CN202832375U - Breakable ball injection fracturing slide sleeve - Google Patents
Breakable ball injection fracturing slide sleeve Download PDFInfo
- Publication number
- CN202832375U CN202832375U CN 201220386625 CN201220386625U CN202832375U CN 202832375 U CN202832375 U CN 202832375U CN 201220386625 CN201220386625 CN 201220386625 CN 201220386625 U CN201220386625 U CN 201220386625U CN 202832375 U CN202832375 U CN 202832375U
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- Prior art keywords
- elastic claw
- sandblast
- joint
- ball seat
- takes
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Abstract
The utility model discloses a breakable ball injection fracturing slide sleeve, which comprises an upper connector, an elastic claw and an abrasive blasting connector, wherein the upper end of the elastic claw is connected with the upper connector, and the lower end passes through the abrasive blasting connector and is fixedly connected through releasing shear pins; a ball seat and a support sleeve connected with the lower end of the ball seat are arranged in the elastic claw; the ball seat is fixed on the elastic claw through breakable control shear pins; a conical surface is formed at the upper end of the inner hole of the ball seat; a boss is formed at the lower part of the elastic claw; a groove matched with the boss of the elastic claw is formed on the inner side of the abrasive blasting connector; a support sleeve boss which can stretch over the lower part of the elastic claw is arranged at the lower end of the support sleeve; a liquid outlet is formed in the abrasive blasting connector; a slide sleeve core is arranged in the abrasive blasting connector; and a slide sleeve core is locked on the abrasive blasting connector through starting shear pins, and can seal the liquid outlet. The breakage of the slide sleeve can be achieved through injecting balls to build pressure on the ball seat, and tubular columns can be got out stage by stage, so that the load for lifting up the tubular columns is reduced, and the success rate of getting out the tubular columns is improved.
Description
Technical field
The utility model belongs to oil, natural gas extraction technical field, relates to matched special purpose tools in the oil-gas Layer fracturing string, and particularly a kind of breaking takes off the pitching fracturing sliding bush.
Background technology
At the fracturing sliding bush that Oil/gas Well is carried out use in layering, the staged fracturing rebuilding construction, it is the important tool that realizes the oil jacket passage.Existing fracturing sliding bush (patent No.: 200820123843.0, a kind of fracture used high-pressure sand blast sliding sleeve) have the characteristics such as simple in structure, quick detachable and assembling, become one of important downhole tool in separate layer acid treatment, the fracturing work.But when being used for the multistage fracturing construction, because packer is buried etc. by sand card, sand often, carry load on the tubing string large; Horizontal well multistage fracturing particularly, tubing string even can't trip out has seriously restricted the Efficient Development of horizontal well.
The utility model content
The utility model proposes a kind of tubing string that improves for the technical problem that exists in the above-mentioned prior art and takes out breaking of success rate and take off the pitching fracturing sliding bush.
The utility model for the technical scheme that the problem that solves prior art adopts is: comprise top connection, elastic claw, the sandblast joint, the elastic claw upper end is connected with top connection, the lower end is installed in the sandblast joint and is fixedly connected with by discharging shear pin, in elastic claw, be provided with ball seat and the support set that is connected with the ball seat lower end, ball seat is fixed on the elastic claw by the disconnected control shear pin that takes off, ball seat endoporus upper end is set to taper seat, elastic claw the bottom boss is arranged, be provided with the groove with the boss phase configuration of elastic claw in the inboard of sandblast joint, be provided with the support set boss that can strut the elastic claw bottom in the lower end of support set, described sandblast joint is provided with fluid hole, be provided with the sliding sleeve fuse in the sandblast joint, the sliding sleeve fuse is locked on the sandblast joint by the startup shear pin and can seals fluid hole.
By technique scheme, on support set top the support set groove is arranged, in the support set groove, be installed on snap, described snap is provided with downward zigzag external screw thread, in elastic claw, be positioned at snap below the corresponding zigzag internal thread upwards that is provided with, this zigzag internal thread can be meshed with the snap external screw thread.
By technique scheme, be connected with the sand block cover at the sandblast joint, this sand block cover is positioned at the exit of fluid hole.
By technique scheme, described sliding sleeve fuse is provided with endoporus, is set to taper seat in the upper end of sliding sleeve fuse endoporus.
By technique scheme, described fluid hole be shaped as rectangle.
By technique scheme, described fluid hole is the inclination fluid hole.
By technique scheme, the inclination of described fluid hole is 30 °-60 °.
The utility model technique effect obtained with respect to prior art is:
1, build the pressure at ball seat by pitching and realize that sliding sleeve is disconnected and take off, fishing string alleviates and carries load on the tubing string step by step, has improved tubing string and has taken out success rate, reduces the measure risk.
2, high strength sand block cover is installed in the passway, is reduced the sandblast jet to the erosion of sleeve pipe.
Description of drawings
Fig. 1 be an embodiment of the utility model block the half section structure chart.
Wherein: 1, top connection, 2, elastic claw, 3, ball seat, 4, the disconnected control shear pin that takes off, 5, snap, 6, discharge shear pin, 7, support set, 8, the sandblast joint, 9, start shear pin, 10, the sand block cover, 11, " O " RunddichtringO, 12, the sliding sleeve fuse.
The specific embodiment
Further specify the specific embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of breaking takes off the pitching fracturing sliding bush, it comprises top connection 1, elastic claw 2, ball seat 3, support set 7, sandblast joint 8 and sliding sleeve fuse 12, elastic claw 2 upper ends are connected with top connection 1, elastic claw 2 lower ends are inserted in the sandblast joint 8 and are fixedly connected with by discharging shear pin 6, the support set 7 that ball seat 3 is arranged in elastic claw 2 and be threaded with ball seat 3 lower ends, ball seat 3 is fixed on the elastic claw 2 by the disconnected control shear pin 4 that takes off, in the ball seat 3 centre bore is arranged, the top of ball seat 3 endoporus is taper seat, elastic claw 2 the bottom be provided with boss, inboard fluted at sandblast joint 8, the support set boss that can strut the elastic claw bottom is arranged in the lower end of support set 7, the support set boss makes the groove of sandblast joint 8 can block the boss of elastic claw 2, at sandblast joint 8 fluid hole is arranged, fluid hole be shaped as rectangle, the angle of inclination of fluid hole is 45 °, sliding sleeve fuse 12 is arranged in sandblast joint 8, sliding sleeve fuse 12 links together with sandblast joint 8 by startup shear pin 9 and can seal fluid hole, sliding sleeve fuse 12 is provided with endoporus, is set to taper seat in the upper end of sliding sleeve endoporus; Sliding sleeve fuse 12 upper and lower ends are by " O " RunddichtringO 11 and 8 sealings of sandblast joint, and wherein, the internal diameter of sliding sleeve fuse 12 is less than the internal diameter of ball seat 3.Be connected with sand block cover 10 on the sandblast joint 8, this sand block cover is positioned at the exit of fluid hole.
On the top of support set 8 the support set groove is arranged, in the support set groove, be installed on snap 5, described snap is provided with downward zigzag external screw thread, elastic claw be positioned at snap below be provided with upwards zigzag internal thread, this zigzag internal thread can be meshed with snap.
The course of work of the present utility model is: after the utility model is installed in desired location, from the stifled ball of oil pipe pitching, drops on the internal conical surface of sliding sleeve fuse 12 until stifled ball and realize slowly building the pressure from oil pipe after the sealing.Start pin 9 and cut off after pressure arrives design load, sliding sleeve fuse 12 moves along sandblast joint 8 inwalls, and the sandblast fluid hole is opened.Sand liquid enters the stratum through the sandblast fluid hole.Sand block cover 10 alleviates sand liquid to its direct erosion for the protection of sleeve pipe.
After fracturing methods is finished, if it is larger to trip out tubing string load, even can not directly trip out the time, drop into the slightly large stifled ball of diameter from oil pipe, the internal conical surface that arrives ball seat 3 when stifled ball is realized slowly building the pressure from oil pipe after the sealing.The disconnected control pin 4 that takes off is cut off after pressure arrives design load, and ball seat 3 promotes support set 7 and moves.Simultaneously, the snap 5 that is set on the support set 7 is mobile with support set 7, thus with the sawtooth internal thread engagement of elastic claw 2.When the boss of support set 7 moved to the below of elastic claw boss, because the effect of elastic force, the boss of elastic claw 2 lost support.At this moment, after the upper lifting pipe post was cut off and discharged shear pin 6, sandblast joint 8 broke away from elastic claw 2, and the realization sliding sleeve is disconnected to be taken off.
The utility model can be used in the multistage fracturing string, builds the pressure at ball seat by pitching and realizes that sliding sleeve is disconnected and take off, and fishing string alleviates and carries load on the tubing string step by step, has improved tubing string and has taken out success rate, reduces the measure risk.
Claims (7)
1. one kind can break and takes off the pitching fracturing sliding bush, it is characterized in that comprising top connection, elastic claw, the sandblast joint, the elastic claw upper end is connected with top connection, the lower end is installed in the sandblast joint and is fixedly connected with by discharging shear pin, in elastic claw, be provided with ball seat and the support set that is connected with the ball seat lower end, ball seat is fixed on the elastic claw by the disconnected control shear pin that takes off, ball seat endoporus upper end is set to taper seat, elastic claw the bottom boss is arranged, be provided with the groove with the boss phase configuration of elastic claw in the inboard of sandblast joint, be provided with the support set boss that can strut the elastic claw bottom in the lower end of support set, described sandblast joint is provided with fluid hole, be provided with the sliding sleeve fuse in the sandblast joint, the sliding sleeve fuse is locked on the sandblast joint by the startup shear pin and can seals fluid hole.
2. a kind of breaking according to claim 1 takes off the pitching fracturing sliding bush, it is characterized in that on support set top the support set groove being arranged, in the support set groove, be installed on snap, described snap is provided with downward zigzag external screw thread, in elastic claw, be positioned at snap below the corresponding zigzag internal thread upwards that is provided with, this zigzag internal thread can be meshed with the snap external screw thread.
3. a kind of breaking according to claim 1 and 2 takes off the pitching fracturing sliding bush, it is characterized in that being connected with the sand block cover at the sandblast joint, and this sand block cover is positioned at the exit of fluid hole.
4. a kind of breaking according to claim 1 and 2 takes off the pitching fracturing sliding bush, it is characterized in that described sliding sleeve fuse is provided with endoporus, is set to taper seat in the upper end of sliding sleeve fuse endoporus.
5. a kind of breaking according to claim 1 and 2 takes off the pitching fracturing sliding bush, it is characterized in that the rectangle that is shaped as of described fluid hole.
6. a kind of breaking according to claim 5 takes off the pitching fracturing sliding bush, it is characterized in that described fluid hole is the inclination fluid hole.
7. a kind of breaking according to claim 6 takes off the pitching fracturing sliding bush, and the inclination that it is characterized in that described fluid hole is 30 °-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220386625 CN202832375U (en) | 2012-08-07 | 2012-08-07 | Breakable ball injection fracturing slide sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220386625 CN202832375U (en) | 2012-08-07 | 2012-08-07 | Breakable ball injection fracturing slide sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832375U true CN202832375U (en) | 2013-03-27 |
Family
ID=47944107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220386625 Expired - Fee Related CN202832375U (en) | 2012-08-07 | 2012-08-07 | Breakable ball injection fracturing slide sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832375U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905447A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Underground switch device |
| CN114622883A (en) * | 2020-12-09 | 2022-06-14 | 中国石油天然气股份有限公司 | Sand blasting sliding sleeve and multistage immovable fracturing string |
| CN115704294A (en) * | 2021-08-17 | 2023-02-17 | 中国石油天然气集团有限公司 | Water injection fracturing integrated detachable packer |
-
2012
- 2012-08-07 CN CN 201220386625 patent/CN202832375U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905447A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Underground switch device |
| CN114622883A (en) * | 2020-12-09 | 2022-06-14 | 中国石油天然气股份有限公司 | Sand blasting sliding sleeve and multistage immovable fracturing string |
| CN115704294A (en) * | 2021-08-17 | 2023-02-17 | 中国石油天然气集团有限公司 | Water injection fracturing integrated detachable packer |
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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: 20130327 Termination date: 20190807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |