CN113047784B - Intelligent diameter-variable stabilizer - Google Patents
Intelligent diameter-variable stabilizer Download PDFInfo
- Publication number
- CN113047784B CN113047784B CN202110358137.4A CN202110358137A CN113047784B CN 113047784 B CN113047784 B CN 113047784B CN 202110358137 A CN202110358137 A CN 202110358137A CN 113047784 B CN113047784 B CN 113047784B
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- Prior art keywords
- diameter
- variable
- shell
- control module
- intelligent
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000010720 hydraulic oil Substances 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 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
- 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)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Actuator (AREA)
Abstract
The invention discloses an intelligent variable-diameter stabilizer which is characterized in that: an intelligent variable-diameter stabilizer comprises a cable (1), a shell (2), a power module, a variable-diameter module and an intelligent control module, wherein the power module comprises a motor shaft (3), a motor (5), a piston rod (7) and an annular piston (10), the variable-diameter module comprises a pushing block (13), an elastic body (16), an outer side sealing ring (12), an inner side sealing ring (14), a pushing steel ball (19), a spring contact finger (20) and a locking steel ring (21), and the intelligent control module comprises the cable (1), an electromagnetic valve (11) and a control module (9); in the working process, the power module drives the reducing module to realize reducing, and the intelligent control module realizes signal transmission and accurately controls reducing; the invention adopts an electromechanical-hydraulic integrated structure, has simple structure, can realize diameter change under the condition of continuous drilling, realizes high-efficiency transmission by transmitting signals in real time, and has diameter change free from the limitation of the discharge capacity and the size of drilling fluid.
Description
Technical Field
The invention relates to the field of petroleum drilling machinery, in particular to an intelligent variable-diameter stabilizer.
Background
With the increasing difficulty of oil field development and the rapid development of drilling technology, it has become a trend to utilize directional wells, horizontal wells and extended reach wells to perform exploration and development of oil and gas fields. The variable-diameter stabilizer is a key tool for the borehole track control technology of horizontal wells and extended reach wells, and can reduce the tripping times in the drilling process, improve the mechanical drilling speed and reduce the drilling cost. The diameter-changing stabilizer has a pure mechanical, mechanical-hydraulic and mechanical-hydraulic integrated structure, the existing diameter-changing stabilizer mainly performs diameter-changing operation based on mechanical force or hydraulic force, the operation is complex, control signals are generally transmitted by means of mud pulse, electromagnetic wave, sound wave and the like, the transmission speed is low, and the reliability is low. The existing variable-diameter stabilizer has the problems of low efficiency, low signal transmission speed, dependence of a variable-diameter structure on drilling fluid, complex structure and the like.
Disclosure of Invention
The invention aims to overcome the defects of the existing equipment and provides an intelligent variable-diameter stabilizer controlled by an electromechanical-hydraulic integrated closed-loop structure.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problem is as follows:
an intelligent variable-diameter stabilizer comprises a cable (1), a shell (2), a cable sealing ring (4), a drill rod sealing ring (17), a power module, a variable-diameter module and an intelligent control module, wherein the power module comprises a motor shaft (3), a motor (5), a piston rod (7) and an annular piston (10), the variable-diameter module comprises a pushing block (13), an elastic body (16), an outer sealing ring (12), an inner sealing ring (14), a pushing steel ball (19), a spring contact finger (20) and a locking steel ring (21), and the intelligent control module comprises the cable (1), an electromagnetic valve (11) and a control module (9); the left end of the motor shaft (3) is fixedly connected with the shell (2), the hollow motor shaft (3) penetrates through the hollow motor (5), drilling fluid can pass through the hollow motor shaft, and the right side of the motor shaft (3) and the shell (2) are sealed through a drill rod sealing ring (17) to prevent hydraulic oil in the hydraulic cavity from leaking; a motor shaft (3) is provided with a pressure balancing through hole (8), a motor (5) is fixedly connected with a piston rod (7), and an annular piston (10) is fixedly connected with the piston rod (7); when the variable-diameter hydraulic pump works, the piston rod (7) and the annular piston (10) are driven by the motor (5) to move rightwards to compress hydraulic oil, and the variable-diameter module is pushed to move to realize variable diameter; the push block (13) is provided with a first-stage mounting groove (13a) and a second-stage mounting groove (13b), a push steel ball (19), a spring contact finger (20) and a locking steel ring (21) are mounted in the mounting grooves, the locking steel ring (21) used for fixing the position is arranged in the spring contact finger (20), the outer side of the spring contact finger (20) is provided with the push steel ball (19) used for realizing reducing locking, the lower end of the elastic body (16) is connected with a push block boss (13c) in a vulcanization mode, and the upper end of the elastic body is in contact with the inner wall of the shell (2); a cable hole (6) is formed in the shell (2), the cable (1) is connected with the electromagnetic valve (11) and the control module (9) through the cable hole (6), the control module (9) is installed on one side, close to the annular piston (10), in the shell (2), and the electromagnetic valve (11) is installed in the locking groove (18); the gland (15) is connected with the shell (2) through pipe threads, and the gland (15) is matched with the shell (2) to form a locking groove (18).
The utility model provides an intelligence variable diameter stabilizer which characterized in that: n pushing blocks (13) are arranged along the circumferential direction, wherein N is more than or equal to 3; m rows are arranged along the axial direction, and M is more than or equal to 1.
Compared with the prior art, the invention has the beneficial effects that: (1) the drilling operation is not influenced during the diameter changing operation, and the drilling operation can be carried out without stopping according to the diameter changing requirement, so that the drilling efficiency can be improved; (2) the variable-diameter control signal is independent of the drilling fluid and is not limited by the displacement and the size of the drilling fluid; (3) the control signal is transmitted through the cable, so that real-time, bidirectional and high-speed transmission can be realized, the control precision is high, and intelligent control can be realized; (4) the intelligent variable-diameter stabilizer also has the characteristics of simple structure, simple control operation and closed-loop control.
Drawings
FIG. 1 is a schematic structural diagram of the intelligent variable diameter stabilizer of the invention.
FIG. 2 is a schematic structural diagram of the intelligent diameter-variable stabilizer of the invention for realizing two-stage diameter variation.
FIG. 3 is a sectional view taken along line A-A of the intelligent variable diameter stabilizer of the present invention.
FIG. 4 is a partial enlarged view I of the intelligent variable diameter stabilizer of the present invention.
FIG. 5 is a B-B cross-sectional view of the intelligent variable diameter stabilizer of the present invention.
FIG. 6 is a schematic diagram of the primary diameter variation of the intelligent diameter-variable stabilizer of the invention.
FIG. 7 is a schematic diagram of the two-stage diameter change of the intelligent diameter-variable stabilizer of the invention.
In the figure: the device comprises a cable (1), a shell (2), a motor shaft (3), a cable sealing ring (4), a motor (5), a cable hole (6), a piston rod (7), a balance pressure through hole (8), a control module (9), an annular piston (10), an electromagnetic valve (11), an outer sealing ring (12), a pushing block (13), an inner sealing ring (14), a gland (15), an elastic body (16), a drill rod sealing ring (17), a locking groove (18), a pushing steel ball (19), a spring contact finger (20), a locking steel ring (21), a primary mounting groove (13a), a secondary mounting groove (13b) and a pushing block boss (13 c).
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the left end of a motor shaft (3) in the intelligent variable-diameter stabilizer is fixedly connected with a shell (2), the hollow motor shaft (3) penetrates through a hollow motor (5), the inside of the hollow motor shaft can be sealed through drilling fluid, and the right side of the motor shaft (3) and the shell (2) are sealed through a drill rod sealing ring (17) to prevent hydraulic oil in a hydraulic cavity from leaking; the motor shaft (3) is provided with a balance pressure through hole (8) for balancing the inner side pressure and the outer side pressure, the motor (5) is fixedly connected with the piston rod (7) and the annular piston (10), the piston rod (7) and the annular piston (10) are driven by the motor (5) to move rightwards to compress hydraulic oil during work, and the reducing mechanism is further pushed to realize reducing.
As shown in fig. 1 and 3, the pushing blocks (13) in the intelligent variable diameter stabilizer can be arranged in a plurality of circumferential directions, in a plurality of axial rows, or in a spiral manner.
As shown in figures 1 and 4, the shell (2) and the gland (15) in the intelligent variable-diameter stabilizer are matched to form a locking groove (18) to position the installation of the electromagnetic valve (11) so as to conveniently open the cable hole (6).
As shown in fig. 1, 4, 6 and 7, a first-stage mounting groove (13a) and a second-stage mounting groove (13b) are formed in a pushing block (13) of the intelligent variable-diameter stabilizer, a pushing steel ball (19), a spring contact finger (20) and a locking steel ring (21) are mounted in the mounting grooves, the locking steel ring (21) for fixing the position is mounted in the spring contact finger (20), and the pushing steel ball (19) for variable-diameter locking is mounted on the outer side of the spring contact finger (20); the lower end of the elastic body (16) is connected with a boss (13c) of the pushing block in a vulcanization mode, and the other end of the elastic body is in contact with the inner wall of the shell (2) to ensure that the pushing block (13) is in a non-extending state when the diameter is not changed; an outer side sealing ring (12) and an inner side sealing ring (14) are arranged on the shell (2) to prevent hydraulic oil from leaking and prevent outer side drilling fluid from entering a hydraulic cavity.
As shown in fig. 1, 6 and 7, when the intelligent diameter-variable stabilizer is in a diameter-variable state, hydraulic oil in the hydraulic cavity pushes the pushing block (13) to move along the radial direction, and the pushing steel ball (19) is pushed into the clamping groove by the elastic force of the spring contact finger (20) to be locked.
The working process of the invention is as follows:
when the reducing mechanism is in an initial state, the motor (5) is positioned on the left side of the motor shaft (3), the reducing mechanism is in a non-reducing state under the elastic force of the elastic body (16), when the reducing mechanism is in the reducing state, the motor (5) is electrified to drive the annular piston (10) to move rightwards, the piston compresses hydraulic oil in the sealed hydraulic cavity, the reducing mechanism executes reducing operation to enable the pushing block (13) to extend outwards, and the elastic force of the spring contact finger (20) pushes the steel ball (19) in the first-stage mounting groove (13a) into the pushing groove (18), so that first-stage reducing is realized; during secondary diameter changing, the motor (5) is continuously electrified to move right, the electromagnetic valve (11) is simultaneously electrified, the pushing steel ball (19) in the first-stage mounting groove (13a) is pushed out of the locking groove (18) by utilizing the repulsion principle, the pushing block (13) continuously extends along the radial direction, the pushing steel ball (19) in the second-stage mounting groove (13b) is pushed into the locking groove (18) by the elastic force of the spring contact finger (20), secondary diameter changing is realized, and the electrification is stopped at the moment. When the diameter-variable state is reduced to the non-diameter-variable state, the motor (5) is electrified with reverse current to drive the annular piston (10) to move leftwards, the electromagnetic valve (11) is electrified simultaneously, the pushing steel ball (19) is pushed out of the locking groove (18) by utilizing the repulsion principle, the drilling fluid pressure outside the shell (2) is greater than the pressure of the sealing hydraulic cavity to push the pushing block (13) to retract, and when the pushing block (13) returns to the initial state, the electrification is stopped, so that a cycle is completed.
The above-described embodiments are intended to illustrate rather than to limit the scope of the invention, and all equivalent changes and modifications that may be made by one skilled in the art without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. An intelligent variable-diameter stabilizer comprises a cable (1), a shell (2), a cable sealing ring (4), a drill rod sealing ring (17), a power module, a variable-diameter module and an intelligent control module, wherein the power module comprises a motor shaft (3), a motor (5), a piston rod (7) and an annular piston (10), the variable-diameter module comprises a pushing block (13), an elastic body (16), an outer sealing ring (12), an inner sealing ring (14), a pushing steel ball (19), a spring contact finger (20) and a locking steel ring (21), and the intelligent control module comprises the cable (1), an electromagnetic valve (11) and a control module (9); the left end of the motor shaft (3) is fixedly connected with the shell (2), the hollow motor shaft (3) penetrates through the hollow motor (5), drilling fluid can pass through the hollow motor shaft, and the right side of the motor shaft (3) and the shell (2) are sealed through a drill rod sealing ring (17) to prevent hydraulic oil in the hydraulic cavity from leaking; a motor shaft (3) is provided with a pressure balancing through hole (8), a motor (5) is fixedly connected with a piston rod (7), and an annular piston (10) is fixedly connected with the piston rod (7); when the variable-diameter hydraulic pump works, the piston rod (7) and the annular piston (10) are driven by the motor (5) to move rightwards to compress hydraulic oil, and the variable-diameter module is pushed to move to realize variable diameter; the push block (13) is provided with a first-stage mounting groove (13a) and a second-stage mounting groove (13b), a push steel ball (19), a spring contact finger (20) and a locking steel ring (21) are mounted in the mounting grooves, the locking steel ring (21) used for fixing the position is arranged in the spring contact finger (20), the outer side of the spring contact finger (20) is provided with the push steel ball (19) used for realizing reducing locking, the lower end of the elastic body (16) is connected with a push block boss (13c) in a vulcanization mode, and the upper end of the elastic body is in contact with the inner wall of the shell (2); a cable hole (6) is formed in the shell (2), the cable (1) is connected with the electromagnetic valve (11) and the control module (9) through the cable hole (6), the control module (9) is installed on one side, close to the annular piston (10), in the shell (2), and the electromagnetic valve (11) is installed in the locking groove (18); the gland (15) is connected with the shell (2) through pipe threads, and the gland (15) is matched with the shell (2) to form a locking groove (18).
2. The intelligent variable-diameter stabilizer according to claim 1, wherein: n pushing blocks (13) are arranged along the circumferential direction, wherein N is more than or equal to 3; m rows are arranged along the axial direction, and M is more than or equal to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110358137.4A CN113047784B (en) | 2021-04-01 | 2021-04-01 | Intelligent diameter-variable stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110358137.4A CN113047784B (en) | 2021-04-01 | 2021-04-01 | Intelligent diameter-variable stabilizer |
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| Publication Number | Publication Date |
|---|---|
| CN113047784A CN113047784A (en) | 2021-06-29 |
| CN113047784B true CN113047784B (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110358137.4A Active CN113047784B (en) | 2021-04-01 | 2021-04-01 | Intelligent diameter-variable stabilizer |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458181B (en) * | 2022-01-20 | 2022-08-23 | 大庆市天德忠石油科技有限公司 | Elastic stabilizer for oil field drilling |
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2021
- 2021-04-01 CN CN202110358137.4A patent/CN113047784B/en active Active
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