CN202325386U - Stepped setting fracture packer - Google Patents
Stepped setting fracture packer Download PDFInfo
- Publication number
- CN202325386U CN202325386U CN2011204894113U CN201120489411U CN202325386U CN 202325386 U CN202325386 U CN 202325386U CN 2011204894113 U CN2011204894113 U CN 2011204894113U CN 201120489411 U CN201120489411 U CN 201120489411U CN 202325386 U CN202325386 U CN 202325386U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- sleeve
- central tube
- adapter sleeve
- connecting sleeve
- 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.)
- Expired - Lifetime
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Abstract
The utility model belongs to downhole tools for oil and gas fields and particularly relates to a stepped setting fracture packer, which comprises an upper joint (1), an upper compression ring (2), a central tube (3), an expansion rubber barrel (4), a lower compression ring (5) and a steel ball (9), wherein the lower end of the central tube (3) is in threaded connection with a connecting sleeve (6) with a hole; a sliding sleeve (8) is arranged in the connecting sleeve (6) in a penetrating manner; two groups of rubber rings between the sliding sleeve (8) and the connecting sleeve (6) are used for sealing the hole in the connecting sleeve (6); the upper end of the sliding sleeve (8) is fixed with the central tube (3) through a setting shear pin (7); a ball seat (9) is arranged in the sliding sleeve (8) in a penetrating manner; a fixture block (12) is arranged in a groove of the sliding sleeve (8); the lower end of the ball seat (9) is clamped on an inner hole circular bead of the sliding sleeve (8); a snap spring (10) is arranged in an outer groove of the sliding sleeve (8); the connecting sleeve (6) is used for compressing the snap spring (10) and the fixture block (12); and the lower end of the connecting sleeve (6) is in threaded connection with a lower joint (13). The stepped setting fracture packer can meet the requirement of well fracturing, and can realize stepped setting.
Description
Technical field
The utility model belongs to the oil gas field downhole tool, particularly a kind of pressure break packer that sets step by step.
Background technology
At present, domestic and international employed pressure break packer, all packers set simultaneously full when all being pressure break, and the packer below during separate stratum fracfturing had lost efficacy, and can not judge in ground, causes and press the string layer, do not reach the purpose of separate stratum fracfturing.Press when blocking up, upper packer sets, and anti-flushing well is washed obstructed, and sand card tubing string during lift pipe string is proposed the motionless pressure break failure that causes.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned technical deficiency, and a kind of well fracturing requirement of satisfying is provided, and that can corresponding fractured interval avoids pressing the string accident sets the pressure break packer step by step.
The technical scheme that the utility model technical solution problem adopts is: set the pressure break packer step by step and comprise top connection, upper press ring, central tube, expansion packing element, following pressure ring, steel ball, be characterized in the adapter sleeve in screw thread connecting band hole, central tube lower end, install sliding sleeve in the adapter sleeve; With two groups of cushion rubbers the hole on the adapter sleeve is sealed between sliding sleeve and the adapter sleeve; The sliding sleeve upper end is fixed with setting shear pin with central tube, installs ball seat in the sliding sleeve, and fixture block is contained in the sliding sleeve groove; The ball seat lower end is installed on the sliding sleeve endoporus shoulder; Jump ring is contained in the sliding sleeve water jacket, and adapter sleeve is pushed down jump ring and fixture block, the lower contact that is threaded of adapter sleeve lower end.
The beneficial effect of the utility model is: set the pressure break packer step by step and can satisfy the well fracturing requirement; Realize setting step by step, just have only corresponding fractured interval packer setting, other packers do not set; So just avoided time envelope inefficacy ground to judge unclear; Cause the string accident of pressing, can wash logically when pressing stifled anti-flushing well, stopped the pressure break failure that sand card tubing string is caused.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 sets pressure break packer construction sectional view step by step.
Among the figure, the 1-top connection; The 2-upper press ring; The 3-central tube; 4-expands packing element; The 4-1-tube head; Pressure ring under the 5-; The 6-adapter sleeve; 7-sets shear pin; The 8-sliding sleeve; The 9-steel ball; The 10-jump ring; The 11-ball seat; The 12-fixture block; The 13-lower contact.
The specific embodiment
Embodiment; With reference to accompanying drawing 1; Central tube 3 upper ends that the set the pressure break packer step by step top connection 1 usefulness sealing ring sealing that is threaded, the top connection 1 lower end upper press ring 2 usefulness sealing rings sealing that is threaded, tube head 4-1 sulfides with expansion packing element 4 two ends respectively; Expansion packing element 4 is sleeved on the central tube 3 with the tube head 4-1 that sulfides, and the upper and lower end of expansion packing element 4 is installed on respectively in the upper and lower end of upper and lower pressure ring 2,5.The adapter sleeve 6 in screw thread connecting band hole, central tube 3 lower end, adapter sleeve 6 inside install sliding sleeve 8, with two groups of cushion rubbers the hole on the adapter sleeve 6 are sealed between sliding sleeve 8 and the adapter sleeve 6; It is fixing that sliding sleeve 8 upper ends and central tube 3 usefulness set shear pin 7; Install ball seat 11 in the sliding sleeve 8, fixture block 12 is contained in sliding sleeve 8 grooves, and ball seat 11 usefulness fixture blocks 12 shoulders are installed in the sliding sleeve 8; Steel ball 9 places on the ball seat 11; Jump ring 10 is contained in sliding sleeve 8 water jackets, and adapter sleeve 6 is pushed down jump ring 10 and fixture block 12, the lower contact 13 that is threaded of adapter sleeve 6 lower ends.
The operating principle that sets the pressure break packer step by step is: throw steel ball 9 in the central tube 3 and be seated on the ball seat 11, water filling is suppressed to cut off and is set shear pin 7, and sliding sleeve 8 connects descending with ball seat 11 through fixture block 12; Open the inlet opening at adapter sleeve 6 places,, rise outside the fixture block 12 when sliding sleeve 8 goes downwards to lower contact 13 endoporus shoulder places; The packer feed pathway is opened; During pressure release, press and outer equilibrium in the central tube 3 in the packer setting when interior pressure is higher than external pressure 2Mpa, central tube 3; Expansion packing element 4 reclaims the packer deblocking.
Claims (1)
1. one kind sets the pressure break packer step by step; Comprise top connection (1), upper press ring (2), central tube (3), expansion packing element (4), following pressure ring (5), steel ball (9), it is characterized in that the adapter sleeve (6) in screw thread connecting band hole, central tube (3) lower end, install sliding sleeve (8) in the adapter sleeve (6); With two groups of cushion rubbers the hole on the adapter sleeve (6) is sealed between sliding sleeve (8) and the adapter sleeve (6); Sliding sleeve (8) upper end is fixed with setting shear pin (7) with central tube (3), installs ball seat (11) in the sliding sleeve (8), and fixture block (12) is contained in sliding sleeve (8) groove; Ball seat (11) lower end is installed on sliding sleeve (8) the endoporus shoulder; Jump ring (10) is contained in sliding sleeve (8) water jacket, and adapter sleeve (6) is pushed down jump ring (10) and fixture block (12), the lower contact (13) that is threaded of adapter sleeve (6) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204894113U CN202325386U (en) | 2011-12-01 | 2011-12-01 | Stepped setting fracture packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204894113U CN202325386U (en) | 2011-12-01 | 2011-12-01 | Stepped setting fracture packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325386U true CN202325386U (en) | 2012-07-11 |
Family
ID=46437368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204894113U Expired - Lifetime CN202325386U (en) | 2011-12-01 | 2011-12-01 | Stepped setting fracture packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325386U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306658A (en) * | 2013-07-01 | 2013-09-18 | 中国石油化工股份有限公司 | Stage-by-stage setting multi-stage segmental fracturing string and use method thereof |
| CN104500015A (en) * | 2014-10-21 | 2015-04-08 | 中国石油集团川庆钻探工程有限公司 | Oil-gas well used controllable set packer for multistage acid fracturing |
| CN107780875A (en) * | 2016-08-29 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of blanking plug |
| CN107916918A (en) * | 2017-11-16 | 2018-04-17 | 中国石油集团川庆钻探工程有限公司 | Reservoir separate zone stimulation tool tubular column and fracture acidizing method |
-
2011
- 2011-12-01 CN CN2011204894113U patent/CN202325386U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306658A (en) * | 2013-07-01 | 2013-09-18 | 中国石油化工股份有限公司 | Stage-by-stage setting multi-stage segmental fracturing string and use method thereof |
| CN103306658B (en) * | 2013-07-01 | 2016-01-20 | 中国石油化工股份有限公司 | Stepped setting multistage subsection fracturing string and using method thereof |
| CN104500015A (en) * | 2014-10-21 | 2015-04-08 | 中国石油集团川庆钻探工程有限公司 | Oil-gas well used controllable set packer for multistage acid fracturing |
| CN104500015B (en) * | 2014-10-21 | 2017-04-05 | 中国石油集团川庆钻探工程有限公司 | Oil/gas Well is acidified controllable set packer with staged fracturing |
| CN107780875A (en) * | 2016-08-29 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of blanking plug |
| CN107780875B (en) * | 2016-08-29 | 2023-09-26 | 中国石油天然气股份有限公司 | Plug device |
| CN107916918A (en) * | 2017-11-16 | 2018-04-17 | 中国石油集团川庆钻探工程有限公司 | Reservoir separate zone stimulation tool tubular column and fracture acidizing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |