CN113216901B - Quick well abandoning device for deep water high-pressure gas well - Google Patents
Quick well abandoning device for deep water high-pressure gas well Download PDFInfo
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- CN113216901B CN113216901B CN202110645554.7A CN202110645554A CN113216901B CN 113216901 B CN113216901 B CN 113216901B CN 202110645554 A CN202110645554 A CN 202110645554A CN 113216901 B CN113216901 B CN 113216901B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 238000013016 damping Methods 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 6
- 239000004568 cement Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
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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)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to a quick well abandoning device for a deepwater high-pressure gas well, and belongs to the technical field of offshore well abandoning. The drill pipe drilling machine comprises an upper sleeve, a lower sleeve, a drill pipe, a flange plate, a ball valve mechanism and a sliding mechanism, wherein the flange plate is fixedly arranged in the lower sleeve, the sliding mechanism is movably inserted on the flange plate, the ball valve mechanism is sleeved in the lower sleeve on one side of the flange plate, the upper sleeve is arranged on one side of the lower sleeve, and the drill pipe is arranged in the upper sleeve in an annular mode. The quick well abandoning device for the deepwater high-pressure gas well drives the sliding plate to move downwards through the pressing plate, so that the ball valve rotates to close the central hole, the high-pressure gas at the bottom of the well is effectively prevented from flowing upwards, the influence of the high-pressure gas at the bottom of the well is avoided in the well abandoning process, the well abandoning efficiency can be accelerated, and the working time of well abandoning operation is saved; through the cooperation of the self-locking hole and the self-locking key, the return stroke of the sliding plate is prevented, the leakage of high-pressure gas at the well bottom caused by opening the ball valve is prevented, and the quality of plugging is ensured.
Description
Technical Field
The invention relates to a quick well abandoning device for a deepwater high-pressure gas well, and belongs to the technical field of offshore well abandoning.
Background
Along with the continuous development of petroleum gas resources, a large number of old oil and gas wells at sea are gradually abandoned, in order to avoid the harm to the ecological environment caused by the upward movement of underground high-pressure gas in the abandoned oil and gas wells at sea, the abandoned oil and gas wells need to be permanently plugged, and in the process of abandoning the wells at sea, due to the advantages of simple and convenient operation, permanent high pressure bearing and the like, a method of punching cement plugs at intervals is generally adopted for plugging so as to prevent the upward movement of the underground high-pressure gas.
In the specific construction process, the setting time of the cement plug is long, so that the working time of well abandoning operation is prolonged, and under the condition that an offshore operation platform needs about 200 ten thousand yuan per day, the long setting time of the cement plug additionally causes high platform use cost, so that the cost is increased. Therefore, there is a need for improvement thereof.
Disclosure of Invention
The invention aims to: aiming at the defects of the prior art, the deep water high-pressure gas well rapid well abandoning device is simple in structure and convenient to use, can effectively reduce the working time of well abandoning operation, and simultaneously ensures the plugging quality.
The technical scheme of the invention is as follows:
the utility model provides a deep water high-pressure gas well device of abandoning well fast, it comprises upper casing, lower casing, drilling rod, flange plate, ball valve mechanism and slide mechanism, its characterized in that: the lower sleeve is internally and fixedly provided with a flange plate, the flange plate is movably inserted with a sliding mechanism, the lower sleeve at one side of the flange plate is internally sleeved with a ball valve mechanism, one side of the lower sleeve is provided with an upper sleeve, and a drill rod is arranged in the upper sleeve in an annular mode.
The lower casing is a reducing hollow body with a central hole in the axial direction, a limiting boss is arranged on the central hole of the lower casing, a groove is axially formed in the lower casing on one side of the central hole, and a damping spring is fixedly arranged at the bottom of the groove.
The flange plate is symmetrically provided with bolt holes, the flange plate on one side of each bolt hole is provided with a slurry hole B, and the flange plate on the other side of each bolt hole is provided with a rack hole.
Ball valve mechanism constitute by ball valve, sleeve, assembly seat, transmission shaft and gear, the sleeve pipe suit is in the center hole of lower sleeve pipe, the sheathed tube upper end is contradicted with the flange board and is connected, one side and the sleeve pipe of assembly seat are contradicted and are connected, the opposite side and the spacing boss of assembly seat are contradicted and are connected, movable mounting has the ball valve on the assembly seat, the fixed cartridge in one side of ball valve has the transmission shaft, the transmission shaft extends to the assembly seat outside, extends to and is equipped with the gear admittedly on the transmission shaft in the assembly seat outside.
The sliding mechanism is composed of a pressing plate, a sliding plate and a fixed plate, the pressing plate is fixedly connected with the sliding plate, one side of the sliding plate is provided with a dovetail gear, a dovetail groove is formed in the fixed plate corresponding to the dovetail gear, the sliding plate is connected with the fixed plate in a sliding mode through the dovetail groove and the dovetail gear in a matched mode, the other side of the sliding plate is provided with a rack, and the rack is connected with the gear in a meshed mode.
The sliding plate on one side of the rack is provided with a self-locking hole.
The pressing plate is arranged in the lower sleeve in an annular shape, and a slurry hole A is formed in the pressing plate.
One end of the damping spring is fixedly connected with the lower sleeve, the other end of the damping spring is fixedly connected with the fixing plate, a fixing hole is formed in the fixing plate fixedly connected with the damping spring, and a self-locking key is arranged in the fixing hole.
The self-locking key consists of a compression spring and a compression key, and the bottom of the compression key is fixedly connected with the compression spring.
The invention has the beneficial effects that:
according to the device for quickly abandoning the deep-water high-pressure gas well, the pressure on the pressing plate is applied to descend so as to drive the sliding plate to descend, and the gear meshed and connected with the rack on the sliding plate rotates so as to drive the ball valve to rotate to close the central hole, so that the high-pressure gas at the bottom of the well is effectively prevented from flowing upwards, the influence of the high-pressure gas at the bottom of the well is avoided in the process of abandoning the well, the efficiency of abandoning the well can be accelerated, and the working time of the well abandoning operation is saved; through dovetail tooth sliding fit of sliding plate and dovetail sliding fit of fixed plate, make the sliding plate keep the axial down, through the cooperation of the self-locking key on the lockhole on the sliding plate and the fixed plate, make the self-locking key pop out the dead lock sliding plate, prevent the return stroke of sliding plate, prevent that the ball valve from being opened and causing revealing of shaft bottom high-pressure gas, guaranteed the quality of shutoff.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a flange plate according to the present invention;
FIG. 3 is a schematic view of the sliding mechanism of the present invention;
fig. 4 is a schematic structural view of the self-locking key of the present invention.
In the figure: 1. sleeving a sleeve; 2. a drill stem; 3. setting a sleeve; 4. a flange plate; 5. a sleeve; 6. assembling a base; 7. a ball valve; 8. a drive shaft; 9. a limiting boss; 10. pressing a plate; 11. a sliding plate; 12. a gear; 13. a rack; 14. self-locking holes; 15. a fixing plate; 16. a damping spring; 17. bolt holes; 18. a mud hole A; 19. a mud hole B; 20. a fixing hole; 21. a compression spring; 22. a compression key; 23. a rack hole; 24. a central bore.
Detailed Description
The quick well abandoning device for the deepwater high-pressure gas well comprises an upper casing 1, a lower casing 3, a drill rod 2, a flange plate 4, a ball valve mechanism and a sliding mechanism, wherein the lower casing 3 is a reducing hollow body with a central hole 24 in the axial direction, a limiting boss 9 is arranged on the central hole 24 of the lower casing 3, a groove is formed in the lower casing 3 on one side of the central hole 24 in the axial direction, a damping spring 16 is fixedly installed at the bottom of the groove, the flange plate 4 is fixedly installed in the lower casing 3, the ball valve mechanism is sleeved in the central hole 24 of the lower casing 3 on one side of the flange plate 4, the ball valve mechanism is sleeved in the central hole 24 of the lower casing 3 and comprises a ball valve 7, a sleeve 5, an assembly seat 6, a transmission shaft 8 is fixedly inserted in one side of the ball valve 7, the transmission shaft 8 extends to the outer side of the assembly seat 6, and a gear 12 is fixedly installed on the transmission shaft 8 extending to the outer side of the assembly seat 6.
The flange plate 4 is symmetrically provided with bolt holes 17, the flange plate 4 on one side of each bolt hole 17 is provided with a slurry hole B19, the flange plate 4 on the other side of each bolt hole 17 is provided with a rack 13 hole, a sliding mechanism is movably inserted in the rack 13 hole and consists of a pressing plate 10, a sliding plate 11 and a fixed plate 15, the pressing plate 10 is arranged in the lower sleeve 3 in an annular shape, the pressing plate 10 is provided with a slurry hole A18, the pressing plate 10 is fixedly connected with the sliding plate 11, one side of the sliding plate 11 is provided with dovetail teeth, the fixed plate 15 corresponding to the dovetail teeth is provided with dovetail grooves, the sliding plate 11 and the fixed plate 15 are in matched sliding connection through the dovetail grooves and the dovetail teeth, the other side of the sliding plate 11 is provided with a rack 13, the rack 13 is meshed with a gear 12 in the ball valve mechanism, and the sliding plate 11 on one side of the rack 13 is provided with a self-locking hole 14.
Damping spring 16 one end and recess bottom fixed connection, damping spring 16's the other end and fixed plate 15 fixed connection, be provided with fixed orifices 20 on damping spring 16 fixed connection's the fixed plate 15, be provided with the auto-lock key in the fixed orifices 20, the auto-lock key comprises compression spring 21 and compression key 22, compression key 22 bottom fixedly connected with compression spring 21, form axial fixity between messenger sliding plate 11 and the fixed plate 15 through auto-lock hole 14 and auto-lock key, damping spring 16's effect is the impact force that slows down high-pressure gas, avoid the grout to receive high-pressure gas's in the pit impact, drive the motion of slide mechanism, lead to ball valve 7 to take place to rotate.
Go up the interior ring empty of sleeve pipe 1 and be provided with drilling rod 2, go up sleeve pipe 1 and drilling rod 2 and be connected with upper portion drilling equipment respectively, this quick abandoning well equipment comprises lower sleeve pipe 3, flange board 4, ball valve mechanism and slide mechanism and abandons well equipment main part, and during the assembly, abandons well equipment main part through last sleeve pipe 1 installation.
When normal well abandoning operation is carried out, cement slurry is firstly injected into the upper casing 1, flows through the cement slurry hole B19 of the flange plate 4 through the cement slurry hole A18 of the pressing plate 10 and enters the ball valve mechanism, at the moment, the ball valve 7 is in an open state, and the cement slurry flows into the underground from the ball valve 7 through the central hole 24 of the lower casing 3.
This quick abandoning well device during operation of deep water high pressure gas well, transfer drilling rod 2, make drilling rod 22 exert decurrent pressure to clamp plate 10, make clamp plate 10 go down, because clamp plate 10 and sliding plate 11 fixed connection, sliding plate 11 takes place synchronous down, the descending in-process of sliding plate 11, rack 13 through sliding plate 11 one side is connected with the gear 12 meshing of ball valve mechanism, make gear 12 take place to rotate, gear 12 drives ball valve 7 through transmission shaft 8 and takes place synchronous rotation, close centre bore 24 with ball valve 7, reach the purpose that prevents bottom hole high-pressure gas upscurrying.
Meanwhile, in the descending process of the sliding plate 11, the dovetail teeth on the other side of the sliding plate 11 slide in a matched manner with the dovetail grooves on the fixed plate 15, because the bottom of the fixed plate 15 is fixedly connected with the spring, when the sliding friction force between the dovetail grooves and the dovetail teeth is smaller than or equal to the elastic force of the spring, the sliding plate 11 and the fixed plate 15 move relatively, so that the sliding plate 11 descends along the axial direction of the fixed plate 15, the self-locking holes 14 on the sliding plate 11 descend synchronously, when the sliding plate descends from the locking holes 14 to coincide with the self-locking keys compressed on the fixed plate 15, the compression keys 22 are popped out from the fixed plate 15 under the action of the elastic force of the compression springs 21, so that the self-locking holes 14 are clamped, the sliding plate 11 stops descending and is fixed, the return stroke of the sliding plate 11 is prevented, at this time, the gear 12 meshed and connected with the rack 13 of the sliding plate 11 stops rotating, the rotation of the well abandoning device is stopped when the well abandoning device is kept in a closed state, and the well abandoning device is locked.
The device for quickly abandoning the deep-water high-pressure gas well drives the sliding plate 11 to descend under the action of pressure applied to the pressing plate 10, and the gear 12 meshed and connected with the rack 13 on the sliding plate 11 rotates, so that the ball valve 7 is driven to rotate to close the central hole 24, the high-pressure gas at the bottom of the well is effectively prevented from flowing upwards, the influence of the high-pressure gas at the bottom of the well is avoided in the process of abandoning the well, the efficiency of abandoning the well can be accelerated, and the working time of the operation of abandoning the well is saved; through the dovetail tooth sliding fit of sliding plate 11 and the dovetail groove of fixed plate 15, make sliding plate 11 keep the axial down, through the cooperation of self-locking hole 14 on sliding plate 11 and the compression key 22 of self-locking key on fixed plate 15, make compression key 22 pop out under the spring action of compression spring 21, die the sliding plate 11 lock, prevent the return stroke of sliding plate 11, prevent that ball valve 7 from being opened and causing the leakage of shaft bottom high-pressure gas, guaranteed the quality of shutoff.
Claims (7)
1. The utility model provides a deep water high-pressure gas well abandons well device fast, it comprises upper casing (1), case (3), drilling rod (2), flange plate (4), ball valve mechanism and slide mechanism, its characterized in that: a flange plate (4) is fixedly arranged in the lower sleeve (3), a sliding mechanism is movably inserted in the flange plate (4), the sliding mechanism consists of a pressing plate (10), a sliding plate (11) and a fixed plate (15), the pressing plate (10) is fixedly connected with the sliding plate (11), dovetail teeth are arranged on one side of the sliding plate (11), dovetail grooves are arranged on the fixed plate (15) corresponding to the dovetail teeth, the sliding plate (11) is in sliding connection with the fixed plate (15) through the matching of the dovetail grooves and the dovetail teeth, a rack (13) is arranged on the other side of the sliding plate (11), a ball valve mechanism is sleeved in the lower sleeve (3) on one side of the flange plate (4), the ball valve mechanism consists of a ball valve (7), a sleeve (5), an assembly seat (6), a transmission shaft (8) and a gear (12), the sleeve is sleeved in a central hole (24) of the lower sleeve (3), the upper end of the sleeve is connected with the flange plate (4), one side of the assembly seat (6) is connected with the interference sleeve, the other side of the assembly seat (6) is connected with a limiting boss (9), a movable assembly seat (6) is provided with the transmission shaft (7), the ball valve (8) extends to the outer side of the ball valve seat (6), and the ball valve (8) is fixedly inserted in the assembly seat (6), the gear (12) is meshed with the rack (13) and connected, an upper sleeve (1) is installed on one side of the lower sleeve (3), and a drill rod (2) is arranged in the upper sleeve (1) in an annular mode.
2. The quick well abandoning device of deep water high-pressure gas well as claimed in claim 1, characterized in that: the lower casing (3) is a reducing hollow body with a central hole (24) arranged in the axial direction, a limiting boss (9) is arranged on the central hole (24) of the lower casing (3), a groove is axially formed in the lower casing (3) on one side of the central hole (24), and a damping spring (16) is fixedly arranged at the bottom of the groove.
3. The quick well abandoning device of deep water high-pressure gas well as claimed in claim 1, characterized in that: the flange plate (4) on be the symmetry and open system bolt hole (17), make on the flange plate (4) of bolt hole (17) one side have mud hole B (19), make on the flange plate (4) of bolt hole (17) opposite side have rack hole.
4. The deep water high pressure gas well rapid abandoning device of claim 1, which is characterized in that: the sliding plate (11) at one side of the rack (13) is provided with a self-locking hole (14).
5. The quick well abandoning device of deep water high-pressure gas well as claimed in claim 1, characterized in that: the pressing plate (10) is arranged in the lower casing pipe (3) in an annular shape, and a slurry hole A (18) is formed in the pressing plate (10).
6. The deep water high pressure gas well rapid abandoning device of claim 2, which is characterized in that: one end of the damping spring (16) is fixedly connected with the lower sleeve (3), the other end of the damping spring (16) is fixedly connected with the fixing plate (15), the fixing plate (15) fixedly connected with the damping spring (16) is provided with a fixing hole (20), and a self-locking key is arranged in the fixing hole (20).
7. The deep water high pressure gas well rapid abandoning device of claim 6, which is characterized in that: the self-locking key consists of a compression spring (21) and a compression key (22), and the bottom of the compression key (22) is fixedly connected with the compression spring (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110645554.7A CN113216901B (en) | 2021-06-10 | 2021-06-10 | Quick well abandoning device for deep water high-pressure gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110645554.7A CN113216901B (en) | 2021-06-10 | 2021-06-10 | Quick well abandoning device for deep water high-pressure gas well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113216901A CN113216901A (en) | 2021-08-06 |
| CN113216901B true CN113216901B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110645554.7A Active CN113216901B (en) | 2021-06-10 | 2021-06-10 | Quick well abandoning device for deep water high-pressure gas well |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656618Y (en) * | 2003-11-01 | 2004-11-17 | 中国石化胜利油田有限公司采油工艺研究院 | Abandoned well sealing device |
| CN2773305Y (en) * | 2004-10-21 | 2006-04-19 | 辽河石油勘探局 | Hydraulic self sealing hole stopper with position concerned releasement |
| CN102797428A (en) * | 2012-08-30 | 2012-11-28 | 中国海洋石油总公司 | Well abandoning tool capable of locking position |
| WO2014137314A1 (en) * | 2013-03-04 | 2014-09-12 | Halliburton Energy Services, Inc. | Abandonment and containment system for gas wells |
| WO2020025948A1 (en) * | 2018-08-01 | 2020-02-06 | Ardyne Holdings Limited | Improvements in or relating to well abandonment and slot recovery |
| CN212105832U (en) * | 2019-11-13 | 2020-12-08 | 宝鸡市元亨石油设备有限责任公司 | Underground switch valve capable of being disconnected or connected back |
-
2021
- 2021-06-10 CN CN202110645554.7A patent/CN113216901B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656618Y (en) * | 2003-11-01 | 2004-11-17 | 中国石化胜利油田有限公司采油工艺研究院 | Abandoned well sealing device |
| CN2773305Y (en) * | 2004-10-21 | 2006-04-19 | 辽河石油勘探局 | Hydraulic self sealing hole stopper with position concerned releasement |
| CN102797428A (en) * | 2012-08-30 | 2012-11-28 | 中国海洋石油总公司 | Well abandoning tool capable of locking position |
| WO2014137314A1 (en) * | 2013-03-04 | 2014-09-12 | Halliburton Energy Services, Inc. | Abandonment and containment system for gas wells |
| WO2020025948A1 (en) * | 2018-08-01 | 2020-02-06 | Ardyne Holdings Limited | Improvements in or relating to well abandonment and slot recovery |
| CN212105832U (en) * | 2019-11-13 | 2020-12-08 | 宝鸡市元亨石油设备有限责任公司 | Underground switch valve capable of being disconnected or connected back |
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| Publication number | Publication date |
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| CN113216901A (en) | 2021-08-06 |
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