CN110847822B - Remote control variable diameter stabilizer - Google Patents
Remote control variable diameter stabilizer Download PDFInfo
- Publication number
- CN110847822B CN110847822B CN201911341658.8A CN201911341658A CN110847822B CN 110847822 B CN110847822 B CN 110847822B CN 201911341658 A CN201911341658 A CN 201911341658A CN 110847822 B CN110847822 B CN 110847822B
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- driving
- sliding surface
- spring
- mandrel
- combined
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 25
- 238000007906 compression Methods 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 230000008602 contraction Effects 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 239000011148 porous material Substances 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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
- E21B7/10—Correction of deflected boreholes
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a remote control variable diameter stabilizer, which is characterized in that: the upper shell inner wall is provided with 4 combined sliding grooves which are uniformly distributed along the upper shell inner wall circumference, the upper mandrel is provided with 4 driving compression bars which are uniformly distributed along the upper mandrel circumference, the upper end of each combined sliding groove is used for supporting and limiting a spring, and each combined sliding groove interacts with each driving compression bar; the combined sliding groove is provided with an upper end arc sliding surface, a long straight sliding surface, a transitional end surface, a middle end arc sliding surface, a lower end surface, a side wall sliding surface, an upper end surface, a transitional surface, a long end surface and a middle end surface, the driving pressing rod is provided with a driving end head, a driving rod and a reinforcing pulling rod, and the spring, the combined sliding groove and the driving pressing rod jointly form a reducing mechanism for controlling the extension or contraction of the radial piston. The invention can be used for changing the lower drilling tool combination structure and realizing the control of the well track on the basis.
Description
Technical Field
The invention relates to an oil and gas well drilling device, in particular to a remote control variable diameter stabilizer, and belongs to the technical field of mechanical engineering.
Background
The stabilizer is required to be used in the drilling process to realize the change of different types of drilling tool combinations, so that the control of the borehole track is realized through the inclination increase, the inclination stabilization or the inclination decrease of the well section. The conventional lower tool assembly is typically changed by means of conventional stabilizers, i.e. when a change in the type of tool assembly is required, the drill string is tripped out and the required conventional stabilizers are installed before being re-lowered into the well. When the type of drilling tool assembly needs to be changed each time, at least one tripping operation is required, which is time consuming and costly for the drilling operation. The variable diameter stabilizer can realize the aim of controlling the track of the borehole without tripping through underground diameter variation, and can greatly improve the drilling efficiency when being used for deep wells or directional wells and the like. Patent ZL 201510705899.1 discloses a remote-controlled variable-diameter stabilizer, which is based on a ball-point pen structure, replaces a widely used cam body structure and has certain advancement.
The core of the remote-controlled variable diameter stabilizer is, of course, the structure of the variable diameter mechanism. The present invention is directed to a variable diameter stabilizer of another construction for use in controlling wellbore trajectory in oil and gas drilling.
Disclosure of Invention
The invention aims to achieve the aim, and particularly provides a remote-control variable-diameter stabilizer which is used for controlling the well track of an oil and gas well.
In order to achieve the above purpose, the technical scheme adopted by the invention for solving the technical problem is as follows:
A remote control variable diameter stabilizer is composed of an upper shell, a pressing piston, a sealing ring, an upper mandrel, a spring, a combined sliding groove, a driving compression bar, a middle mandrel, a lower shell and an inclined surface body, wherein the radial piston, the lower mandrel, an oil filling hole pin, an exhaust hole pin, a balance piston, a filter plate, a clamping spring, a choke plug, a supporting pin, a stop pin, an upper pore plate, a lower pore plate, a mushroom inner core, a mushroom outer ring, a sleeve, a disc spring and a conversion joint, the upper shell is in threaded connection with the lower shell, the lower shell is in threaded connection with the conversion joint, the pressing piston is in threaded connection with the upper mandrel, the upper mandrel is in threaded connection with the middle mandrel, the lower mandrel is in threaded connection with the lower pore plate, and the upper pore plate is in threaded connection with the lower pore plate, and is characterized in that: the upper shell inner wall is provided with 4 combined sliding grooves which are uniformly distributed along the upper shell inner wall circumference, the upper mandrel is provided with 4 driving compression bars which are uniformly distributed along the upper mandrel circumference, the upper end of each combined sliding groove is used for supporting and limiting a spring, and each combined sliding groove interacts with each driving compression bar; the combined sliding groove is provided with an upper end arc sliding surface, a long straight sliding surface, a transitional end surface, a middle end arc sliding surface, a lower end surface, a side wall sliding surface, an upper end surface, a transitional surface, a long end surface and a middle end surface, the driving pressing rod is provided with a driving end head, a driving rod and a reinforcing pulling rod, and the spring, the combined sliding groove and the driving pressing rod jointly form a reducing mechanism for controlling the extension or contraction of the radial piston.
The method for remotely controlling the variable diameter stabilizer is characterized by comprising the following steps of: the initial state of the reducing mechanism is that the driving end is positioned at the top end of the upper arc sliding surface, and the radial piston is in a contracted state at the moment; when the pump is started for the first time, the drilling fluid drives the piston to drive the upper mandrel to move downwards so as to drive the reducing mechanism to execute reducing operation, and the radial piston extends outwards: in the process that the radial piston is changed from a contracted state to an extended state, the driving compression bar slides downwards along the combined sliding groove, the driving end head slides along the upper arc sliding surface to the long straight sliding surface to slide downwards continuously, the pump is stopped at the moment, the upper mandrel is driven to move upwards under the action of the restoring force of the spring, and the driving end head slides upwards to fall into the transition surface through the middle arc sliding surface and is blocked by the transition end surface, so that the spring is in a compressed state at the moment; when the pump is started for the second time, the upper mandrel is driven by the piston to further compress the spring in a compressed state, the driving end acts on the lower end arc sliding surface and slides downwards to the side wall sliding surface along the lower end arc sliding surface, the driving end falls into the long end surface due to the restoring force generated by deformation of the driving pressure rod, the fluid pressure is reduced at the moment, the driving end moves upwards along the side wall sliding surface under the action of the restoring force of the spring, when the driving end slides upwards to the top end of the upper end arc sliding surface, the restoring force of the driving pressure rod enables the driving end to rebound to the middle end surface and be blocked by the upper end surface, and at the moment, the driving end is positioned at the top end of the upper end arc sliding surface, so that one cycle is completed.
Compared with the prior art, the invention has the following beneficial effects: (1) The reducing mechanism of the remote control variable-diameter stabilizer is realized mainly by the interaction between the driving compression bar and the combined sliding groove, and the structure is convenient to operate; (2) According to the invention, when the driving end on the driving compression bar is positioned at different positions, different radial piston states are corresponding, so that the position of the driving end in the combined sliding groove can be judged by designing the size of the combined sliding groove, and the state of the stabilizer is judged.
Drawings
FIG. 1 is a schematic illustration of the structure of the present invention when the radial piston is in a contracted state;
FIG. 2 is a schematic view of the structure of the combined chute and the driving compression bar of the present invention when interacting with each other;
FIG. 3 is a schematic view of another structure of the combined chute of the present invention when interacting with the driving compression bar;
FIG. 4 is a top view of the combined chute of the present invention interacting with the driving plunger:
FIG. 5 is a schematic view of a driving plunger disposed on an upper spindle according to the present invention;
Fig. 6 is a schematic structural diagram of a combined chute according to the present invention:
FIG. 7 is a schematic diagram of the structure of the driving compression bar and the combined chute when the driving end on the driving compression bar slides into the middle end surface and the radial piston is in a contracted state;
FIG. 8 is a schematic diagram of the structure of the driving compression bar and the combined chute when the driving end on the driving compression bar slides into the transition surface and is in a radially extended state;
fig. 9 is a schematic structural view of the driving compression bar and the combined chute in the process of changing the radial piston from extending to retracting when the driving end on the driving compression bar slides upwards along the long end face.
In the figure: 1. the piston assembly includes an upper housing 2, a piston, 3, a seal ring, 4, an upper spindle, 5, a spring, 6, a combination runner, 6a, an upper arcuate slide, 6b, a long straight slide, 6c, a transition end face, 6d, a middle arcuate slide, 6e, a lower arcuate slide, 6f, a lower end face, 6g, a sidewall slide, 6h, an upper end face, 6i, a transition face, 6i, a long end face, 6k, a middle end face, 7, a drive ram, 7a drive head, 7b, 7c, a reinforcement ram, 8, a middle spindle, 9, a lower housing, 10, a beveled body, 11, a radial piston, 12, a lower spindle, 13, a filler pin, 14, a vent pin, 15, a balance piston, 16, a filter plate, 17, a snap spring, 18, a bulkhead, 19, a support pin, 20, a stop pin, 21, an upper orifice plate, 22, a lower orifice plate, 23, a mushroom core, 24, an outer housing, 25, a sleeve, 26, a disk, and a transition joint.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 9, a remote control variable diameter stabilizer is composed of an upper housing 1, a pressing piston 2, a sealing ring 3, an upper mandrel 4, a spring 5, a combined chute 6, a driving compression bar 7, a middle mandrel 8, a lower housing 9, an inclined surface body 10, a radial piston 11, a lower mandrel 12, an oil filler hole pin 13, an exhaust hole pin 14, a balance piston 15, a filter plate 16, a clamp spring 17, a choke plug 18, a support pin 19, a stop pin 20, an upper pore plate 21, a lower pore plate 22, a mushroom inner core 23, a mushroom outer ring 24, a sleeve 25, a disc spring 26 and a conversion joint 27, wherein the upper housing 1 and the lower housing 9, the lower housing 9 and the conversion joint 27, the pressing piston 2 and the upper mandrel 4, the upper mandrel 4 and the middle mandrel 8, the middle mandrel 8 and the lower mandrel 12, the lower mandrel 12 and the upper pore plate 21, and the upper pore plate 21 and the lower pore plate 22 are all connected through threads, and is characterized in that: the inner wall of the upper shell 1 is provided with 4 combined sliding grooves 6, the combined sliding grooves 6 are uniformly distributed along the circumferential direction of the inner wall of the upper shell 1, the upper mandrel 4 is provided with 4 driving compression bars 7, the driving compression bars 7 are uniformly distributed along the circumferential direction of the upper mandrel 4, the upper end of the combined sliding grooves 6 is used for supporting and limiting the springs 5, and the combined sliding grooves 6 interact with the driving compression bars 7; the combined sliding groove 6 is provided with an upper arc sliding surface 6a, a long straight sliding surface 6b, a transition end surface 6c, a middle arc sliding surface 6d, a lower arc sliding surface 6e, a lower end surface 6f, a side wall sliding surface 6g, an upper end surface 6h, a transition surface 6i, a long end surface 6j and a middle end surface 6k, the driving pressing rod 7 is provided with a driving end head 7a, a driving rod 7b and a reinforcing pulling rod 7c, and a diameter-changing mechanism is formed by the spring 5, the combined sliding groove 6 and the driving pressing rod 7 together and used for controlling the extension or contraction of the radial piston 11.
The method for remotely controlling the variable diameter stabilizer is characterized by comprising the following steps of: the initial state of the reducing mechanism is that the driving end 7a is positioned at the top end of the upper end arc sliding surface 6a, and the radial piston 11 is in a contracted state at the moment; when the pump is started for the first time, the drilling fluid drives the pressing piston 2 to drive the upper mandrel 4 to move downwards so as to drive the reducing mechanism to perform reducing operation, so that the radial piston 11 extends outwards: in the process that the radial piston 11 is changed from the contracted state to the extended state, the driving compression rod 7 slides downwards along the combined sliding groove 6, the driving end head 7a slides along the upper arc sliding surface 6a to the long straight sliding surface 6b to slide downwards continuously, the pump is stopped at the moment, the upper mandrel 4 drives the driving compression rod 7 to move upwards under the action of the restoring force of the spring 5, and the driving end head 7a slides upwards to fall into the transition surface 6i through the middle arc sliding surface 6d and is blocked by the transition end surface 6c, and the spring 5 is in a compressed state at the moment; when the pump is started for the second time, the piston 2 is pressed to drive the upper mandrel 4 to further compress the spring 5 in a compressed state, the driving end head 7a acts on the lower end arc sliding surface 6e and slides downwards to the side wall sliding surface 6g along the lower end arc sliding surface 6e, the driving end head 7a falls into the long end surface 6j due to the restoring force generated by deformation of the driving pressing rod 7, the fluid pressure is reduced at the moment, the driving end head 7a moves upwards along the side wall sliding surface 6g under the restoring force of the spring 5, when the driving end head 7a slides upwards to the top end of the upper end arc sliding surface 6a, the restoring force of the driving pressing rod 7 enables the driving end head 7a to rebound to the middle end surface 6k and be blocked by the upper end surface 6h, and at the moment, the driving end head 7a is positioned at the top end of the upper end arc sliding surface 6a, so that one cycle is completed.
The above-described embodiments are intended to illustrate the present invention and not to limit the scope of the invention, and any equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the invention are intended to be within the scope of the present invention.
Claims (1)
1. A remote control variable diameter stabilizer comprises an upper shell (1), a pressing piston (2), a sealing ring (3), an upper mandrel (4), a spring (5), a combined sliding groove (6), a driving pressing rod (7), a middle mandrel (8), a lower shell (9), an inclined surface body (10), a radial piston (11), a lower mandrel (12), an oil injection hole pin (13), an exhaust hole pin (14), a balance piston (15), a filter plate (16), a clamp spring (17), a choke plug (18), a supporting pin (19), a stop pin (20), an upper pore plate (21), a lower pore plate (22), a mushroom inner core (23), a mushroom outer ring (24), Sleeve (25), dish spring (26) and crossover sub (27) are constituteed, wherein go up casing (1) and lower casing (9), lower casing (9) and crossover sub (27), pressure move piston (2) and go up dabber (4), go up dabber (4) and dabber (8), dabber (8) and lower dabber (12), lower dabber (12) and go up orifice plate (21), go up orifice plate (21) and orifice plate (22) all through threaded connection, its characterized in that: the inner wall of the upper shell (1) is provided with 4 combined sliding grooves (6), the combined sliding grooves (6) are uniformly distributed along the circumferential direction of the inner wall of the upper shell (1), the upper mandrel (4) is provided with 4 driving compression bars (7), the driving compression bars (7) are uniformly distributed along the circumferential direction of the upper mandrel (4), The upper end of the combined sliding chute (6) is used for supporting and limiting the spring (5), and the combined sliding chute (6) is interacted with the driving compression bar (7); The combined sliding chute (6) is provided with an upper end arc sliding surface (6 a), a long straight sliding surface (6 b), a transitional end surface (6 c), a middle end arc sliding surface (6 d), a lower end arc sliding surface (6 e), a lower end surface (6 f), a side wall sliding surface (6 g), an upper end surface (6 h), a transitional surface (6 i), a long end surface (6 j) and a middle end surface (6 k), the driving pressing rod (7) is provided with a driving end head (7 a), a driving rod (7 b) and a reinforcing pulling rod (7 c), and a reducing mechanism is formed by the spring (5), the combined sliding chute (6) and the driving pressing rod (7) together and is used for controlling the extension or contraction of the radial piston (11); the using method of the remote control variable diameter stabilizer comprises the following steps: the initial state of the reducing mechanism is that the driving end head (7 a) is positioned at the top end of the upper end arc sliding surface (6 a), and the radial piston (11) is in a contracted state at the moment; when the pump is started for the first time, drilling fluid drives the pressing piston (2) to drive the upper mandrel (4) to move downwards so as to drive the reducing mechanism to perform reducing operation, and the radial piston (11) extends outwards: in the process that the radial piston (11) is changed from a contracted state to an extended state, the driving pressure rod (7) slides downwards along the combined sliding groove (6), the driving end head (7 a) slides to the long straight sliding surface (6 b) along the upper arc sliding surface (6 a) to continuously slide downwards, the pump is stopped at the moment when the driving end head falls into the lower end surface (6 f), the upper mandrel (4) drives the driving pressure rod (7) to move upwards under the action of the restoring force of the spring (5), the driving end head (7 a) slides upwards through the middle arc sliding surface (6 d), falls into the transition surface (6 i) and is blocked by the transition end surface (6 c), and the spring (5) is in a compressed state; When the pump is started for the second time, the piston (2) is pressed to drive the upper mandrel (4) to further compress the spring (5) in a compressed state, the driving end head (7 a) acts on the lower end arc sliding surface (6 e) and slides downwards to the side wall sliding surface (6 g) along the lower end arc sliding surface (6 e), the driving end head (7 a) falls into the long end surface (6 j) due to the restoring force generated by deformation of the driving end head (7) at the moment to reduce the fluid pressure, the driving end head (7 a) moves upwards along the side wall sliding surface (6 g) under the restoring force of the spring (5), when the driving end head (7 a) slides upwards to the top end of the upper end arc sliding surface (6 a), the restoring force of the driving end head (7 a) enables the driving end head (7 a) to bounce back to the middle end surface (6 k) and is blocked by the upper end surface (6 h), at this time, the driving end (7 a) is positioned at the top end of the upper arc sliding surface (6 a), thereby completing one cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911341658.8A CN110847822B (en) | 2019-12-24 | 2019-12-24 | Remote control variable diameter stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911341658.8A CN110847822B (en) | 2019-12-24 | 2019-12-24 | Remote control variable diameter stabilizer |
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| Publication Number | Publication Date |
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| CN110847822A CN110847822A (en) | 2020-02-28 |
| CN110847822B true CN110847822B (en) | 2024-09-24 |
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| CN201911341658.8A Active CN110847822B (en) | 2019-12-24 | 2019-12-24 | Remote control variable diameter stabilizer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562220B (en) * | 2022-03-08 | 2024-06-18 | 西南石油大学 | Variable diameter stabilizer for well track control |
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| EP0251543B1 (en) * | 1986-07-03 | 1991-05-02 | Charles Abernethy Anderson | Downhole stabilisers |
| US5181576A (en) * | 1991-02-01 | 1993-01-26 | Anadrill, Inc. | Downhole adjustable stabilizer |
| FR2678678A1 (en) * | 1991-07-04 | 1993-01-08 | Smf Int | DEVICE FOR ADJUSTING THE AZIMUT OF THE TRAJECTORY OF A DRILLING TOOL IN ROTARY MODE. |
| US5265684A (en) * | 1991-11-27 | 1993-11-30 | Baroid Technology, Inc. | Downhole adjustable stabilizer and method |
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Inventor after: Tang Liping Inventor after: Yang Zihao Inventor after: Zhang Jinyu Inventor after: Tang Rui Inventor after: Yang Fan Inventor before: Yang Zihao Inventor before: Zhang Jinyu Inventor before: Tang Liping Inventor before: Tang Rui Inventor before: Yang Fan |
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