CN112031656B - Long broken area wall of a well supporting tool in shallow layer - Google Patents
Long broken area wall of a well supporting tool in shallow layer Download PDFInfo
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- CN112031656B CN112031656B CN202010439928.5A CN202010439928A CN112031656B CN 112031656 B CN112031656 B CN 112031656B CN 202010439928 A CN202010439928 A CN 202010439928A CN 112031656 B CN112031656 B CN 112031656B
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- 229920001971 elastomer Polymers 0.000 claims abstract description 39
- 230000007704 transition Effects 0.000 claims description 16
- 239000011435 rock Substances 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 210000000078 claw Anatomy 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 25
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 13
- 239000012530 fluid Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010187 selection method Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000001687 destabilization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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Classifications
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
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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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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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)
- Pipe Accessories (AREA)
Abstract
The invention discloses a shallow long broken belt well wall supporting tool. The support device comprises a pipe body, a support rubber plug arranged in an inner cavity of the pipe body and a well wall support body arranged outside the pipe body, wherein a section of well wall support body slideway is arranged on the inner wall of the well wall support body, a support force arm and an elastic body matched with the support force arm are arranged in the well wall support body slideway, and a support rod radially extending into the inner cavity of the pipe body is arranged on the support force arm; the supporting rubber plug can push the supporting rod to move so that the supporting force arm acts and the well wall supporting body is expanded. The invention has the beneficial effects that: the broken zone around the borehole can be stabilized, and the safety of subsequent drilling work is realized.
Description
Technical Field
The invention relates to an oil drilling tool for oil and gas drilling, in particular to a shallow long broken belt well wall supporting tool.
Background
In the process of oil and gas drilling, a karst cave or a broken zone stratum is often drilled in a front stratum, once the stratum is uncovered, the well wall is generally broken and collapsed, and complexity and accidents often occur at the place; in the caused underground complex conditions, the drilling tool is slightly stuck and blocked, and serious accidents such as drilling tool breakage, drilling tool burying and the like occur, so that the construction safety and progress are seriously influenced, and the key for realizing safe, efficient and high-quality drilling is realized by performing technical treatment on a broken zone.
The existing method for treating the shallow long broken zone mainly comprises the following three methods: the first type is to adjust the drilling fluid performance, and the method mainly starts from the stability of the well wall and realizes the maintenance of the stability of the well wall by adjusting the performance of the drilling fluid; the second type is a cement plug-beating stabilizing and crushing zone, and cement slurry is injected into a shaft and is solidified to stabilize the shaft wall; and the third type is a strong drilling process, after strong drilling, the well is continuously opened to ensure that the well shaft is unobstructed, and then the well is placed into a casing to fix the well so as to realize well wall stability.
The three types of model selection methods have the characteristics, but the field processing time is long, the implementation effect is poor, and the actual field problem cannot be really solved; the first method for adjusting the performance of the drilling fluid comprises the following steps: when a shallow long broken zone is drilled, vicious leakage is often caused, shaft circulation cannot be established, and a borehole is always in a destabilization state; the second method is a method for fixing a broken belt by a cement plug: the cement plug is diffused to the periphery after entering the bottom borehole and cannot be maintained in the borehole; the third method is a strong drilling process: after the stratum in the broken zone is drilled strongly, broken stones around the well wall continuously drop towards the center of the well, drilling tools are blocked, drilling tools are suppressed and the like are frequently carried out, no broken stones are accumulated in the well through drifting, and a casing cannot be lowered into the well, so that a key problem, namely the main property of the broken zone, is neglected due to the three types of model selection methods: the well drilling safety drilling tool is strong in connectivity and poor in stability, aiming tools can be developed to effectively solve the problem of a shallow long fracture zone, so that the stability of the well bore fracture zone is improved, and the safe drilling work of the lower drilling construction is realized.
Disclosure of Invention
The invention aims to provide a shallow long broken belt well wall supporting tool which can stabilize a broken belt around a well hole and realize the safety of subsequent drilling work.
In order to solve the technical problem, the shallow long crushing belt well wall supporting tool comprises a pipe body, a supporting rubber plug arranged in an inner cavity of the pipe body and a well wall supporting body arranged outside the pipe body, wherein a section of well wall supporting body slide way is arranged on the inner wall of the well wall supporting body; the supporting rubber plug can push the supporting rod to move so that the supporting force arm acts and the well wall supporting body is expanded.
The inner cavity of the tube body forms a trapezoidal transition channel of a trapezoidal pillar structure, the diameter of the top of the trapezoidal transition channel is larger than the maximum outer diameter of the supporting rubber plug, and the diameter of the middle lower part of the trapezoidal transition channel is smaller than the maximum outer diameter of the supporting rubber plug.
The inner of bracing piece radially stretches into the center of body, and the outer end cooperation of bracing piece is installed in the spout that supports the arm of force, the inner of bracing piece can support under the extrusion of plug along body radial movement, simultaneously bracing piece outer end promotes in the spout that supports the arm of force that the relative slip promotes to support the arm of force and expands outward.
The lower extreme of the support arm of force with body swing joint, the upper end and the elastomer of the support arm of force are connected and make its upper end lean on under the effect of elastic component and press on the surface at wall of a well supporter slide, the upper end of the support arm of force can be followed wall of a well supporter slide downstream and promoted the radial grow of wall of a well supporter.
The elastic body is attached to the pipe body and connected with the supporting force arm, and the initial state of the elastic body is a free extension state; the supporting rubber plug can be attached to the surface of the pipe body by the supporting arm under the elastic action of the elastic body after completely passing through the supporting rod.
The upper portion of supporting the plug is the cylinder, and its diameter is greater than the diameter of the trapezoidal transition passageway of lower part in the body, and the lower part of supporting the plug is trapezoidal cylinder, the inside of bracing piece is provided with the direction inclined plane, the gradient of the trapezoidal cylinder of supporting the plug with the inclination on the direction inclined plane of bracing piece is the same.
And a supporting and limiting component for limiting the well wall supporting body and a body supporting component for supporting the well wall supporting body are arranged in the well wall supporting body.
The supporting and limiting component comprises unidirectional movement clamping teeth and a unidirectional movement limiting cavity matched with the unidirectional movement clamping teeth, and the unidirectional movement clamping teeth can move unidirectionally and cannot move back in the unidirectional movement limiting cavity.
The body supporting member comprises a moving body and a moving cavity matched with the moving body, and the moving body can move circularly in the moving cavity to change the inner diameter of the moving body;
and the upper part of the well wall supporting body is provided with a stabilizing member which can fix the well wall supporting body on the outer surface of the pipe body.
And the outer wall of the upper part of the well wall supporting body is provided with rock wall embedding claws of a conical structure.
Compared with the prior art, the invention has the beneficial effects that:
through the arrangement of the supporting rubber plug, the circular supporting rod, the supporting force arm and the well wall supporting body, the circular supporting rod is pushed to move outwards in the radial direction to drive the supporting force arm to push the well wall supporting body to expand outwards so as to enlarge the diameter of the well wall supporting body in the process that the supporting rubber plug moves downwards in the pipe body in the axial direction; through the unidirectional movement clamping teeth and the unidirectional movement limiting cavities in the supporting and limiting members arranged at the upper part and the lower part of the well wall supporting body, in the radial expansion process of the well wall supporting body, the unidirectional movement clamping teeth move unidirectionally and can not move back in the unidirectional movement limiting cavities, so that the inner diameter of the well wall supporting body can only be gradually increased without contracting after the supporting force arms are separated; the supporting force arm slides along the slide way direction in the process of supporting the borehole wall supporting body to expand outwards through the borehole wall supporting body slide way arranged in the borehole wall supporting body; the stabilizing members are arranged at the top and the bottom of the well wall supporting body, are non-elastic bodies and can be broken after a small amount of deformation, so that the well wall supporting body is stably fixed on the pipe body at the initial stage without relative displacement; the rock wall embedded claw teeth arranged on the outer wall of the well wall supporting body are used for realizing that the rock wall embedded claw teeth are embedded into the well wall at a well section with a slightly larger outer diameter of the well wall to stabilize the well wall supporting body without axial sliding after the well wall supporting body is completely expanded; through the setting of the elastomer of supporting the arm of force connection, realize supporting behind the plug through circular bracing piece, the elastomer will support the arm of force through elastic deformation shrink and pull back firm on the body, can stabilize broken area around the well from this, realize the security of follow-up drilling work.
Drawings
FIG. 1 is a schematic view of a vertical section structure of the shallow long crushing belt well wall supporting tool of the invention;
FIG. 2 is a top radial cross-sectional view of the shallow long breaker belt well wall support tool of the present invention;
FIG. 3 is a middle radial cross-sectional view of the shallow long breaker belt well wall support tool of the present invention;
FIG. 4 is a bottom radial cross-sectional view of the shallow long breaker belt well wall support tool of the present invention.
In the figure, 1, a pipe body; 2. a trapezoidal transition channel; 3. a support bar; 4. supporting the force arm; 5. an elastomer; 6. supporting the rubber plug; 7. a well wall support body; 8. a well wall support body slideway; 9. a stabilizing member; 10. the rock wall is embedded into the claw teeth; 11. a support limit member; 12. the clamping teeth are moved in one direction; 13. a unidirectional movement limiting cavity; 14. a body support member; 15. a moving body; 16. the chamber is moved.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
As shown in the figure, the shallow long crushing belt well wall supporting tool comprises a pipe body 1, a supporting rubber plug 6 arranged in the inner cavity of the pipe body 1 and a well wall supporting body 7 arranged outside the pipe body, wherein a trapezoidal transition channel 2 is formed in the inner cavity of the pipe body 1, the trapezoidal transition channel 2 is a trapezoidal table column, the top diameter of the trapezoidal transition channel 2 is large, the bottom diameter of the trapezoidal transition channel is small, the top diameter of the trapezoidal transition channel 2 is larger than the maximum outer diameter of the supporting rubber plug 6, the bottom diameter of the trapezoidal transition channel 2 is slightly smaller than the maximum outer diameter of the supporting rubber plug 6, fluid can flow and the supporting rubber plug can vertically move, a supporting and limiting component 11 for limiting the well wall supporting body and a body supporting component 14 for supporting the middle part of the well wall supporting body are arranged in the well wall supporting body 7, a section of well wall supporting body slide way 8 is arranged on the inner wall supporting body 7, a supporting force arm 4 and an elastic body 5 matched with the supporting force arm are arranged in the well wall supporting body slide way, the well wall supporting body slide way 8 of the well wall supporting body 7 is used for supporting the force arm to vertically move up and down for supporting, in other words, the well wall supporting slide way provides a sliding place for the supporting force arm, the upper part of the well wall supporting body slide way can stably support the force arm without being separated, but the lower part of the well wall supporting body slide way can separate the supporting force arm from the slide way, so that the supporting force arm 4 can slide along the direction of the well wall supporting body slide way 8 in the process of expanding the supporting well wall supporting body to meet the requirement of expanding the well wall supporting body, in particular, the lower end of the supporting force arm 4 is movably connected with the pipe body 1, the upper end of the supporting force arm 4 is connected with the elastic body, the upper end of the supporting force arm is close to the well wall supporting body slide way, and the upper end moves downwards along the well wall supporting body slide way and pushes the supporting body to radially enlarge in the expanding supporting process, the elastic body 5 is attached to the pipe body and connected with the supporting force arm 4, the initial state is a free extension state, the elastic body is in a stretching state in the process of expanding the supporting force arm outwards, when the supporting rubber plug completely passes through the circular supporting rod, the elastic force provided by the elastic body in the stretching state is enough to pull the supporting force arm back to be close to the pipe body, therefore, after the supporting rubber plug 7 passes through the elastic body 5 connected with the supporting force arm 4, the elastic body 5 pulls the supporting force arm 4 back to be firmly fixed on the pipe body through elastic deformation contraction, the requirement of timely contraction of the pipe body supporting piece is met, the supporting force arm 4 is provided with the circular supporting rod 3 which radially extends into the inner cavity of the pipe body, in the actual design, the radial outward movement amount of the circular supporting rod 4 is controlled by setting the length of the circular supporting rod 4, the design of the outward expansion diameter of the well wall supporting body is realized, the requirement of the outward expansion size of the supporting body is met, and the drawing shows that, the inner end of the circular support rod 3 radially extends into the center of the pipe body, the outer end of the circular support rod 3 is installed in a sliding chute of a support force arm in a matched mode, the inner end of the circular support rod 3 can move radially along the pipe body under the extrusion of a support rubber plug, meanwhile, the outer end of the circular support rod slides relatively in the sliding chute of the support force arm to push the support force arm to expand outwards, it needs to be stated that the circular support rod can only slide radially and cannot rotate, therefore, the support rubber plug 6 can push the support rod 3 to move to enable the support force arm to move and further enable the well wall support body 7 to expand, and through the structural design of the support rubber plug 6, the circular support rod 3, the support force arm 4 and the well wall support body 7, the circular support rod 3 can be pushed to move radially outwards to drive the support force arm 4 to push the support body 7 to expand outwards to expand the diameter of the well wall in the process that the support rubber plug 6 moves downwards in the pipe body 1 axially, the requirement of supporting the well wall is met.
Furthermore, the upper part of the supporting rubber plug 6 is a cylinder, the diameter of the cylinder is slightly larger than that of the trapezoidal transition channel at the middle lower part of the pipe body 1, the lower part of the supporting rubber plug 6 is a trapezoidal cylinder, a guide inclined plane is arranged inside the supporting rod 3, the gradient of the trapezoidal cylinder of the supporting rubber plug 6 is the same as the inclination angle of the guide inclined plane of the supporting rod, and under the action of hydraulic power, the supporting rubber plug vertically and gradually slides downwards in the pipe body and enters the middle part of the pipe body to push the circular supporting rod to move radially outwards.
Still further, fig. 2 isbase:Sub>A schematic diagram ofbase:Sub>A-base:Sub>A sectional structure of fig. 1, fig. 4 isbase:Sub>A schematic diagram ofbase:Sub>A C-C sectional structure of fig. 1, as can be seen from fig. 2 and fig. 4, each of the two supporting and limiting members 11 includes an upper supporting and limiting member supported on the upper portion of the well wall support 7 andbase:Sub>A lower supporting and limiting member supported on the lower portion of the well wall support 7, and each of the two supporting and limiting members 11 includesbase:Sub>A unidirectional moving detent 12 andbase:Sub>A unidirectional moving detent cavity 13 engaged with the unidirectional moving detent, during radial expansion of the well wall support, the unidirectional moving detent 12 can move unidirectionally in the unidirectional moving detent cavity, during diameter expansion of the well wall support, the unidirectional moving detent can only move and cannot move outward of the cavity, so that the inner diameter of the well wall support can only gradually increase without contracting after separation of the supporting force arm, thereby meeting the requirement that the diameter of the well wall support does not change after completion of supporting, fig. 3 isbase:Sub>A schematic diagram ofbase:Sub>A B-B sectional structure of fig. 1, as can be seen from fig. 3, the body supporting member 14 includesbase:Sub>A moving body 15 andbase:Sub>A moving cavity 16 engaged with the moving body, andbase:Sub>A moving cavity 16, and the moving body 15 can move circularly to change the inner diameter of the moving cavity 16.
Furthermore, the upper part and the lower part of the well wall support body 7 are provided with stabilizing members 9 which can fix the well wall support body on the outer surface of the pipe body, the stabilizing members cannot be deformed and are in a tightening state in an initial state, the well wall support body is fixed on the pipe body stably, when the diameter of the well wall support body is changed, the stabilizing members are broken immediately, specifically, the stabilizing members 9 arranged at the top and the bottom of the well wall support body 7 are non-elastic bodies and can be broken after a small amount of deformation, so that the well wall support body 7 is stably fixed on the pipe body 1 in an initial stage without relative displacement, and in the initial stage of a supporting process, the stabilizing members 9 are broken and cracked immediately under the action of an external expansion force, thereby meeting the requirement that the well wall support body is stably attached to the pipe body in the initial state; for a slightly smaller well section of the well bore, the well wall supporting body 7 is externally squeezed to crush the gravel and expand in the supporting process, and after the supporting is finished, the well wall supporting body 7 is always subjected to the pressure of the gravel around the well bore, so that the temperature adhesion of the well wall supporting body is ensured; for a slightly larger well section of a well bore, a plurality of rock wall embedding claws 10 with conical structures are arranged on the outer wall of the upper part of the well wall support body 7, and the rock wall embedding claws can deform downwards and cannot deform upwards; after the diameter of the well wall supporting body is expanded, the well wall supporting body is embedded into the rock wall, and after the supporting rod is separated from the well wall supporting body, the rock wall cutting claw drives the well wall supporting body to be close to the rock wall, so that after the well wall supporting body is completely expanded, the rock wall embedding claw 10 is embedded into the well wall at a well section with a slightly larger outer diameter of the well wall to stabilize the well wall supporting body without axial sliding, and the requirement that the well wall supporting body is stably attached to the well wall after being supported is met
The invention discloses a gravel belt well wall supporting method of a shallow long crushing belt well wall supporting tool, which comprises the following steps:
step one, carrying out reaming or drifting on a gravel belt well;
step two, adjusting the length of the round supporting rod 4, combining the drilling tools and putting the combined drilling tools into the well bottom;
step three, fully circulating the well;
putting a support rubber plug 6 into the pipe column, and slowly injecting drilling fluid to push the support rubber plug 6 to move downwards;
step five, in the process that the supporting rubber plug 6 begins to extrude the circular supporting rod 3, the pump pressure is gradually increased, the circular supporting rod 3 radially pushes the supporting force arm 4 outwards, the supporting force arm 4 moves downwards along the well wall supporting body slide rail 8, the stabilizing member 9 is broken, the well wall supporting body 7 gradually expands outwards to push gravel around the well hole to move outwards, and the rock wall embedding claws 10 are gradually embedded into the gravel;
step six, the supporting rubber plug 6 gradually moves downwards to pass through the circular supporting rod 3, the well wall supporting body 7 stops expanding outwards, and the elastic body 5 contracts and pulls the supporting force arm 4 to abut against the pipe body;
step seven, the supporting rubber plug repeats the step five and the step six and supports the tool through a plurality of well walls;
and step eight, pulling out the drill after full circulation.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (10)
1. The utility model provides a long broken tape wall of a well supporting tool in shallow layer which characterized in that: the pipe comprises a pipe body (1), a supporting rubber plug (6) arranged in an inner cavity of the pipe body (1) and a well wall supporting body (7) arranged outside the pipe body, wherein a section of well wall supporting body slideway (8) is arranged on the inner wall of the well wall supporting body (7), a supporting force arm (4) and an elastic body (5) matched with the supporting force arm are arranged in the well wall supporting body slideway (8), and a supporting rod (3) radially extending into the inner cavity of the pipe body is arranged on the supporting force arm (4); the supporting rubber plug (6) can push the supporting rod (3) to move so as to enable the supporting force arm to act and further enable the well wall supporting body (7) to expand; the lower extreme that supports arm of force (4) with body (1) swing joint, the upper end and the elastomer of the support arm of force (4) are connected and make its upper end lean on under the effect of elastic component and press on the surface at wall of a well supporter slide, the upper end that supports arm of force (4) can follow wall of a well supporter slide downstream and promote the radial grow of wall of a well supporter.
2. The shallow long breaker belt well wall support tool of claim 1, characterized in that: the inner cavity of the pipe body (1) forms a trapezoidal transition channel (2) of a trapezoidal pillar structure, the diameter of the top of the trapezoidal transition channel (2) is larger than the maximum outer diameter of the supporting rubber plug (6), and the diameter of the middle lower part of the trapezoidal transition channel (2) is smaller than the maximum outer diameter of the supporting rubber plug (6).
3. The shallow long breaker belt well wall support tool of claim 1 or 2, wherein: the inner of bracing piece (3) radially stretches into the center of body, and the outer end cooperation of bracing piece (3) is installed in the spout that supports the arm of force, the inner of bracing piece (3) can support under the extrusion of plug along body radial movement, simultaneously the bracing piece outer end promotes in the spout that supports the arm of force that relative slip supports the arm of force and expands outward.
4. The shallow long breaker belt well wall support tool of claim 3, characterized in that: the elastic body (5) is attached to the pipe body and connected with the supporting force arm (4), and the initial state of the elastic body is a free extension state; the supporting rubber plug (6) completely passes through the supporting rod and can enable the supporting force arm to be attached to the surface of the pipe body under the elastic action of the elastic body.
5. The shallow long breaker belt well wall support tool of claim 4, wherein: the upper portion of supporting plug (6) is the cylinder, and its diameter is greater than the diameter of the well lower part of the trapezoidal transition passageway of body (1), the lower part of supporting plug (6) are trapezoidal cylinder, the inside of bracing piece (3) is provided with the direction inclined plane, the gradient of the trapezoidal cylinder of supporting plug (6) with the inclination on the direction inclined plane of bracing piece is the same.
6. The shallow long breaker belt well wall support tool of claim 1, 2, 4 or 5, wherein: and a supporting and limiting component (11) for limiting the well wall supporting body and a body supporting component (14) for supporting the well wall supporting body are arranged in the well wall supporting body (7).
7. The shallow long breaker belt well wall support tool of claim 6, wherein: the supporting and limiting component (11) comprises one-way movement clamping teeth (12) and one-way movement limiting cavities (13) matched with the one-way movement clamping teeth, and the one-way movement clamping teeth (12) can move in the one-way movement limiting cavities in a one-way manner and cannot move back.
8. The shallow long breaker belt well wall support tool of claim 7, wherein: the body supporting member (14) comprises a moving body (15) and a moving cavity (16) matched with the moving body, and the moving body (15) can move circularly in the moving cavity (16) to change the inner diameter of the moving body.
9. The shallow long breaker belt well wall support tool of claim 1, 2, 4, 5, 7 or 8, wherein: and a stabilizing member (9) capable of fixing the well wall support body on the outer surface of the pipe body is arranged at the upper part of the well wall support body (7).
10. The shallow long breaker belt well wall support tool of claim 9, characterized in that: and the outer wall of the upper part of the well wall supporting body (7) is provided with rock wall embedding claws (10) with a conical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439928.5A CN112031656B (en) | 2020-05-22 | 2020-05-22 | Long broken area wall of a well supporting tool in shallow layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010439928.5A CN112031656B (en) | 2020-05-22 | 2020-05-22 | Long broken area wall of a well supporting tool in shallow layer |
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| CN112031656A CN112031656A (en) | 2020-12-04 |
| CN112031656B true CN112031656B (en) | 2022-11-15 |
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| CN107023266A (en) * | 2017-06-08 | 2017-08-08 | 广汉川亿石油科技有限公司 | A kind of drilling well stabilizer of double end Junk prevention bit freezing |
| CN110295863A (en) * | 2019-07-03 | 2019-10-01 | 王少斌 | A kind of double-deck eight arms telescoping ram |
| CN110925001A (en) * | 2019-11-29 | 2020-03-27 | 华北水利水电大学 | Buffer protection device for preventing anchor cable from being ejected due to failure |
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| CN112031656A (en) | 2020-12-04 |
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