CN203403872U - Multistage fracturing well completion sliding sleeve device - Google Patents
Multistage fracturing well completion sliding sleeve device Download PDFInfo
- Publication number
- CN203403872U CN203403872U CN201320434780.1U CN201320434780U CN203403872U CN 203403872 U CN203403872 U CN 203403872U CN 201320434780 U CN201320434780 U CN 201320434780U CN 203403872 U CN203403872 U CN 203403872U
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- sleeve
- fracturing
- wall
- multistage fracturing
- ball seat
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Abstract
The utility model relates to an oil and gas exploitation underground staged fracturing device, in particular to a multistage fracturing well completion sidling sleeve device. The lower end of a sleeve body of the device is connected with a lower limit connector through threads, a variable-diameter ball base is connected with the inner wall of the sleeve body in an interference fit mode, a switch sleeve is arranged at the lower end of the variable-diameter ball base and is fixedly connected to the inner wall of the sleeve body through a shear pin, the switch sleeve seals a plurality of side holes in the circumferential direction of the sleeve body, the variable-diameter ball base is designed to be of a C-shaped annular sleeve structure with a notch, and the inner wall of the lower portion of the sleeve body is provided with an annular groove. According to the multistage fracturing well completion sidling sleeve device, a fracturing sliding sleeve can be opened when ball sealers with the same diameters are put in, the limit caused when the ball sealers are increased step by step does not exist, and the demands of oil and gas well multistage fracturing are met. The defect that ball sealers with different diameters need to be sequentially put in to open corresponding sliding sleeves when an existing sliding sleeve tool is fractured is overcome.
Description
Technical field:
The utility model relates to a kind of oil-gas mining down-hole segmented fracturing device, particularly a kind of multistage fracturing completion well sliding device.
Background technology:
Down-hole segmented fracturing device is to coordinate sliding sleeve to carry out pressure break by packer at present, throws a ball and opens a sliding sleeve, drops into successively the ball of different-diameter and opens corresponding sliding sleeve, and the diameter that drops into ball sealer increases successively.Complete multistage fracturing reform.A set of fracturing string is comprised of a plurality of sliding sleeves often, and ball sealer is subject to the restriction of fracturing string internal diameter, and the sliding sleeve limited amount of opening, is seriously restricting the application of fracturing sliding bush.Therefore, traditional sliding sleeve instrument can not meet the technical requirements of reservoir staged fracturing transformation.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of multistage fracturing completion well sliding device, this device has been realized the ball sealer unlatching fracturing sliding bush that can at every turn drop into same diameter, the restriction that increased step by step by ball sealer, meets the demand of Oil/gas Well multistage pressure break.Overcome the ball that need to drop into successively different-diameter when existing sliding sleeve instrument carries out pressure break and opened the deficiency of corresponding sliding sleeve.
Technical solution adopted in the utility model is: a kind of multistage fracturing completion well sliding device, comprises body and lower limit joint; Body lower end is connected with lower limit joint screw thread, reducing ball seat is connected by interference fit with body inwall, switch sleeve is arranged on reducing ball seat lower end and is fixedly connected on body inwall by shear pin, switch sleeve seals up a plurality of side openings that make progress in body week, reducing ball seat is designed to C shape ring set structure jaggy, is designed with a cannelure in body lower inner wall.
Reducing ball seat upper inside wall and outer wall respectively have 45 degree taper seats.
The beneficial effects of the utility model are: the utility model is owing to having adopted the reducing ball seat of C shape ring set structure, thereby have and can drop into the function that the ball sealer of same diameter is opened fracturing sliding bush at every turn, the restriction that increased step by step by ball sealer, meets the demand of Oil/gas Well multistage pressure break.
Accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of reducing ball seat.
The specific embodiment:
As shown in Figure 1, a kind of multistage fracturing completion well sliding device, comprises body 1 and lower limit joint 4; Body 1 lower end is threaded with lower limit joint 4, reducing ball seat 2 is connected by interference fit with body 1 inwall, switch sleeve 3 is arranged on reducing ball seat 2 lower ends and is fixedly connected on body 1 inwall by shear pin 5, switch sleeve 3 seals up a plurality of side openings 6 that body makes progress for 1 week, reducing ball seat 2 is designed to C shape ring set structure jaggy, is designed with a cannelure 7 in body 1 lower inner wall.Reducing ball seat 2 upper inside wall and outer wall respectively have 45 degree taper seats, and bottom is cylindric.The minimum diameter of reducing ball seat 2 matches with the external diameter of the ball sealer of throwing.Reducing ball seat 2 is provided with seal groove with junction, the switch sleeve 3 of body 1 with the junction of body 1, is mounted with seal in seal groove, and seal is high elastic rubber.
The utility model is when underground construction, and sleeve pipe connects a plurality of packers and the utility model sliding sleeve, last group sliding sleeve adopt conventional sliding sleeve, by tubing string down to Oil/gas Well equivalent layer position.Pitching, when pump pressure raises suddenly, illustrates the internal conical surface place that ball sealer is pumped to reducing ball seat 2.Increase and to be pumped to certain numerical value, reducing ball seat 2, under the promotion of ball sealer axial force, is cut off the shear pin 5 being connected between switch sleeve 3 and body 1, and reducing ball seat 2 and the downward slippage of switch sleeve 3, open a plurality of side openings 6 gradually.When switch sleeve 3 touches lower limit joint 4 end position, stop downward slippage, now reducing ball seat 2 slides into cannelure 7 positions of body 1, and reducing ball seat 2 opens rapidly, and internal diameter increases rapidly, is stuck in the position of cannelure 7.Ball sealer, under the effect of thrust, departs from reducing ball seat 2, through lower limit joint 4, passes through smoothly sliding sleeve.When ball sealer is pumped into the reducing ball seat place of next sliding sleeve, repeat said process, realize the object that a kind of ball sealer of size is opened multistage fracturing sliding sleeve.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; As long as meet, use needs, all within protection domain of the present utility model.
Claims (2)
1. a multistage fracturing completion well sliding device, comprises body (1) and lower limit joint (4); It is characterized in that: body (1) lower end is threaded with lower limit joint (4), reducing ball seat (2) is connected by interference fit with body (1) inwall, switch sleeve (3) is arranged on reducing ball seat (2) lower end and is fixedly connected on body (1) inwall by shear pin (5), switch sleeve (3) seals up a plurality of side openings (6) that make progress in body (1) week, reducing ball seat (2) is designed to C shape ring set structure jaggy, in body (1) lower inner wall, is designed with a cannelure (7).
2. according to multistage fracturing completion well sliding device claimed in claim 1, it is characterized in that: described reducing ball seat (2) upper inside wall and outer wall respectively have 45 degree taper seats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320434780.1U CN203403872U (en) | 2013-07-19 | 2013-07-19 | Multistage fracturing well completion sliding sleeve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320434780.1U CN203403872U (en) | 2013-07-19 | 2013-07-19 | Multistage fracturing well completion sliding sleeve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203403872U true CN203403872U (en) | 2014-01-22 |
Family
ID=49939811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320434780.1U Expired - Fee Related CN203403872U (en) | 2013-07-19 | 2013-07-19 | Multistage fracturing well completion sliding sleeve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203403872U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234683A (en) * | 2014-09-12 | 2014-12-24 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Reducing mechanism |
| CN104389573A (en) * | 2014-09-23 | 2015-03-04 | 中国石油天然气股份有限公司 | Inside-bushing staged fracturing fall ball seat type sliding sleeve |
| CN104975835A (en) * | 2015-06-11 | 2015-10-14 | 中国石油天然气股份有限公司 | Elastic fracturing ball seat |
| CN105257246A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Cluster type slide sleeve |
| CN113653463A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Sliding sleeve assembly and construction tubular column |
| CN113653464A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Acidizing tubular column for horizontal well and acidizing method |
| CN116084904A (en) * | 2023-01-09 | 2023-05-09 | 新疆敦华绿碳技术股份有限公司 | CO capable of multiple linkage protection 2 Auxiliary pressurizing device and method for fracturing |
-
2013
- 2013-07-19 CN CN201320434780.1U patent/CN203403872U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234683A (en) * | 2014-09-12 | 2014-12-24 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Reducing mechanism |
| CN104389573A (en) * | 2014-09-23 | 2015-03-04 | 中国石油天然气股份有限公司 | Inside-bushing staged fracturing fall ball seat type sliding sleeve |
| CN104975835A (en) * | 2015-06-11 | 2015-10-14 | 中国石油天然气股份有限公司 | Elastic fracturing ball seat |
| CN104975835B (en) * | 2015-06-11 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of elastic pressure break ball seat |
| CN105257246A (en) * | 2015-10-26 | 2016-01-20 | 中国石油集团西部钻探工程有限公司 | Cluster type slide sleeve |
| CN105257246B (en) * | 2015-10-26 | 2018-03-27 | 中国石油集团西部钻探工程有限公司 | Cluster formula sliding sleeve |
| CN113653463A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Sliding sleeve assembly and construction tubular column |
| CN113653464A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Acidizing tubular column for horizontal well and acidizing method |
| CN113653463B (en) * | 2020-05-12 | 2023-09-29 | 中国石油化工股份有限公司 | Sliding sleeve assembly and construction tubular column |
| CN113653464B (en) * | 2020-05-12 | 2023-10-31 | 中国石油化工股份有限公司 | Acidizing string for horizontal well and acidizing method |
| CN116084904A (en) * | 2023-01-09 | 2023-05-09 | 新疆敦华绿碳技术股份有限公司 | CO capable of multiple linkage protection 2 Auxiliary pressurizing device and method for fracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |