CN110984901A - Blowout prevention packer for quick pumping down and well completion after fracturing - Google Patents

Blowout prevention packer for quick pumping down and well completion after fracturing Download PDF

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Publication number
CN110984901A
CN110984901A CN201911075356.0A CN201911075356A CN110984901A CN 110984901 A CN110984901 A CN 110984901A CN 201911075356 A CN201911075356 A CN 201911075356A CN 110984901 A CN110984901 A CN 110984901A
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China
Prior art keywords
sleeve
slip
packer
pin
fracturing
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CN201911075356.0A
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Chinese (zh)
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CN110984901B (en
Inventor
李琳
谢建华
张洋
王金友
唐鹏飞
毛庆波
张妍
张宏岩
张春辉
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Petrochina Co Ltd
Daqing Oilfield Co Ltd
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Petrochina Co Ltd
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Publication of CN110984901A publication Critical patent/CN110984901A/en
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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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • 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

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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)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

The invention relates to the technical field of oil field production engineering, which belongs to a well completion blowout prevention packer capable of being pumped down quickly after fracturing, and solves the problems that the pressure in a shaft rises after multi-section fracturing of an oil-water well, and no blowout prevention measure exists in the shaft after an oil pipe is pulled out, so that the pump can not be directly put into production, and the packer is composed of an upper joint (1), a first fixing pin (2), a righting press ring (3), a second fixing pin (4), a righting body (5), a first spring (6), a central pipe (7), a friction block (8), a clutch outer sleeve (9), a limiting sleeve (10), a key (11), a fixed sleeve (12), a central slip pipe (13), an upper cone (14), a slip (15), a second spring (16), a slip hanger (17), a lower cone (18), an anti-rotation pin (19), a slip hanger limiting sleeve (20), a seat sleeve (21), a; the invention has the advantages of rapid pump-down well completion after fracturing, obvious blowout prevention effect, convenient assembly of the whole set of tools and the like.

Description

Blowout prevention packer for quick pumping down and well completion after fracturing
Technical Field
The invention relates to the technical field of oil field oil extraction engineering, and belongs to a blowout prevention packer for quick pumping down and well completion after fracturing.
Background
The pressure in the shaft rises after the oil-water well multi-section fracturing, and the shaft can not be directly pumped down for production without blowout prevention measures after the oil pipe is lifted out, and generally the pump can be pumped down after the pressure is diffused. At present, a packer for realizing blowout prevention of a shaft is required to be invented without a quick pump-down well completion blowout prevention packer after fracturing, and meanwhile, construction procedures and cost are not increased, so that shaft blowout prevention is realized when a multi-section quick pump-down packer after fracturing is used, and the production period is shortened.
Disclosure of Invention
The invention aims to provide a blowout prevention packer capable of realizing environment-friendly pipe string lifting after fracturing, quickly pumping down to obtain yield, ensuring safe and effective construction before and after fracturing and stable setting, releasing and deblocking for well completion after fracturing.
The invention is realized by the following measures: the slip type slip releasing device consists of an upper joint, a first fixing pin, a centering pressing ring, a second fixing pin, a centering body, a first spring, a central pipe, a friction block, a clutch outer sleeve, a limiting sleeve, a key, a fixing sleeve, a slip central pipe, an upper cone, a slip, a second spring, a slip hanger, a lower cone, an anti-rotation pin, a slip hanger limiting sleeve, a setting sleeve, a salvaging sleeve, a deblocking pin, a deblocking sleeve, a locking ring, a rubber cylinder retaining ring, a rubber cylinder sleeve, a limiting ring, a lower joint, a releasing sleeve and a releasing pin; wherein the limiting sleeve is connected with a central tube (a screw thread, the upper end of a friction block is connected with a righting press ring screw thread, a spring I is arranged in the righting body and the friction block, the upper end of the righting body is connected with the righting press ring through a fixing pin II, the righting press ring is connected with an upper joint screw thread, an upper joint, the righting press ring, the righting body, the spring I and the friction block are arranged on the outer side of the central tube, the upper joint is connected with the central tube screw thread and fixed by the fixing pin I, the lower end of the friction block is connected with a clutch outer sleeve screw thread, the lower end of the friction block is connected with the clutch outer sleeve through the fixing pin II, a slip key is arranged in a groove connected with the central tube and a slip central tube, the slip central tube is connected with the fixing sleeve screw thread, the outer side of the slip central tube is connected with an upper cone through a T-shaped screw thread, the, the outside of the central pipe is in contact connection with the fishing sleeve, the deblocking sleeve is fixed on the fishing sleeve by the deblocking pin, the locking ring is fixed with the deblocking sleeve by the anti-rotation pin, one side of the setting sleeve is connected with a lower cone through a T-shaped buckle, the other side of the setting sleeve is connected with a locking ring screw thread, the bottom end of the setting sleeve is connected with a rubber sleeve retaining ring screw thread, the lower joint is connected with the outside of the fishing sleeve by screw threads, the outside of the lower joint is sequentially connected with a rubber sleeve and a limiting ring by screw threads, and the releasing sleeve is connected with the central pipe by screw threads and fixed by a releasing.
The clutch outer sleeve and the slip hanger are designed to be in clutch connection.
The upper cone and the lower cone are designed into T-shaped buckles.
The key and the slip center tube are designed to be clutched.
The rubber sleeve is designed as a single rubber sleeve.
Compared with the prior art, the invention has the following advantages:
the invention has the advantages of rapid pumping and well completion after well killing, obvious blowout prevention effect, convenient assembly of the whole set of tools, capability of setting and unsealing according to actual construction requirements, effective avoidance of accidental setting and unsealing, reduction of operation risks and improvement of construction efficiency.
Description of the drawings: FIG. 1 is a schematic diagram of the present invention.
In the figure, 1-upper joint, 2-first fixed pin, 3-righting press ring, 4-second fixed pin, 5-righting body, 6-first spring, 7-central tube, 8-friction block, 9-clutch jacket, 10-spacing sleeve, 11-key, 12-fixing sleeve, 13-central tube of slip, 14-upper cone, 15-slip and 16-second spring, 17-a slip hanger, 18-a lower cone, 19-an anti-rotation pin, 20-a slip hanger limiting sleeve, 21-a setting sleeve, 22-a fishing sleeve, 23-an unsealing pin, 24-an unsealing sleeve, 25-a locking ring, 26-a rubber cylinder retaining ring, 27-a rubber cylinder sleeve, 28-a limiting ring, 29-a lower joint, 30-a throwing sleeve and 31-a releasing pin.
Figure DEST_PATH_IMAGE002
The specific implementation mode is as follows: the invention will be further described with reference to the accompanying drawings in which: the slip type slip ring comprises an upper joint 1, a first fixed pin 2, a righting press ring 3, a second fixed pin 4, a righting body 5, a first spring 6, a central pipe 7, a friction block 8, a clutch outer sleeve 9, a limiting sleeve 10, a key 11, a fixed sleeve 12, a slip central pipe 13, an upper cone 14, a slip 15, a second spring 16, a slip hanger 17, a lower cone 18, an anti-rotation pin 19, a slip hanger limiting sleeve 20, a setting sleeve 21, a salvaging sleeve 22, an unsealing pin 23, an unsealing sleeve 24, a locking ring 25, a rubber sleeve baffle ring 26, a rubber sleeve 27, a limiting ring 28, a lower joint 29, a releasing sleeve 30 and a releasing pin 31; wherein the limiting sleeve 10 is connected with the central tube 7 by screw thread, the upper end of the friction block 8 is connected with the righting press ring 3 by screw thread, the spring I6 is arranged in the righting body 5 and the friction block 8, the upper end of the righting body 5 is connected with the righting press ring 3 by the fixing pin II 4, the righting press ring 3 is connected with the upper joint 1 by screw thread, the upper joint 1, the righting press ring 3, the righting body 5, the spring I6 and the friction block 8 are arranged outside the central tube 7, the upper joint 1 is connected with the central tube 7 by screw thread and fixed by the fixing pin I2, the lower end of the friction block 8 is connected with the clutch outer sleeve 9 by screw thread, the lower end of the friction block 8 is connected with the clutch outer sleeve 9 by the fixing pin II 4, the key 11 is arranged in a groove connected with the central tube 7 and the slip 13, the slip 13 is connected with the fixing sleeve 12 by screw thread, the outside of the slip central tube 14, A second spring 16, a slip hanger 17 and a lower cone 18, wherein a slip hanger limiting sleeve 20 is connected with the slip hanger 17 through a second fixing pin 4, the outer side of the central pipe 7 is in contact connection with a salvaging sleeve 22, a deblocking sleeve 24 is fixed on the salvaging sleeve 22 through a deblocking pin 23, a locking ring 25 is fixed with the deblocking sleeve 24 through a rotation preventing pin 19, one side of a setting sleeve 21 is connected with the lower cone 18 through a T-shaped buckle, the other side of the setting sleeve 21 is in threaded connection with the locking ring 25, the bottom end of the setting sleeve 21 is in threaded connection with a rubber sleeve retaining ring 26, and a lower joint 29 and a beating joint 29 are connectedThe outer side of the fishing sleeve 22 is connected with a screw thread, the outer side of the lower joint 29 is sequentially connected with a rubber sleeve 27 and a limiting ring 28 through the screw thread, and a releasing sleeve 30 is connected with the central pipe 7 through the screw thread and fixed through a releasing pin 31.
The clutch type connection design of the clutch outer sleeve 9 and the slip hanger 17 prevents the setting when the pipe column is put in, and improves the setting success rate.
The T-buckles of the upper cone 15 and lower cone 20 are designed to anchor the cone support slips 15 by rotating to convert the rotational motion into a linear feed motion.
The clutch type design of the key 11 and the slip central tube 13 can effectively transmit torque and realize releasing and releasing.
The glue cartridge sleeve 27 is a single glue cartridge design, which is relatively short, easy to recycle during deblocking, and has low residual deformation.
Figure DEST_PATH_IMAGE004
When the anti-blowout device is used on site, the clutch outer sleeve 9 and the slip hanger 17 are opened, the anti-blowout device and a dead plug are put into a well together with a packer, the friction block 8 is tightly contacted with a sleeve together through friction force under the action of the spring I6, when a pipe column is fractured and other tools are lifted out of the ground, the pipe column is put down when the anti-blowout device needs to be left in the well for well shaft anti-blowout, the clutch outer sleeve 9 and the slip hanger 17 are buckled, at the moment, the pipe column is rotated, the slip 15 is respectively downwards and upwards extruded by the upper cone 14 and the lower cone 18 through the T-shaped buckles, and the slip 15 is clamped on the sleeve to play a role in anchoring; and (3) continuing rotating the pipe column, leading the locking ring 25 to move upwards, driving the deblocking sleeve 24, the rubber sleeve baffle ring 26, the rubber sleeve 27, the limiting ring 28 and the lower joint 29 to move upwards together, compressing the rubber sleeve 27 for setting, lifting the central pipe 7 by the lower fishing tool to cut the releasing pin 31, driving the upper joint 1, the first fixed pin 2, the righting compression ring 3, the second fixed pin 4, the righting body 5, the first spring 6 and the friction block 8 to release by the central pipe 7, and realizing blowout prevention of the shaft. When the well is completed, the fishing sleeve 22 is lifted upwards, the deblocking pin 23 is cut off, the spring claw on the deblocking sleeve 24 is opened, the rubber sleeve 27 rebounds downwards for deblocking, meanwhile, the spring claw on the slip central pipe 13 is opened, and the upper cone 14 and the lower cone 18 respectively loosen the blocking upwards and downwards through the T-shaped buckleThe tile 15 and the slip 15 are withdrawn, the invention is pushed to the designed position, and normal water injection or oil production completion is realized.

Claims (5)

1. The utility model provides a pump completion blowout prevention packer down fast after fracturing which characterized in that: the slip type slip setting device comprises an upper joint (1), a first fixing pin (2), a righting press ring (3), a second fixing pin (4), a righting body (5), a first spring (6), a central pipe (7), a friction block (8), a clutch outer sleeve (9), a limiting sleeve (10), a key (11), a fixing sleeve (12), a slip central pipe (13), an upper cone (14), a slip (15), a second spring (16), a slip hanger (17), a lower cone (18), an anti-rotation pin (19), a slip hanger limiting sleeve (20), a setting sleeve (21), a salvaging sleeve (22), a deblocking pin (23), a deblocking sleeve (24), a locking ring (25), a rubber sleeve retaining ring (26), a rubber sleeve (27), a limiting ring (28), a lower joint (29), a releasing sleeve (30) and a releasing pin (31); wherein the limiting sleeve (10) is connected with the central tube (7) in a threaded manner, the upper end of the friction block (8) is connected with the centering press ring (3) in a threaded manner, the spring I (6) is arranged in the centering body (5) and the friction block (8), the upper end of the centering body (5) is connected with the centering press ring (3) through the fixing pin II (4), the centering press ring (3) is connected with the upper joint (1) in a threaded manner, the upper joint (1), the centering press ring (3), the centering body (5), the spring I (6) and the friction block (8) are arranged on the outer side of the central tube (7), the upper joint (1) is connected with the central tube (7) in a threaded manner and fixed by the fixing pin I (2), the lower end of the friction block (8) is connected with the clutch outer sleeve (9) in a threaded manner, the lower end of the friction block (8) is connected with the clutch outer sleeve (9) through the fixing pin II (4), the key (11) is arranged in a groove connected with the, the slip central tube (13) is in threaded connection with the fixed sleeve (12), the outer side of the slip central tube (14) is in T-shaped threaded connection with the upper cone (15), the lower end of the upper cone (14) is sequentially connected with the slip (15), the spring II (16), the slip hanger (17) and the lower cone (18), the slip hanger limiting sleeve (20) is connected with the slip hanger (17) through the fixed pin II (4), the outer side of the central tube (7) is in contact connection with the fishing sleeve (22), the releasing sleeve (24) is fixed on the fishing sleeve (22) through the releasing pin (23), the locking ring (25) is fixed with the releasing sleeve (24) through the anti-rotating pin (19), one side of the sitting sleeve (21) is connected with the lower cone (18) through the T-shaped thread, the other side of the sitting sleeve (21) is in threaded connection with the locking ring (25), the bottom end of the sitting sleeve (21) is in threaded connection with the rubber sleeve stop ring (26), and the lower joint (29) is in threaded connection with, the outer side of the lower joint (29) is sequentially connected with a rubber sleeve (27) and a limiting ring (28) in a threaded manner, and a throwing glove (30) is connected with the central pipe (7) in a threaded manner and fixed by a releasing pin (31).
2. The packer of claim 1, wherein the packer is configured to be used for rapid pump-down completion blowout prevention after fracturing, and is characterized in that: the clutch outer sleeve (9) and the slip hanger (17) are designed to be in clutch connection.
3. The packer of claim 1, wherein the packer is configured to be used for rapid pump-down completion blowout prevention after fracturing, and is characterized in that: the upper cone (15) and the lower cone (20) are designed as T-shaped buckles.
4. The packer of claim 1, wherein the packer is configured to be used for rapid pump-down completion blowout prevention after fracturing, and is characterized in that: the key (11) and the slip central tube (13) are designed to be in a clutch connection.
5. The packer of claim 1, wherein the packer is configured to be used for rapid pump-down completion blowout prevention after fracturing, and is characterized in that: the glue cartridge sleeve (27) is designed as a single glue cartridge.
CN201911075356.0A 2019-11-06 2019-11-06 Blowout prevention packer for quick pumping down and well completion after fracturing Active CN110984901B (en)

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Citations (20)

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US2862735A (en) * 1950-08-19 1958-12-02 Hydril Co Kelly packer and blowout preventer
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US2862735A (en) * 1950-08-19 1958-12-02 Hydril Co Kelly packer and blowout preventer
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CN104563947A (en) * 2014-12-22 2015-04-29 中国石油天然气股份有限公司 Downhole blowout preventing pipe column for oil well
CN107355192A (en) * 2016-05-10 2017-11-17 辽宁新华仪器有限公司 A kind of screw pump anti-blowout anchoring tool
CN109958422A (en) * 2019-04-19 2019-07-02 中国石油天然气股份有限公司 One kind being suitable for huge discharge pressure and drives anti-spray anti-clip technique

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Effective date of registration: 20211220

Address after: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue

Patentee after: Daqing Oilfield Co.,Ltd.

Patentee after: PetroChina Company Limited

Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue

Patentee before: Daqing Oilfield Co.,Ltd.