CN113931592B - Retrievable horizontal well sand control pipe column salvaging and separating device - Google Patents
Retrievable horizontal well sand control pipe column salvaging and separating device Download PDFInfo
- Publication number
- CN113931592B CN113931592B CN202111536430.1A CN202111536430A CN113931592B CN 113931592 B CN113931592 B CN 113931592B CN 202111536430 A CN202111536430 A CN 202111536430A CN 113931592 B CN113931592 B CN 113931592B
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- Prior art keywords
- sand control
- fishing
- thread
- control screen
- separation device
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- 239000004576 sand Substances 0.000 title claims abstract description 59
- 238000000926 separation method Methods 0.000 claims abstract description 37
- 238000010008 shearing Methods 0.000 claims abstract description 13
- 238000007667 floating Methods 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims description 22
- 230000037431 insertion Effects 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 41
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Images
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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
Landscapes
- 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)
- Marine Sciences & Fisheries (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of sand control pipe column salvaging of oil exploitation wells, and provides a removable horizontal well sand control pipe column salvaging and separating device.A top packer is sequentially connected with a sand control screen pipe and a hydraulic separating device, and a floating shoe is arranged at the end part of the sand control screen pipe at the tail end; a service pipe column is inserted into the hydraulic separation device, a central shaft is arranged on the inner wall of the working barrel, a pressure transfer hole is formed by one end of the central shaft and the inner wall of the working barrel, a shearing piston and a support ring are fixed on the top of the central shaft, and the support ring is matched with the left-handed split thread; the left-handed split thread is matched with a fishing thread, the fishing thread is sleeved on the outer wall of the anti-rotation locking mechanism, and an upper joint and a guide plug are installed at the end part of the anti-rotation locking mechanism; according to the invention, the sand control screen pipe is connected in series by using the plurality of hydraulic separation devices, the service pipe column is put in during fishing to hydraulically unlock each hydraulic separation device, and the butt-buckling fishing spear is put in after unlocking, so that segmented fishing is realized, the fishing success rate is improved, the operation time is saved, and the labor intensity is reduced.
Description
Technical Field
The invention relates to the technical field of salvaging of sand control tubular columns of oil exploitation wells, in particular to a retrievable sand control tubular column salvaging and separating device for a horizontal well.
Background
At present, a horizontal well is mostly completed by adopting sand control, the problem of short production period generally exists due to the influence of the effective period of sand control, and a sand control pipe column is required to be pulled out frequently to control sand again. As the operating time increases, portions of the sand screens have begun to fail. Because of the effect of the deflecting section, the lifting force, the torque and the like of the wellhead cannot be completely transmitted into the horizontal section in the well, so that the conventional sand filter pipe salvaging process technologies such as lifting, casing milling, back-off and the like cannot be implemented, the production of the oil well is stopped, and the performance of the efficiency of the horizontal well is influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide a retrievable sand control tubular column salvaging and separating device for a horizontal well.
The new technical scheme of the invention is as follows: a retrievable horizontal well sand control pipe column salvaging and separating device, which comprises a well reserving pipe column, a service pipe column and a buckling salvaging spear, the well-remaining pipe column comprises a top packer, a filling sliding sleeve, a sand control screen pipe, a hydraulic separation device and a floating shoe, the service pipe column comprises an insert seal and a check valve, the opposite-buckling fishing spear comprises an upper joint, an anti-rotation locking mechanism, a fishing thread and a guide plug, the top packer is connected with one end of the filling sliding sleeve through threads, a filling opening is arranged on one side of the filling sliding sleeve, the other end of the filling sliding sleeve is connected with one end of the sand control screen pipe through threads, a plurality of screen holes are uniformly distributed on the outer wall of the sand control screen pipe, the other end of the sand control screen pipe is connected with one end of a hydraulic separation device through threads, the other end of the hydraulic separation device is connected with the sand control screen pipe, and the end part of the sand control screen pipe at the tail end is provided with a floating shoe; a service pipe column is inserted into the hydraulic separation device and comprises a pressure relief pipe, an insertion seal and a check valve, the end part of the pressure relief pipe is provided with the insertion seal, the insertion seal is closely matched with the hydraulic separation device, the outer wall of the insertion seal is fixed with a sealing module, one side of the insertion seal is provided with a pressure relief hole, and the end part of the insertion seal is provided with the check valve; the hydraulic separation device comprises a working cylinder, a pressure transmission hole, a shearing piston, a support ring, a left-handed split thread, a lower joint, a sealing gasket, a pin and a central shaft, one end of the working barrel is connected with a sand control screen pipe through threads, the other end of the working barrel is sleeved at one end of the lower joint, the other end of the lower joint is in threaded connection with a sand control screen pipe, the inner wall of the working barrel close to one end of the lower joint is integrally formed with a central shaft, the end part of the central shaft is provided with a positioning step, one end of the central shaft far away from the positioning step and the inner wall of the working barrel form a pressure transfer hole, the top of the central shaft is fixed with a shearing piston through a pin, one end of the shearing piston and the top of the central shaft are fixed with a supporting ring through a pin, the top of the support ring is matched with the left-handed split thread through a sealing gasket, and the left-handed split thread is arranged on the inner wall of the lower joint; the left-handed split thread and the fishing thread of the opposite-handed fishing spear are matched with each other, the opposite-handed fishing spear further comprises an upper joint, an anti-rotation locking mechanism and a guide plug, the upper joint is connected with one end of the anti-rotation locking mechanism through threads, the other end of the anti-rotation locking mechanism is provided with the guide plug through threads, the outer wall of the anti-rotation locking mechanism is sleeved with the fishing thread, and the fishing thread can slide on the outer wall of the anti-rotation locking mechanism.
The fishing thread is a split thread.
The fishing thread is 6 petals.
The insertion seal and the hydraulic separation device are in inserted butt joint.
The sealing module is a high-abrasion-resistance metal vulcanized sealing module.
The invention has the beneficial effects that: according to the invention, a plurality of specific hydraulic separation devices are connected in series with the sand control screen pipe, a service pipe column is put in during fishing to hydraulically unlock each hydraulic separation device, and a butt-buckling fishing spear is put in after unlocking, so that segmented fishing is realized, the fishing success rate is improved, the operation time is saved, and the labor intensity is reduced.
Drawings
FIG. 1 is a schematic diagram of a well casing string.
FIG. 2 is a schematic diagram of a service string.
Fig. 3 is a schematic structural diagram of the hydraulic separation device.
Fig. 4 is a schematic structural diagram of the make-up spear.
Wherein: 1. the packer comprises a top packer, 2, a filling sliding sleeve, 201, a filling port, 3, a sand control screen pipe, 4, a hydraulic separation device, 401, a working barrel, 402, a shearing piston, 403, a lower joint, 404, a pin, 405, a left-handed split thread, 406, a sealing gasket, 407, a support ring, 408, a central shaft, 408-1, a positioning step, 409, a pressure transmission hole, 5, a floating shoe, 6, a pressure relief pipe, 7, an insertion seal, 701, a sealing module, 702, a pressure relief hole, 8, a check valve, 9, an upper joint, 10, an anti-rotation locking mechanism, 11, a fishing thread, 12 and a guide plug.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
A retrievable horizontal well sand control pipe column salvaging and separating device comprises a well-staying pipe column, a service pipe column and a cross-buckling salvaging spear, wherein the well-staying pipe column comprises a top packer 1, a filling sliding sleeve 2, a sand control screen pipe 3, a hydraulic separating device 4 and a floating shoe 5, the service pipe column comprises an inserting seal 7 and a check valve 8, the cross-buckling salvaging spear comprises an upper joint 9, an anti-rotation locking mechanism 10, a salvaging thread 11 and a guide plug 12, the top packer 1 is connected with one end of the filling sliding sleeve 2 through a thread, a filling opening 201 is arranged on one side of the filling sliding sleeve 2, the other end of the filling sliding sleeve 2 is connected with one end of the sand control screen pipe 3 through a thread, a plurality of sieve holes are uniformly distributed on the outer wall of the sand control screen pipe 3, the other end of the sand control screen pipe 3 is connected with one end of the hydraulic separating device 4 through a thread, the other end of the hydraulic separating device 4 is connected with the sand control screen pipe 3, the end part of the sand control screen pipe 3 at the tail end is provided with a floating shoe 5; a service pipe column is inserted into the hydraulic separation device 4 and comprises a pressure relief pipe 6, an insertion seal 7 and a check valve 8, the end part of the pressure relief pipe 6 is provided with the insertion seal 7, the insertion seal 7 is closely matched with the hydraulic separation device 4, the outer wall of the insertion seal 7 is fixed with a seal module 701, one side of the insertion seal 7 is provided with a pressure relief hole 702, and the end part of the insertion seal 7 is provided with the check valve 8; the hydraulic separation device 4 comprises a working barrel 401, a pressure transmission hole 409, a shearing piston 402, a support ring 407, a left-handed split thread 405, a lower joint 403, a sealing gasket 406, a pin 404 and a central shaft 408, wherein one end of the working barrel 401 is in threaded connection with a sand control screen 3, the other end of the working barrel 401 is sleeved at one end of the lower joint 403, the other end of the lower joint 403 is in threaded connection with the sand control screen 3, the inner wall of the working barrel 401 is integrally formed with the central shaft 408 adjacent to one end of the lower joint 403, the end part of the central shaft 408 is provided with a positioning step 408-1, one end far away from the positioning step 408-1 and the end of the central shaft 408 and the inner wall of the working barrel 401 form the pressure transmission hole 409, the top of the central shaft 408 is fixed with the shearing piston 402 by the pin 404, one end of the shearing piston 402 and the top of the central shaft 408 are fixed with the support ring 407 by the pin 404, the top of the support ring 407 is matched with a left-handed split thread 405 through a sealing gasket 406, and the left-handed split thread 405 is arranged on the inner wall of the lower connector 403; levogyration split thread 405 and make up fishing thread 11 of fishing for the lance and cooperate with the antithetical couplet, the antithetical couplet drag for the lance still include top connection 9, prevent changeing locking mechanism 10 and guide plug 12, top connection 9 prevent changeing the one end of locking mechanism 10 through threaded connection, the other end of preventing changeing locking mechanism 10 install guide plug 12 through the screw thread, prevent changeing locking mechanism 10 outer wall cup jointed fishing thread 11, and fishing thread 11 is preventing changeing locking mechanism 10 outer wall slidable.
The fishing thread 11 is a split thread.
The fishing thread 11 is 6 pieces.
The insertion seal 7 and the hydraulic separation device 4 are in inserted butt joint.
The sealing module 701 is a sealing module vulcanized by high-abrasion-resistance metal.
The working process is as follows: 1) early stage subsection sand control operation (according to the horizontal section subsection condition, a plurality of hydraulic separation devices 4 need to be preassembled); and (3) leaving the well tubular column combination: the top packer 1 is connected with a filling sliding sleeve 2, a sand control screen pipe 3, a hydraulic separation device 4, a sand control screen pipe 3, … … and a floating shoe 5.
After the sand control screen pipe 3 is lowered to a preset position in the horizontal well, the top packer 1 completes setting and releasing, the pipe column is lifted up, the filling opening 201 of the filling sliding sleeve 2 is opened, filling operation is started, quartz sand is filled in an annular space between the pipe column of the remaining well and the horizontal well, after filling is completed, the pipe column is lifted up, the filling opening 201 of the filling sliding sleeve 2 is closed, and sand control operation is completed.
2) Putting a pump down for production: and after the sand control operation is finished, the pump is taken down for production.
3) Fishing the sand control screen pipe 3: as the working time increases, some of the sand screens 3 have begun to fail, the well production is greatly reduced, and the well string needs to be salvaged. The service pipe column is lowered to the bottommost part of the well remaining pipe column, the service pipe column is lifted to the hydraulic separation device 4 at the bottommost part of the horizontal well, at the moment, the insert seal 7 on the service pipe column and the hydraulic separation device 4 at the bottommost part of the horizontal well form interference seal fit, the pressure is pressed to 30MPa from the pressure relief pipe 6 of the service pipe column, the pressure is transmitted to the shearing piston 402 through the pressure relief hole 702 and the pressure transmission hole 409 of the hydraulic separation device 4, the shearing piston 402 cuts off the pin 404 and collides with the support ring 407, the support ring 407 cuts off the pin 404 and moves backwards to the positioning step 408-1, the left-handed split thread 405 of the lower joint 403 is not fixed, so that the lower joint 403 is separated from the working barrel 401, the hydraulic separation device 4 is activated, the service pipe column is lifted, and all the hydraulic separation devices 4 on the well remaining pipe column are sequentially activated. After hydraulic separation device 4 is all activated, play the service string, go into special make-up and drag for the lance down, the fishing screw thread 11 of special make-up and drag for the lance matches with the inside box of top packer 1, salvage the inside box of top packer 1 central tube, at this moment, from top packer 1 to the sand control screen pipe 3 between the first hydraulic separation device 4 by salvage the well, go into special make-up and drag for the lance once more, it cooperates with hydraulic separation device 4's left-handed split thread 405 to salvage screw thread 11, thereby salvage the lower clutch 403 that hydraulic separation device 4 left the well after separating and one section sand control screen pipe 3 of being connected with lower clutch 403, accomplish the second section and salvage, analogize in proper order, can will leave the well string and divide the whole well of fishing of multistage.
Claims (5)
1. The utility model provides a can get formula horizontal well sand control tubular column and salvage separator, includes stays well tubular column, service tubular column and make-up and drag for the lance, stay well tubular column include top packer, fill sliding sleeve, sand control screen pipe, hydraulic separation device and float shoe, service tubular column including inserting sealed and single current valve, make-up and drag for the lance and include the top connection, prevent changeing locking mechanism, salvage screw thread and guiding plug, its characterized in that: the top packer is connected with one end of a filling sliding sleeve through threads, a filling opening is formed in one side of the filling sliding sleeve, the other end of the filling sliding sleeve is connected with one end of a sand control screen pipe through threads, a plurality of screen holes are uniformly distributed in the outer wall of the sand control screen pipe, the other end of the sand control screen pipe is connected with one end of a hydraulic separation device through threads, the other end of the hydraulic separation device is connected with the sand control screen pipe, and a floating shoe is mounted at the end part of the sand control screen pipe at the tail end; a service pipe column is inserted into the hydraulic separation device and comprises a pressure relief pipe, an insertion seal and a check valve, the end part of the pressure relief pipe is provided with the insertion seal, the insertion seal is closely matched with the hydraulic separation device, the outer wall of the insertion seal is fixed with a sealing module, one side of the insertion seal is provided with a pressure relief hole, and the end part of the insertion seal is provided with the check valve; the hydraulic separation device comprises a working cylinder, a pressure transmission hole, a shearing piston, a support ring, a left-handed split thread, a lower joint, a sealing gasket, a pin and a central shaft, one end of the working barrel is connected with a sand control screen pipe through threads, the other end of the working barrel is sleeved at one end of the lower joint, the other end of the lower joint is in threaded connection with a sand control screen pipe, the inner wall of the working barrel close to one end of the lower joint is integrally formed with a central shaft, the end part of the central shaft is provided with a positioning step, one end of the central shaft far away from the positioning step and the inner wall of the working barrel form a pressure transfer hole, the top of the central shaft is fixed with a shearing piston through a pin, one end of the shearing piston and the top of the central shaft are fixed with a supporting ring through a pin, the top of the support ring is matched with the left-handed split thread through a sealing gasket, and the left-handed split thread is arranged on the inner wall of the lower joint; the left-handed split thread and the fishing thread of the opposite-handed fishing spear are matched with each other, the opposite-handed fishing spear further comprises an upper joint, an anti-rotation locking mechanism and a guide plug, the upper joint is connected with one end of the anti-rotation locking mechanism through threads, the other end of the anti-rotation locking mechanism is provided with the guide plug through threads, the outer wall of the anti-rotation locking mechanism is sleeved with the fishing thread, and the fishing thread can slide on the outer wall of the anti-rotation locking mechanism.
2. The retrievable horizontal well sand control tubular column salvaging and separating device according to claim 1, which is characterized in that: the fishing thread is a split thread.
3. The retrievable horizontal well sand control tubular column fishing separation device according to claim 1 or 2, wherein: the fishing thread is 6 petals.
4. The retrievable horizontal well sand control tubular column salvaging and separating device according to claim 1, which is characterized in that: the insertion seal and the hydraulic separation device are in inserted butt joint.
5. The retrievable horizontal well sand control tubular column salvaging and separating device according to claim 1, which is characterized in that: the sealing module is a high-abrasion-resistance metal vulcanized sealing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536430.1A CN113931592B (en) | 2021-12-16 | 2021-12-16 | Retrievable horizontal well sand control pipe column salvaging and separating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111536430.1A CN113931592B (en) | 2021-12-16 | 2021-12-16 | Retrievable horizontal well sand control pipe column salvaging and separating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113931592A CN113931592A (en) | 2022-01-14 |
| CN113931592B true CN113931592B (en) | 2022-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111536430.1A Active CN113931592B (en) | 2021-12-16 | 2021-12-16 | Retrievable horizontal well sand control pipe column salvaging and separating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN113931592B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533332A (en) * | 2014-12-29 | 2015-04-22 | 中国石油化工股份有限公司 | Downhole string cutting and fishing integrated tool and construction method thereof |
| CN104632147A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | Segmental salvage processing sand prevention pipe column and conversion device |
| CN106522907A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Salvageable thermal production well pipe string and application method thereof |
| CN107152262A (en) * | 2016-03-04 | 2017-09-12 | 中国石油化工股份有限公司 | Multistage open-hole gravel pack sand control completion tubing string of horizontal well and method |
| CN107524427A (en) * | 2015-05-14 | 2017-12-29 | 胜利油田康贝石油工程装备有限公司 | A kind of oilfield horizontal well pipe construction method |
| CN108204226A (en) * | 2017-12-18 | 2018-06-26 | 中国石油天然气股份有限公司 | Flushing fisher and sand prevention pipe column |
| CN109113684A (en) * | 2018-10-28 | 2019-01-01 | 中国石油化工股份有限公司 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
| CN112664148A (en) * | 2021-03-18 | 2021-04-16 | 东营市福利德石油科技开发有限责任公司 | Horizontal well sand prevention completion pipe string and horizontal well rapid sand prevention completion method |
-
2021
- 2021-12-16 CN CN202111536430.1A patent/CN113931592B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632147A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | Segmental salvage processing sand prevention pipe column and conversion device |
| CN104533332A (en) * | 2014-12-29 | 2015-04-22 | 中国石油化工股份有限公司 | Downhole string cutting and fishing integrated tool and construction method thereof |
| CN107524427A (en) * | 2015-05-14 | 2017-12-29 | 胜利油田康贝石油工程装备有限公司 | A kind of oilfield horizontal well pipe construction method |
| CN106522907A (en) * | 2015-09-15 | 2017-03-22 | 中国石油化工股份有限公司 | Salvageable thermal production well pipe string and application method thereof |
| CN107152262A (en) * | 2016-03-04 | 2017-09-12 | 中国石油化工股份有限公司 | Multistage open-hole gravel pack sand control completion tubing string of horizontal well and method |
| CN108204226A (en) * | 2017-12-18 | 2018-06-26 | 中国石油天然气股份有限公司 | Flushing fisher and sand prevention pipe column |
| CN109113684A (en) * | 2018-10-28 | 2019-01-01 | 中国石油化工股份有限公司 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
| CN112664148A (en) * | 2021-03-18 | 2021-04-16 | 东营市福利德石油科技开发有限责任公司 | Horizontal well sand prevention completion pipe string and horizontal well rapid sand prevention completion method |
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| Publication number | Publication date |
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| CN113931592A (en) | 2022-01-14 |
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