CN110984901B - 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 PDFInfo
- Publication number
- CN110984901B CN110984901B CN201911075356.0A CN201911075356A CN110984901B CN 110984901 B CN110984901 B CN 110984901B CN 201911075356 A CN201911075356 A CN 201911075356A CN 110984901 B CN110984901 B CN 110984901B
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- China
- Prior art keywords
- sleeve
- slip
- pin
- packer
- fracturing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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 slip connecting 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 fishing sleeve (22) and the like; 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
The technical field is as follows: 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 art: 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.
The invention content is as follows: 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 device consists of an upper joint, a first fixed pin, a centering press ring, a second fixed pin, a centering body, a first spring, a central pipe, a friction block, a clutch outer sleeve, a limiting sleeve, a key, a fixed sleeve, a slip connecting 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, an unsealing pin, an unsealing 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 pipe screw thread, the upper end of the friction block is connected with a centralizing press ring screw thread, the spring I is arranged in the centralizing body and the friction block, the upper end of the centralizing body is connected with the centralizing press ring through a fixing pin II, the centralizing press ring is connected with an upper joint screw thread, the upper joint, the centralizing press ring, the centralizing body, the spring I and the friction block are arranged outside the central pipe, the upper joint is connected with the central pipe 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 connecting pipe is arranged in a groove connected with the central pipe and a slip connecting pipe, the slip connecting pipe is connected with the fixing sleeve screw thread, the outer side of the slip connecting pipe is connected with the upper cone through a T-shaped screw thread, the lower end of the upper cone is sequentially connected with a slip, a spring II, a lower cone, the slip hanging limiting sleeve is connected with a slip hanging sleeve through the slip hanging sleeve, the outer side of the central pipe is in contact connection with a fishing sleeve, the unpacking sleeve is fixed on the fishing sleeve through an unpacking pin, the locking ring is fixed with the unpacking sleeve through an anti-rotating pin, one side of the setting sleeve is connected with the lower cone through a T-shaped buckle, the other side of the setting sleeve is connected with a screw thread of the locking ring, the bottom end of the setting sleeve is connected with a screw thread of a stop ring of a rubber cylinder, the lower joint is connected with a screw thread on the outer side of the fishing sleeve, the outer side of the lower joint is sequentially connected with a rubber cylinder sleeve and a limiting ring through screw threads, and the releasing sleeve is connected with a central pipe screw thread and fixed through a releasing pin.
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 slip connection pipe is designed as a clutched connection.
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-slip connecting tube, 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.
The specific implementation mode is as follows: the invention will be further described with reference to the accompanying drawings in which: the device consists of an upper joint 1, a first fixed pin 2, a centralizing press ring 3, a second fixed pin 4, a centralizing 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 connecting 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 connecting tube 13, the slip connecting tube 13 is connected with the fixing sleeve 12 by screw thread, the outside of the slip connecting tube 13 is connected with the T-shaped screw thread between the upper cone 14, the lower end of the upper cone 14 is connected with the slips 15, the lower end of the lower cone 14, The slip hanging limiting sleeve 20 is connected with the slip hanging 17 through a second fixing pin 4, the outer side of the central pipe 7 is in contact connection with a fishing sleeve 22, a deblocking sleeve 24 is fixed on the fishing 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, a lower joint 29 is in threaded connection with the outer side of the fishing sleeve 22, the outer side of the lower joint 29 is sequentially in threaded connection with the rubber sleeve 27 and the limiting ring 28, and a releasing sleeve 30 is in threaded connection with the central pipe 7 and is 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-buckle design of the upper cone 14 and lower cone 18 anchors 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 connecting pipe 13 can effectively transmit torque and realize releasing at the same time.
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.
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, 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 connecting pipe 13 is opened, the slip 15 is respectively loosened upwards and downwards by the upper cone 14 and the lower cone 18 through the T-shaped buckle, the slip 15 is retracted, the water injection well is pushed to a designed position, and normal water injection or oil extraction well 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 connecting 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 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) 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 central tube (7) and the connecting tube (13), the slip connecting pipe (13) is in threaded connection with the fixed sleeve (12), the outer side of a slip central pipe (13) is in T-shaped threaded connection with the upper cone (14), the lower end of the upper cone (14) is sequentially connected with a slip (15), a spring II (16), a slip hanger (17) and a lower cone (18), a slip hanger limiting sleeve (20) is connected with the slip hanger (17) through a fixed pin II (4), the outer side of the central pipe (7) is in contact connection with a fishing sleeve (22), an unpacking sleeve (24) is fixed on the fishing sleeve (22) through an unpacking pin (23), a locking ring (25) is fixed with the unpacking sleeve (24) through an anti-rotating pin (19), one side of the setting sleeve (21) is connected with the lower cone (18) through a T-shaped thread, the other side of the setting sleeve (21) is in threaded connection with a locking ring (25), the bottom end of the setting sleeve (21) is in threaded connection with a rubber sleeve stop ring (26), and the lower joint (29) is in threaded connection with the outer side of the fishing sleeve (22), 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 (14) and the lower cone (18) 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 connection pipe (13) are designed as 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075356.0A CN110984901B (en) | 2019-11-06 | 2019-11-06 | Blowout prevention packer for quick pumping down and well completion after fracturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075356.0A CN110984901B (en) | 2019-11-06 | 2019-11-06 | Blowout prevention packer for quick pumping down and well completion after fracturing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110984901A CN110984901A (en) | 2020-04-10 |
| CN110984901B true CN110984901B (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911075356.0A Active CN110984901B (en) | 2019-11-06 | 2019-11-06 | Blowout prevention packer for quick pumping down and well completion after fracturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110984901B (en) |
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| US6547002B1 (en) * | 2000-04-17 | 2003-04-15 | Weatherford/Lamb, Inc. | High pressure rotating drilling head assembly with hydraulically removable packer |
| US7779903B2 (en) * | 2002-10-31 | 2010-08-24 | Weatherford/Lamb, Inc. | Solid rubber packer for a rotating control device |
| AU2003904183A0 (en) * | 2003-08-08 | 2003-08-21 | Woodside Energy Limited | Method for completion or work-over of a sub-sea well using a horizontal christmas tree |
| EP1815101B1 (en) * | 2004-11-19 | 2012-08-01 | Halliburton Energy Services, Inc. | Methods and apparatus for drilling, completing and configuring u-tube boreholes |
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| US8347983B2 (en) * | 2009-07-31 | 2013-01-08 | Weatherford/Lamb, Inc. | Drilling with a high pressure rotating control device |
| CN201486515U (en) * | 2009-09-25 | 2010-05-26 | 鄂晓娟 | Switch type releasing packer |
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2019
- 2019-11-06 CN CN201911075356.0A patent/CN110984901B/en active Active
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| Publication number | Publication date |
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| CN110984901A (en) | 2020-04-10 |
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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 Co Ltd Address before: 163453 Heilongjiang Province, Daqing City Ranghulu District No. 233 South Central Avenue Patentee before: Daqing Oilfield Co.,Ltd. |