CN114753788B - Integrated pipe column suitable for sand prevention well completion flushing and sealing inspection and operation method thereof - Google Patents
Integrated pipe column suitable for sand prevention well completion flushing and sealing inspection and operation method thereof Download PDFInfo
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- CN114753788B CN114753788B CN202210368365.4A CN202210368365A CN114753788B CN 114753788 B CN114753788 B CN 114753788B CN 202210368365 A CN202210368365 A CN 202210368365A CN 114753788 B CN114753788 B CN 114753788B
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- seal
- flushing
- piston
- sealing
- well
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- 238000011010 flushing procedure Methods 0.000 title claims abstract description 57
- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 239000004576 sand Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002265 prevention Effects 0.000 title claims abstract description 10
- 238000007689 inspection Methods 0.000 title claims description 26
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 9
- 238000010008 shearing Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000003129 oil well Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 15
- 238000002955 isolation Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
- E21B34/142—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools unsupported or free-falling elements, e.g. balls, plugs, darts or pistons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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)
- Examining Or Testing Airtightness (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a flushing and sealing integrated pipe column suitable for sand prevention completion and an operation method thereof, wherein the pipe column comprises an oil pipe, a positioning seal, a rupture disc type insertion seal, a sliding sleeve type flushing switch tool and a guide shoe; the flushing and sealing checking function of the multi-stage packer sealing cylinder is realized through the flushing and sealing checking integrated pipe column suitable for sand prevention well completion, so that the well repairing time is improved; the sliding sleeve type switch flushing tool adopts a piston+V disc design, so that zero leakage of the central tube is realized, and the sealing effect of the packer is verified.
Description
Technical Field
The invention belongs to the technical field of oilfield development and production, and particularly relates to a flushing and sealing integrated tubular column suitable for sand prevention completion and an operation method thereof.
Background
The oil field of Bohai sea in 2021 is built as the first crude oil production base in China, and the oil field of Bohai sea currently has a development production well 3700 and Yu Jing times, and the annual well repair and production well production is over 400 times. At present, a sand control packer and sand control screen mode is basically adopted for the offshore oilfield layered development well. When the well repair operation is carried out, sand setting residues exist in a shaft after the original production pipe column is lifted out, sand setting and the like in the shaft are required to be washed, meanwhile, in order to ensure the integrity of the underground packer sealing cylinder, the underground sand control packer sealing cylinder is required to be subjected to seal checking, and the layering effect is ensured. At present, two pipe columns are adopted for flushing and seal inspection at sea, so that well repairing time is low, research and application of flushing seal inspection integrated technology and CN 206174924U patent of paper are conducted on a flushing seal inspection integrated tool, an integrated solution scheme is provided, and after flushing is finished, a ball seat is not tightly sealed, so that the seal inspection effect is not obvious.
Disclosure of Invention
In order to solve the problems, the invention provides an integrated pipe column suitable for sand prevention well completion flushing and sealing inspection, which realizes the flushing and multi-layer packer sealing cylinder sealing inspection function by using one pipe column through the pipe column process design and the key tool design, and simultaneously ensures zero leakage of a central pipe during sealing inspection, thereby improving sealing inspection accuracy.
The aim of the invention is achieved by the following technical scheme.
The flushing and seal inspection integrated pipe column suitable for sand prevention well completion comprises an oil pipe, a positioning seal, a rupture disc type insertion seal, a sliding sleeve type flushing switch tool and a guide shoe;
the oil pipe is provided with a positioning seal, a rupture disc type insert seal and a sliding sleeve type flushing switch tool from top to bottom, and the lower end of the oil pipe is provided with a guide shoe;
the rupture disc type insert seal comprises an insert seal body, an insert seal module and a rupture disc, wherein an overflow hole is formed in the middle cylinder wall of the insert seal body, the outside of the overflow hole is provided with the rupture disc, the rupture disc is fixed between a press cap and a check hole by the press cap, the insert seal body is positioned at the upper part and the lower part of the overflow hole and is provided with the insert seal module, and the insert seal body comprises an upper insert seal and a lower insert seal;
the sliding sleeve type flushing switch tool comprises an upper joint, a lower joint and a piston, wherein the upper joint is connected with the lower joint, the lower part of the upper joint is arranged in the lower joint, the lower end of the upper joint is provided with a plug, a central flow passage is formed in the cylinder wall of the lower part of the upper joint, the piston is arranged in the upper joint, the piston is connected with the inner wall of the upper joint through a shearing pin, a ball seat is arranged at the upper end of the piston, and a V-shaped disc is arranged on the cylinder wall of the piston to be sealed.
In the above technical scheme, the upper part of the insert seal body is provided with an insert seal upper joint.
An operation method suitable for a sand control well completion flushing and sealing integrated tubular column comprises the following steps:
when the underground layered sand control completion well repair operation is performed, the original well pipe column is lifted out, the underground is required to be washed, and meanwhile, the underground layered packer sealing cylinder is required to be subjected to seal inspection. The integrated pipe column is suitable for sand prevention well completion flushing and seal checking, the guide shoe reaches the positioning sealing position to start pressing the central pipe in the pipe column running process, the well flushing liquid flows through all underground tool central channels from the central pipe flow to reach the sliding sleeve type flushing switch tool, flows into the annular space of the double-layer structure through the piston cavity inner channel to the piston bottom and through the through-flow channel arranged at the piston bottom, continuously flows downwards to the guide shoe, well flushing operation is performed, the pipe column gradually runs down to the artificial bottom hole in the well flushing process, and well flushing operation is completed. After the locating seal at the bottom of the well is put into place, the locating seal is matched with the top packer, a shearing ball is put into the well mouth, the shearing ball falls to the ball seat, or the piston ball seat is matched, the central pipe is pressed by 8MPa, a piston in the sliding sleeve type switch flushing tool is pushed to shear a pin structure, the piston moves downwards, a central channel is closed, and the pressure of the central pipe is suppressed. And pressing the oil sleeve annulus, and verifying the sealing effect of the top packer. After the top packer is tested, the injection pressure of the central pipe is increased to 12MPa, the integrated pipe column type inserted sealing rupture disc is broken, the inserted sealing test function is realized, and the test operation is finished from bottom to top by lifting gradually. After the seal inspection operation is completed, the pipe column is lifted up, and the flushing and seal inspection operation is completed.
The whole operation steps are as follows: the method comprises the steps of sequentially connecting an integrated tubular column tool with a wellhead, lowering the tubular column into a sand washing position, forward and circularly washing the wellhead to the bottom of the well, throwing balls at the wellhead, pressing 8MPa pistons at the wellhead to shear pins at the wellhead, closing a flushing tool channel, pressing an oil sleeve annulus, checking and sealing a top packer, releasing the oil sleeve annulus, pressing 12MPa at the wellhead, inserting a sealing rupture disc for opening, lifting the tubular column one by one to check and seal an isolation packer sealing cylinder, and lifting the integrated tubular column after the completion of checking and sealing.
The beneficial effects of the invention are as follows:
the flushing and sealing checking function of the multi-stage packer sealing cylinder is realized through the flushing and sealing checking integrated pipe column suitable for sand prevention well completion, so that the well repairing time is improved; the sliding sleeve type switch flushing tool adopts a piston+V disc design, so that zero leakage of the central tube is realized, and the sealing effect of the packer is verified.
Drawings
FIG. 1 is a schematic of the overall downhole structure of the present invention: (a) And (b) a sand control pipe column diagram of the original well, which is suitable for flushing, checking and sealing the sand control completion after the original production pipe column is pulled out.
FIG. 2 is a schematic diagram of the running of a pipe string into a sand washing position and the start of sand washing;
FIG. 3 is a schematic diagram of the completion of the sand washing of the pipe column and the beginning of the seal inspection;
FIG. 4 is a schematic illustration of a tubular string running an isolation packer seal cartridge test;
FIG. 5 is a schematic diagram of a sliding sleeve flush switch tool;
fig. 6 is a schematic view of a rupture disc insert seal.
In the figure: 1 is a top packer, 2 is a sand control screen, 3 is a first isolation packer, 4 is a second isolation packer, 5 is a third isolation packer, and 6 is an artificial well bottom; 7 is a first oil pipe, 8 is a positioning seal, 9 is a second oil pipe, 10 is a rupture disc type insertion seal, 11 is a sliding sleeve type flushing switch tool, and 12 is a guide shoe; 13 is an upper joint, 14 is a metal ball, 15 is a piston, 16 is a shear pin, 17 is a lower joint, 18 is a V-disc seal, 19 is a seal compression ring, 20 is a central flow passage, and 21 is a plug; 22 is an insert seal upper joint, 23 is an insert seal body, 24 is an upper press ring, 25 is an insert seal module, 26 is a test hole, 27 is a rupture disc, and 28 is a rupture disc press cap.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
The technical scheme of the invention is further described below with reference to specific embodiments.
Example 1
Taking three layers of sand control completion as an example, a flushing and seal inspection integrated pipe column suitable for sand control completion comprises a first oil pipe 7; positioning and sealing 8; a second oil pipe 9; rupture disc insert seal 10; a sliding sleeve type flushing switch tool 11; a guide shoe 12.
The rupture disc type insert seal 10 comprises an insert seal body 23, an insert seal module 25 and a rupture disc 27, wherein an overflow hole is formed in the middle cylinder wall of the insert seal body 23, the outside of the overflow hole is provided with the rupture disc 27, the rupture disc 27 is fixed between a pressing cap and a hole checking hole by a rupture disc pressing cap 28, the insert seal body 23 is positioned at the upper part and the lower part of the overflow hole and is provided with the insert seal module 25, and the insert seal comprises an upper insert seal and a lower insert seal;
the sliding sleeve type flushing switch tool comprises an upper joint 13, a lower joint 17 and a piston 15, wherein the upper joint 13 is connected with the lower joint 17, the lower part of the upper joint 13 is arranged in the lower joint 17, a plug 21 is arranged at the lower end of the upper joint 13, a central flow passage 20 is formed in the cylinder wall of the lower part of the upper joint 13, the piston 15 is arranged in the upper joint 13, the piston 15 is connected with the inner wall of the upper joint 13 through a shearing pin 16, a ball seat is arranged at the upper end of the piston 15, and a V-shaped disc seal 18 is arranged on the cylinder wall of the piston 15.
When the underground layered sand control well completion well repairing operation is performed, the original well pipe column is lifted out, and flushing and seal checking operation is prepared. Tubing is carried out on the tubing string, the length from the tubing positioning seal 8 to the rupture disc type insertion seal 10 is required to be slightly longer than the length from the top packer 1 to the lowest isolation packer 5, meanwhile, the length from the positioning seal 8 to the guide shoe 12 is slightly shorter than the length from the top packer 1 to the artificial well bottom 6, the tubing string is connected according to tubing sequence, the tubing string is lowered, and when the guide shoe 12 reaches the position of the top packer 1, the tubing 7 is connected with a high-pressure water injection manifold to carry out positive circulation flushing.
Flushing fluid first oil pipe 7, location seal 8, second oil pipe 9, rupture disc insert seal 10, etc. the internal diameter of instrument reaches sliding sleeve formula flushing switch instrument 11 department, through piston 15 inner space, flow to central through-flow channel 20 department, and through annular space, finally flow out through lower clutch 17, finally reach guide shoe 12 department, wash impurity such as well bottom sand setting and return to ground through the oil jacket annular space, the tubular column is gradually put down in the flushing process, final location seal 8 is accomplished with top packer 1 cooperation, guide shoe washes near artifical shaft bottom this moment, accomplish the flushing function.
Example two
On the basis of the first embodiment, after flushing is completed, top packer checking is performed according to the operation procedure requirements. And after the top packer is tested to be sealed. The metal ball 14 is put into place through the wellhead and then is matched with a ball seat at the upper end of the piston 15. The wellhead is pressed, the high-pressure liquid pushes the metal ball 14, the piston 15 is driven to move downwards, and finally the shearing pin 16 is sheared, and the piston moves downwards. The V-disc seals 18 on the upper and lower of the piston are at the ends of the central flow channel after the movement is completed, completely closing the central flow channel 20. At the moment, the central channel of the pipe column is completely closed, zero leakage of the pipe column is realized, and basic guarantee is provided for seal inspection.
Example III
On the basis of the second embodiment, the central flow channel 20 will be completely closed after the piston movement. The center tube achieves zero leakage. Continuing to press the wellhead, when the pressure reaches 12MPa, the sealing rupture disc 27 is inserted to rupture, and the verification hole 26 realizes communication between the central tube and the annulus. The pipe column is lifted up, the rupture disc type insertion seal is matched with the sealing cylinder of the third isolation packer, the upper part and the lower part of the seal checking hole are respectively provided with an insertion sealing module, if the pressure of the central pipe is not reduced, the sealing module and the sealing cylinder are well sealed, the seal checking of the sealing cylinder is normal, if the pressure of the central pipe is continuously reduced, the sealing module and the sealing cylinder are problematic, and the sealing cylinder may be damaged. After the sealing cylinder of the third isolation packer is tested, the lifting pipe column sequentially completes the sealing testing function of the second isolation packer and the first isolation packer. And lifting the tubular column after the seal inspection is completed, and enabling the central tube liquid to flow into the shaft along with the seal inspection hole 26 to complete the flushing and seal inspection functions.
The foregoing has described exemplary embodiments of the invention, it being understood that any simple variations, modifications, or other equivalent arrangements which would not unduly obscure the invention may be made by those skilled in the art without departing from the spirit of the invention.
Claims (1)
1. The operation method suitable for the sand control completion flushing and sealing integrated pipe column is characterized by comprising an oil pipe, a positioning seal, a rupture disc type insertion seal, a sliding sleeve type flushing switch tool and a guide shoe;
the oil pipe is provided with a positioning seal, a rupture disc type insert seal and a sliding sleeve type flushing switch tool from top to bottom, and the lower end of the oil pipe is provided with a guide shoe;
the rupture disc type insert seal comprises an insert seal body, an insert seal module and a rupture disc, wherein an overflow hole is formed in the middle cylinder wall of the insert seal body, the outside of the overflow hole is provided with the rupture disc, the rupture disc is fixed between a press cap and a check hole by the press cap, the insert seal body is positioned at the upper part and the lower part of the overflow hole and is provided with the insert seal module, and the insert seal body comprises an upper insert seal and a lower insert seal;
the sliding sleeve type flushing switch tool comprises an upper joint, a lower joint and a piston, wherein the upper joint is connected with the lower joint, the lower part of the upper joint is arranged in the lower joint, a plug is arranged at the lower end of the upper joint, a central through-flow channel is formed on the cylinder wall of the lower part of the upper joint, the piston is arranged in the upper joint, the piston is connected with the inner wall of the upper joint through a shearing pin, a ball seat is arranged at the upper end of the piston, and a V-shaped disc is arranged on the cylinder wall of the piston for sealing; an upper plug-in sealing connector is arranged at the upper part of the plug-in sealing body;
the operation method comprises the following steps: when the underground layered sand control completion well repair operation is performed, the original well pipe column is lifted out, the underground is required to be washed, and meanwhile, the underground layered packer sealing cylinder is subjected to seal inspection; the method comprises the steps that a sand prevention well completion flushing and seal checking integrated pipe column is started to be put into, when the pipe column is put into, a guide shoe reaches a positioning sealing position to start pressing a central pipe, normal circulation flushing is carried out on an oil well, flushing fluid flows through all underground tool central channels from the central pipe to reach a sliding sleeve type flushing switch tool, flows to the bottom of a piston through a piston cavity inner channel and flows into an annular space of a double-layer structure through a through-flow channel arranged at the bottom of the piston, continuously flows downwards to the guide shoe, well flushing operation is carried out, and when the well flushing operation is carried out, the pipe column gradually goes down to the bottom of an artificial well to finish the well flushing operation; after the positioning seal at the bottom of the well is put in place, the positioning seal is matched with the top packer, a shearing ball is put into the well mouth, the shearing ball falls to the ball seat, or the piston ball seat is matched, the central tube is pressed, a piston in the sliding sleeve type switch flushing tool is pushed to shear a pin structure, the piston moves downwards, a central channel is closed, and the pressure of the central tube is suppressed; pressing the oil sleeve annulus, and verifying the sealing effect of the top packer; after the top packer is subjected to seal inspection, the injection pressure of the central pipe is increased to break the integrated pipe column type inserted seal rupture disc, so that the seal inspection function of the inserted seal is realized, and the seal inspection operation is finished from bottom to top by lifting gradually; after the seal inspection operation is completed, the pipe column is lifted up, and the flushing and seal inspection operation is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210368365.4A CN114753788B (en) | 2022-04-08 | 2022-04-08 | Integrated pipe column suitable for sand prevention well completion flushing and sealing inspection and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210368365.4A CN114753788B (en) | 2022-04-08 | 2022-04-08 | Integrated pipe column suitable for sand prevention well completion flushing and sealing inspection and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114753788A CN114753788A (en) | 2022-07-15 |
| CN114753788B true CN114753788B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210368365.4A Active CN114753788B (en) | 2022-04-08 | 2022-04-08 | Integrated pipe column suitable for sand prevention well completion flushing and sealing inspection and operation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN114753788B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6789623B2 (en) * | 1998-07-22 | 2004-09-14 | Baker Hughes Incorporated | Method and apparatus for open hole gravel packing |
| US7950409B2 (en) * | 2007-01-30 | 2011-05-31 | Fike Corporation | Rupture disc assembly that withstands much higher back pressures than actuation pressure |
| CN202500543U (en) * | 2012-03-18 | 2012-10-24 | 荆州市赛瑞能源技术有限公司 | Hydraulic slide sleeve and pressure-bearing short connector device |
| CN103573200B (en) * | 2012-07-24 | 2016-09-14 | 中国海洋石油总公司 | A kind of technology for washing well and equipment thereof |
| CN102808594B (en) * | 2012-08-17 | 2014-10-29 | 中国海洋石油总公司 | Device and method for multi-stage layering sand prevention and well completion by one-step pipe column |
| EP2959098B1 (en) * | 2013-02-25 | 2020-05-20 | Halliburton Energy Services Inc. | Autofill and circulation assembly and method of using the same |
| CN203412562U (en) * | 2013-07-31 | 2014-01-29 | 中国石油集团西部钻探工程有限公司 | Seat-seal short joint device |
| CN104563998A (en) * | 2014-09-04 | 2015-04-29 | 杰瑞能源服务有限公司 | Multistage fracturing tool pipe column of continuous oil pipe and construction method |
| CN204357424U (en) * | 2014-12-09 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司 | Pressure control type tripping closed tieback opening downhole tool |
| CN206174924U (en) * | 2016-09-09 | 2017-05-17 | 中国海洋石油总公司 | Wash and test front cover body chemical industry utensil |
| CN112302563B (en) * | 2020-11-16 | 2022-10-11 | 中国海洋石油集团有限公司 | Ultrashort-clamping-distance water injection sand prevention packer and operation method thereof |
| CN215108838U (en) * | 2021-04-29 | 2021-12-10 | 中国海洋石油集团有限公司 | Temporary packing device for well completion operation |
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2022
- 2022-04-08 CN CN202210368365.4A patent/CN114753788B/en active Active
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| CN114753788A (en) | 2022-07-15 |
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