987936.3A CN112096328A (en) | 2020-09-18 | 2020-09-18 | Well wall supporting mechanism while drilling in well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112096328A true CN112096328A (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010987936.3A Pending CN112096328A (en) | 2020-09-18 | 2020-09-18 | Well wall supporting mechanism while drilling in well |
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| Country | Link |
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| CN (1) | CN112096328A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658360A (en) * | 2022-05-09 | 2022-06-24 | 中国铁建重工集团股份有限公司 | Anti-rotation supporting device and directional core drill |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6230557B1 (en) * | 1998-08-04 | 2001-05-15 | Schlumberger Technology Corporation | Formation pressure measurement while drilling utilizing a non-rotating sleeve |
| CN1372065A (en) * | 2001-02-23 | 2002-10-02 | 胜利石油管理局钻井工艺研究院 | Modulation type offset leading tool |
| CN102619470A (en) * | 2012-04-24 | 2012-08-01 | 中国石油天然气集团公司 | Method for controlling transverse vibration of drill string in process of reaming while drilling |
| CN106050144A (en) * | 2016-08-08 | 2016-10-26 | 裴绪建 | Mechanical rotation guide type drilling tool |
| CN106089085A (en) * | 2016-08-10 | 2016-11-09 | 裴绪建 | A kind of machinery vertical drilling tool |
| CN213627495U (en) * | 2020-09-18 | 2021-07-06 | 吉林大学 | Well wall supporting mechanism while drilling in well |
-
2020
- 2020-09-18 CN CN202010987936.3A patent/CN112096328A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6230557B1 (en) * | 1998-08-04 | 2001-05-15 | Schlumberger Technology Corporation | Formation pressure measurement while drilling utilizing a non-rotating sleeve |
| CN1372065A (en) * | 2001-02-23 | 2002-10-02 | 胜利石油管理局钻井工艺研究院 | Modulation type offset leading tool |
| CN102619470A (en) * | 2012-04-24 | 2012-08-01 | 中国石油天然气集团公司 | Method for controlling transverse vibration of drill string in process of reaming while drilling |
| CN106050144A (en) * | 2016-08-08 | 2016-10-26 | 裴绪建 | Mechanical rotation guide type drilling tool |
| CN106089085A (en) * | 2016-08-10 | 2016-11-09 | 裴绪建 | A kind of machinery vertical drilling tool |
| CN213627495U (en) * | 2020-09-18 | 2021-07-06 | 吉林大学 | Well wall supporting mechanism while drilling in well |
Non-Patent Citations (1)
| Title |
|---|
| 李子丰;杨海滨;许春田;陈小元;刘小霞;: "定向井滑动钻进送钻原理与技术", 天然气工业, no. 12, 25 December 2013 (2013-12-25) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658360A (en) * | 2022-05-09 | 2022-06-24 | 中国铁建重工集团股份有限公司 | Anti-rotation supporting device and directional core drill |
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