CN108301804B - Slip expansion type deepwater packer - Google Patents
Slip expansion type deepwater packer Download PDFInfo
- Publication number
- CN108301804B CN108301804B CN201810342494.XA CN201810342494A CN108301804B CN 108301804 B CN108301804 B CN 108301804B CN 201810342494 A CN201810342494 A CN 201810342494A CN 108301804 B CN108301804 B CN 108301804B
- Authority
- CN
- China
- Prior art keywords
- slip
- rubber cylinder
- central tube
- friction
- packer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 7
- 208000002697 Tooth Abrasion Diseases 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
- E21B33/1291—Packers; Plugs with mechanical slips for hooking into the casing anchor set by wedge or cam in combination with frictional effect, using so-called drag-blocks
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
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)
- Earth Drilling (AREA)
Abstract
The invention relates to a slip expansion type deepwater packer, and belongs to the technical field of deep sea oil and gas drilling and production operation equipment. The packer comprises an upper joint, a friction reversing piece, a central pipe and slips; one end of the central tube is provided with a lower joint, and the other end is provided with an upper joint; the slip seat is slidably arranged on the central tube between the upper joint and the lower joint, the rubber cylinder A and the rubber cylinder B are arranged on the central tube on one side of the slip seat through the compression ring, and the slips are arranged on the central tube on the other side of the slip seat through the slip limiting sleeve and the pin. The packer is simple in structure and high in reliability, the problem that the sealing performance is poor due to shoulder protrusion on the end face of the rubber cylinder when the packer is plugged and sealed can be effectively avoided, and meanwhile the problems that the plugging efficiency is low, the sealing performance is poor, the slips fail and the like are caused by friction and clamping, tooth abrasion and the like when the existing slips expand and lock the cylinder wall, and the stratum environment is polluted and damaged are solved; is particularly suitable for deep sea oil and gas drilling operation.
Description
Technical Field
The invention relates to a slip expansion type deepwater packer, and belongs to the technical field of deep sea oil and gas drilling and production operation equipment.
Background
In actual operation, the existing packer has the problems of poor tightness and the like caused by shoulder phenomenon generated on the end face of the rubber cylinder during the extrusion and the packing; meanwhile, friction blocking, tooth abrasion and other phenomena can occur in the process of expanding and locking the cylinder wall by the slips, so that the problems of low plugging efficiency, loose plugging, slip failure and the like are caused. In marine drilling and production, the deep sea oil and gas well has high requirement on stratum protection, and the poor sealing performance of the packer often causes serious stratum pollution, so that the deep sea oil and gas drilling and production operation is required to be improved for ensuring the construction safety.
Disclosure of Invention
The invention aims at: the slip expansion type deepwater packer is simple in structure and high in reliability, can effectively solve the problem that the sealing performance is poor due to shoulder protrusion of the end face of the packing element when the existing packer is plugged and sealed, and solves the problems of low plugging efficiency, poor sealing performance, slip failure, pollution and damage to stratum environment caused by friction blocking, tooth abrasion and the like when the existing slips expand and lock the cylinder wall.
The technical scheme of the invention is as follows:
slip expansion type deep water packer; comprises an upper joint, a friction reversing piece, a central tube and slips; the method is characterized in that: a lower joint is arranged at one end of the central tube in a threaded manner, and an upper joint is arranged at the other end of the central tube in a threaded manner; a slip seat is slidably arranged on the central tube between the upper joint and the lower joint, a rubber cylinder A and a rubber cylinder B are arranged on the central tube on one side of the slip seat through a compression ring, a slip is arranged on the central tube on the other side of the slip seat through a slip limiting sleeve and a pin, and a friction reversing piece is arranged on the central tube on one side of the slip limiting sleeve through a friction piece screw sleeve and a piece spring; the friction plate threaded sleeve and the slip limiting sleeve are connected with each other through a friction reversing sleeve; the slips, the leaf springs, the friction reversing sheets, the friction sheet threaded sleeves and the friction sheet threaded sleeves are respectively and movably connected with the central tube.
The clamping ring is fixed with the slip seat through a set screw, and a rubber barrel spacer ring is arranged between the rubber barrel A and the rubber barrel B.
The lengths of the rubber cylinder A and the rubber cylinder B are different, and the chamfer angles of the upper end surface and the lower end surface of the rubber cylinder A and the rubber cylinder B are different.
A plurality of centralizing balls are uniformly distributed on the circumference of the slip seat.
The slip seat is a conical body, an assembly hole is formed in the outer surface of the conical portion of the slip seat, and a supporting rod is arranged in the assembly hole through a supporting spring.
The inner surface of the slip corresponding to the supporting rod is provided with a sliding groove, and a sliding block is arranged in the sliding groove in a sliding manner; the sliding block is movably connected with the supporting rod through a pin.
The upper joint, the lower joint and the central tube are sealed by an O-shaped sealing ring.
The outer surface of the slip is provided with a latch.
The beneficial effects of the invention are as follows:
the slip expansion type deepwater packer is simple in structure and high in reliability, the problem that the sealing performance is poor due to shoulder on the end face of a rubber cylinder when the packer is plugged and sealed can be effectively avoided, and meanwhile the problems that the plugging efficiency is low, the sealing performance is poor, the slips fail and the like due to friction and clamping, tooth abrasion and the like when the existing slips expand and lock the cylinder wall are solved, and the stratum environment is polluted and destroyed are solved; is particularly suitable for deep sea oil and gas drilling operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic illustration of the construction of the slips and slip bowl of the present disclosure;
fig. 4 is an enlarged schematic view of the structure at B in fig. 3.
In the figure: 1. the friction reversing device comprises an upper joint, 2, friction reversing sheets, 3, a central tube, 4, slips, 5, a lower joint, 6, slip seats, 7, supporting springs, 8, supporting rods, 9, a compression ring, 10, rubber cylinders A,11, rubber cylinders B,12, slip limiting sleeves, 13, set screws, 14, rubber cylinder spacing rings, 15, centering balls, 16, friction sheet threaded sleeves, 17, sheet springs, 18, friction reversing sleeves, 19, sliding grooves, 20 and sliding blocks.
Detailed Description
The slip expansion type deepwater packer comprises an upper joint 1, a friction reversing sheet 2, a central pipe 3 and slips 4; a lower joint 5 is arranged at one end of the central tube 3 in a threaded manner, and an upper joint 1 is arranged at the other end of the central tube 3 in a threaded manner; the upper joint 1, the lower joint 5 and the central tube 3 are sealed by O-shaped sealing rings.
A slip seat 6 is slidably arranged on the central tube 3 between the upper joint 1 and the lower joint 5, the slip seat 6 is a conical body, the outer surface of the conical part of the slip seat 6 is provided with an assembly hole, and a supporting rod 8 is arranged in the assembly hole through a supporting spring 7; a plurality of centralizing balls 15 are uniformly distributed on the circumference of the slip seat 6; to ensure that the slip-expanding deep water packer is always in a centered position during operation.
A packing element A10 and a packing element B11 are arranged on the central tube 3 at one side of the slip seat 6 through a compression ring 9, the compression ring 9 is fixed with the slip seat 6 through a set screw 13, and a packing element spacing ring 14 is arranged between the packing element A10 and the packing element B11.
The lengths of the rubber cylinder A10 and the rubber cylinder B11 are different, and the upper end face chamfer and the lower end face chamfer of the rubber cylinder A10 and the rubber cylinder B11 adopt different angles; the upper and lower parts of the rubber cylinder A10 and the rubber cylinder B11 are provided with net-shaped steel wire frameworks; therefore, the problem of poor tightness caused by shoulder protruding of the end face of the rubber cylinder can be effectively avoided during working.
A slip 4 is arranged on the central tube 3 at the other side of the slip seat 6 through a slip limiting sleeve 12 and a pin, and a latch is arranged on the outer surface of the slip 4; the cone angle of the latch is 30 degrees; the upper end of the cross section of the latch is elliptical, and the lower end of the cross section of the latch is circular.
The center tube 3 at one side of the slip limiting sleeve 12 is provided with a friction reversing piece 2 through a friction piece threaded sleeve 16 and a piece spring 17; the friction plate threaded sleeve 16 and the slip limiting sleeve 12 are connected with each other through a friction reversing sleeve 18; the slips 4, the leaf springs 17, the friction reversing sheets 2, the friction reversing sleeves 18 and the friction sheet threaded sleeves 16 of the slip expansion type deepwater packer are respectively connected with the central pipe 3 in a sliding mode.
The inner surface of the slips 4 corresponding to the support rod 8 of the slip expansion type deepwater packer is provided with a sliding groove 19, and a sliding block 20 is slidably arranged in the sliding groove 19; is movably connected with the connecting rod through a pin.
The purpose of the connection of the slide 20 to the support rod 8 is to provide a certain clearance between the slips 4 and the slip bowl 6, which clearance is filled with lubricating oil.
When the slip expansion type deepwater packer works, the slip expansion type deepwater packer is connected to a pipe column in series through an upper joint 1 and a lower joint 5 and is put into a borehole through the pipe column, after the pipe column is put into a preset position, an oil pipe is lifted to a certain height to be dextrorotation, the pipe column is put down while the dextrorotation torque is kept, at the moment, the cone part of a slip seat 6 gradually expands the slip 4, so that the slip 4 clamps the inner wall of the casing, meanwhile, the slip seat 6 compresses a rubber cylinder through a compression ring 9 to expand and deform, setting is realized, and because the lengths of the rubber cylinder A10 and the rubber cylinder B11 are unequal, and the upper end face chamfer and the lower end face chamfer of the rubber cylinder A10 and the rubber cylinder B11 adopt different angles; the upper and lower parts of the rubber cylinder A10 and the rubber cylinder B11 are provided with net-shaped steel wire frameworks; the problem of poor sealing performance caused by shoulder protruding of the end face of the rubber cylinder can be effectively avoided when the rubber cylinder A10 and the rubber cylinder B11 work, and the sealing performance of setting is improved; the problems of low plugging efficiency, poor sealing performance, slip failure and the like caused by friction and clamping, tooth abrasion and the like when the existing slips expand and lock the cylinder wall are solved, and the problems of pollution and damage to stratum environment are avoided. The slip expansion type deepwater packer has the characteristics of simple structure and high reliability; is particularly suitable for deep sea oil and gas drilling operation.
Claims (3)
1. Slip expansion type deep water packer; comprises an upper joint (1), a friction reversing sheet (2), a central pipe (3) and slips (4); a lower joint (5) is arranged at one end of the central tube (3) in a threaded manner, and an upper joint (1) is arranged at the other end of the central tube (3) in a threaded manner; the method is characterized in that: a slip seat (6) is slidably arranged on a central tube (3) between the upper joint (1) and the lower joint (5), a rubber cylinder A (10) and a rubber cylinder B (11) are arranged on the central tube (3) on one side of the slip seat (6) through a compression ring (9), a slip (4) is arranged on the central tube (3) on the other side of the slip seat (6) through a slip limit sleeve (12) and a pin, and a friction reversing piece (2) is arranged on the central tube (3) on one side of the slip limit sleeve (12) through a friction piece screw sleeve (16) and a piece spring (17); the friction plate threaded sleeve (16) and the slip limiting sleeve (12) are connected with each other through a friction reversing sleeve (18); the slips (4), the leaf springs (17), the friction reversing sheets (2), the friction sheet threaded sleeves (16) and the friction reversing sleeves (18) are respectively and movably connected with the central tube (3);
the lengths of the rubber cylinder A (10) and the rubber cylinder B (11) are different, the chamfer angles of the upper end face and the lower end face of the rubber cylinder A (10) and the chamfer angles of the lower end face of the rubber cylinder B (11) are different, and net-shaped steel wire frameworks are arranged at the upper part and the lower part of the rubber cylinder A (10) and the lower part of the rubber cylinder B (11), so that the problem of poor sealing performance caused by shoulder protruding of the end faces of the rubber cylinders can be effectively avoided during working;
a plurality of centralizing balls (15) are uniformly distributed on the circumference of the slip seat (6);
the slip seat (6) is a conical body, an assembly hole is formed in the outer surface of the conical part of the slip seat (6), and a supporting rod (8) is arranged in the assembly hole through a supporting spring (7);
the inner surface of the slip (4) corresponding to the supporting rod (8) is provided with a sliding groove (19), and a sliding block (20) is arranged in the sliding groove (19) in a sliding manner; the sliding block (20) is movably connected with the supporting rod (8) through a pin column; so that a certain interval exists between the slips (4) and the slip bowl (6), and the interval is filled with lubricating oil;
the clamping ring (9) is fixed with the slip seat (6) through a set screw (13), and a rubber cylinder spacer ring (14) is arranged between the rubber cylinder A (10) and the rubber cylinder B (11).
2. The slip-expanding deep water packer of claim 1, wherein: the outer surface of the slip (4) is provided with a latch.
3. The slip-expanding deep water packer of claim 1, wherein: the upper joint (1), the lower joint (5) and the central tube (3) are sealed by an O-shaped sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342494.XA CN108301804B (en) | 2018-04-17 | 2018-04-17 | Slip expansion type deepwater packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810342494.XA CN108301804B (en) | 2018-04-17 | 2018-04-17 | Slip expansion type deepwater packer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108301804A CN108301804A (en) | 2018-07-20 |
| CN108301804B true CN108301804B (en) | 2024-03-22 |
Family
ID=62848504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810342494.XA Active CN108301804B (en) | 2018-04-17 | 2018-04-17 | Slip expansion type deepwater packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108301804B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075389B (en) * | 2020-03-01 | 2024-04-30 | 长江大学 | Packer with radial support function |
| CN113123755B (en) * | 2021-05-10 | 2022-02-18 | 盐城市崇达石化机械有限公司 | Double-acting packer for oil well pipeline |
| CN113567068B (en) * | 2021-07-24 | 2024-05-17 | 西南石油大学 | Device and method for testing sealing performance parameters of oil-gas well packer |
| CN118008200A (en) * | 2024-04-08 | 2024-05-10 | 陕西海格瑞恩实业有限公司 | All-metal magnesium alloy ball seat |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU55015U1 (en) * | 2006-01-11 | 2006-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | DEVICE FOR PROCESSING AND SAVING COLLECTOR PROPERTIES OF THE FORM |
| CN201190550Y (en) * | 2008-04-30 | 2009-02-04 | 大庆油田有限责任公司 | Self-strengthening balancing water-shutoff packer for horizontal well |
| CN201738868U (en) * | 2010-08-27 | 2011-02-09 | 刘玉珠 | Double-group sealed high-pressure water-injection packer |
| CN103883277A (en) * | 2014-04-01 | 2014-06-25 | 中国海洋石油总公司 | Thermal recovery seal assembly |
| CN205078223U (en) * | 2015-09-08 | 2016-03-09 | 中国石油化工股份有限公司 | Highly deviated well packer |
| CN205225165U (en) * | 2015-11-30 | 2016-05-11 | 中国石油天然气股份有限公司 | Resin packer |
| CN106285550A (en) * | 2015-05-27 | 2017-01-04 | 王洪青 | A kind of anti-male member |
| CN208057084U (en) * | 2018-04-17 | 2018-11-06 | 长江大学 | A kind of slips expanding deep water packer |
-
2018
- 2018-04-17 CN CN201810342494.XA patent/CN108301804B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU55015U1 (en) * | 2006-01-11 | 2006-07-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | DEVICE FOR PROCESSING AND SAVING COLLECTOR PROPERTIES OF THE FORM |
| CN201190550Y (en) * | 2008-04-30 | 2009-02-04 | 大庆油田有限责任公司 | Self-strengthening balancing water-shutoff packer for horizontal well |
| CN201738868U (en) * | 2010-08-27 | 2011-02-09 | 刘玉珠 | Double-group sealed high-pressure water-injection packer |
| CN103883277A (en) * | 2014-04-01 | 2014-06-25 | 中国海洋石油总公司 | Thermal recovery seal assembly |
| CN106285550A (en) * | 2015-05-27 | 2017-01-04 | 王洪青 | A kind of anti-male member |
| CN205078223U (en) * | 2015-09-08 | 2016-03-09 | 中国石油化工股份有限公司 | Highly deviated well packer |
| CN205225165U (en) * | 2015-11-30 | 2016-05-11 | 中国石油天然气股份有限公司 | Resin packer |
| CN208057084U (en) * | 2018-04-17 | 2018-11-06 | 长江大学 | A kind of slips expanding deep water packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108301804A (en) | 2018-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108301804B (en) | Slip expansion type deepwater packer | |
| CN110617026B (en) | Downhole operation device and method | |
| CN201650147U (en) | Hydraulic casing centralizer | |
| CN202381036U (en) | Suspension type squeezing bridge plug | |
| CN102937008B (en) | Top multistage pressure-bearing expansion pipe expansion construction device | |
| CN208057084U (en) | A kind of slips expanding deep water packer | |
| CN108625816B (en) | Gravity hydraulic combined double-seal packer | |
| CN215520816U (en) | Mechanical rotation seat sealing type leather cup packer | |
| US20140251634A1 (en) | Subsea Wellhead System With Hydraulically Set Seal Assemblies | |
| US20140084547A1 (en) | High pressure seal back-up | |
| CN212428714U (en) | Full-sealing soluble bridge plug for well sealing | |
| CN209942783U (en) | High-temperature high-pressure oil and gas well open hole section packing well completion device | |
| CN110593802B (en) | Metal sealing packing device | |
| US20120298349A1 (en) | Packer for Sealing Against a Wellbore Wall | |
| CN116378630A (en) | High-temperature high-pressure test packer suitable for small well bore with bypass | |
| CN113236163A (en) | Mechanical rotation seat sealing type leather cup packer | |
| CN203702076U (en) | Combined rubber sleeve packer | |
| CN203879448U (en) | Casing protected gas injection packer for CO2 injection well | |
| CN110965957B (en) | Blocking tool in oil pipe | |
| CN114439410A (en) | Wellhead blowout prevention packer and using method thereof | |
| US20140015201A1 (en) | High pressure seal back-up | |
| CN220059503U (en) | Permanent packer | |
| CN214576889U (en) | Wellhead blowout prevention packer | |
| CN216714349U (en) | Mechanical packer for groundwater remediation | |
| CN220226806U (en) | Suspension setting tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |