CN201738869U - Drillable ball-pitching sliding sleeve for horizontal well - Google Patents
Drillable ball-pitching sliding sleeve for horizontal well Download PDFInfo
- Publication number
- CN201738869U CN201738869U CN2010202460613U CN201020246061U CN201738869U CN 201738869 U CN201738869 U CN 201738869U CN 2010202460613 U CN2010202460613 U CN 2010202460613U CN 201020246061 U CN201020246061 U CN 201020246061U CN 201738869 U CN201738869 U CN 201738869U
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- sliding sleeve
- ball
- horizontal well
- spring claw
- drillable
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Abstract
The utility model provides a drillable ball-pitching sliding sleeve for a horizontal well, belonging to the technical field of the manufacture of an underground tool in the oil and gas industry. By adopting the design mode of unlocking firstly and locking secondly, the utility model provides the drillable ball-pitching sliding sleeve for the horizontal well, which comprises a joint device and an elastic grasping pipe structure, wherein an upper joint and a lower joint of the joint device are in threaded connection with each other, and the elastic grasping pipe structure consists of an elastic grasping pipe. The drillable ball-pitching sliding sleeve overcomes the problems that the ball-pitching sliding sleeve can not be automatically locked after being unlocked, a ball seat can not be drilled, the peripheral fixation is unavailable, and the drilling and grinding can not be executed in the prior art. The drillable ball-pitching sliding sleeve is designed to have large outer diameter and have the relatively-smaller level error of the seat hole, and has the characteristic of being combined into a work pipe column which can complete 8 layer sections.
Description
Technical field
A kind of drillable ball injection sliding sleeve that is applicable to horizontal well is used for the segmentation rebuilding construction of horizontal well barefoot completion technology, belongs to the manufacturing technology field of industrial gas oil downhole tool.
Background technology
At present, it is to improve the advanced technology of well yield and the hypotonic oil gas field of efficient exploitation that horizontal well bores completion technique, because horizontal well reservoir segment length, non-homogeneity are strong, adopt general transformation specific aim not strong, weak effect, therefore be necessary to adopt the packer tubing string that the horizontal bare hole section is implemented mechanical packing, segmentation transformation, and drillable ball injection sliding sleeve is the important kit in the packer tubing string, it is placed between two packers, when volume increase transformation and completion, for the operation interval of interest provides reliable feed liquor and gas production passage; The pitching sliding sleeve major part of The field can only be used in straight well and inclined shaft at present, can not self-locking after the pitching sliding sleeve is opened, sometimes because the influence that steel ball can not enter sand setting in ball seat and the sliding sleeve smoothly at horizontal segment, sliding sleeve can't normally be opened, if the ball seat passage is less, and ball seat is not to bore material, and is circumferentially unfixing, therefore can not adopt the mode of boring mill to strengthen, these problems will influence the completion gas production in discharge opeing and later stage.
The utility model content
The purpose of this utility model is the deficiency at existing sliding sleeve technology, adopts the design that locks again after opening, and provides a kind of energy the satisfied drillable ball injection sliding sleeve that is applicable to horizontal well than major path.
The utility model is achieved in that the utility model comprises piecing devices and spring claw tube structure, it is characterized in that: described piecing devices are made of top connection 1 and lower contact 9, top connection 1 and lower contact 9 are by being threaded, and the interior circle in the top connection upper end is provided with locating slot, following locating slot 12 and side opening 13; The spring claw tube structure is made of spring claw tube 3, and spring claw tube 3 is arranged in upper and lower joint 1 and 9, is provided with in the upper end of spring claw tube 3 to play pawl 11, for the purpose that realizes sealing, all is provided with sealing ring 2 at the upper and lower end of described spring claw tube 3; By the ball seat 8 that has been threaded, between ball seat 8 cylindricals and spring claw tube 3, also be provided with sealing ring 7 in the lower end of spring claw tube 3;
Be provided with bullet pawl boss 10 in the upper end that plays pawl 11;
Being threaded in described top connection 1 and lower contact 9 a little is provided with hold-down screw 6, can realize upper and lower joint 1 and 9 fixing after being connected;
Described spring claw tube 3 is connected and fixed by opening shear pin 4 and anti-rotation pin 5 with top connection 1;
Leaving certain gaps uncovered by the economic plan between described bullet pawl 11;
According to designing requirement, when needs are transformed the pairing interval of pitching sliding sleeve, ball-throwing apparatus by well head is put into the unlatching ball of institute's adapted in the construction pipeline, by infusion the unlatching ball is arrived on the ball seat 8 that is arranged in the spring claw tube 3, with the shutoff of ball seat hole, after the shutoff, pressure in the tubing string raises, when reaching certain value, it is downward that ball seat 8 is forced to drive spring claw tube 3, and it is descending to cut off unlatching shear pin 4, the bullet pawl boss 10 that spring claw tube 3 upper ends are provided with is forced to shrink descending, enter down locating slot 12 from last locating slot, realize the reverse locking of spring claw tube 3, can not move upward, at this moment, breach between the bullet pawl 11 faces the side opening 13 of top connection 1, has realized of the present utility model opening, then just can be to the transformation of interval of interest; After all construction intervals finish, mouthful discharge opeing that drives a well, at this moment, the unlatching club on the ball seat 8 returns with liquid or gas and is discharged to catching in the ball device on the surface line; If the gas production of well is bigger, the ball seat hole can not meet the demands, and can bore and grind off ball seat 8, realizes the gas production in completion tubular column all-pass footpath.
The beneficial effects of the utility model and advantage are: because the design of sliding sleeve external diameter is relatively large, the differential design in sliding sleeve tee hole is less relatively, tool tubular column is transformed in the horizontal well bore hole segmentation of adopting the utility model to form can finish the nearly volume increase transformation operation of 8 intervals, pointed strong, effective, the characteristics of saving a large amount of operating expenses can improve the recovery ratio of well yield and oil gas field simultaneously significantly.
Description of drawings
Fig. 1 is a structural representation of the present utility model
The specific embodiment
Provide embodiment of the present utility model below in conjunction with accompanying drawing
Embodiment 1:
The utility model comprises piecing devices and spring claw tube structure, piecing devices are made of top connection 1 and lower contact 9, top connection 1 and lower contact 9 are by being threaded togather, be threaded in top connection 1 and lower contact 9 and a little be provided with hold-down screw 6, fixing after therefore can realizing upper and lower joint 1 and 9 are connected, the interior circle in the top connection upper end is provided with locating slot, following locating slot 12 and side opening 13; The spring claw tube structure is made of a spring claw tube 3, spring claw tube 3 is arranged in upper and lower joint 1 and 9, be provided with bullet pawl 11 in the upper end of spring claw tube 3, play leaving certain gaps uncovered by the economic plan between the pawl 11, spring claw tube 3 is connected and fixed by opening shear pin 4 and anti-rotation pin 5 with top connection 1, is connected and fixed the unlatching shear pin 4 of spring claw tube 3 and top connection 1 and anti-rotation pin 5 and can realizes axial and circumferential fixing between spring claw tube 3 and the top connection 1; For the purpose that realizes sealing, all be provided with sealing ring 2 at the upper and lower end of described spring claw tube 3; By the ball seat 8 that has been threaded, between ball seat 8 cylindricals and spring claw tube 3, also be provided with sealing ring 7 in the lower end of spring claw tube 3;
Embodiment 2:
Erection sequence of the present utility model is: earlier sealing ring 7 and 2 is enclosed within respectively on the cylindrical of ball seat 8 and spring claw tube 3, and ball seat 8 is connected the lower end of spring claw tube 3, then spring claw tube 3 is inserted from the upper end of top connection and put in place, install simultaneously and open shear pin 4 and anti-rotation pin 5, at last lower contact 9 is connected in the top connection 1, and tighten hold-down screw 6, and so just finished installation work of the present utility model, finished the preparation that comes into operation;
Embodiment 3:
During construction, according to the requirement of horizontal bare hole well segmentation volume increase reforming technology, suppress by pitching, make the spring claw tube 3 in the sliding sleeve descending, the bullet pawl boss 10 that spring claw tube 3 upper ends are provided with is forced to shrink descending, enter down locating slot 12 from the last locating slot of top connection, and make spring claw tube 3 reverse lockings, can not move up, at this moment, play the side opening 13 that the breach that leaves between the pawl 11 faces top connection, realized opening of ball-throwing type sliding sleeve, foundation is at the feed pathway of difference transformation interval, and input unlatching ball is positioned on the ball seat 8 of sliding sleeve; After each interval construction is finished, the open flow discharge opeing that drives a well, liquid returns row by 13 passages of the side opening in the sliding sleeve top connection 1, and the special-purpose ball of opening sliding sleeve also is discharged to catching the ball device on the surface line with liquid or gas from the oil pipe internal return; If think that the passage of ball seat 8 is less relatively, can not satisfy the needs of high yield well, can bore the grinder tool, bore the ball seat 8 that grinds off in the sliding sleeve by the coiled tubing band, discharge opeing, test, the aerogenesis passage of transforming interval are opened fully, and formed bigger completion gas production passage; The utility model can connect a plurality of in construction pipe string, simultaneously a plurality of intervals are handled, when needing bigger flow channel, can bore the grinder tool by the coiled tubing band, brill grinds off all interior ball seats 8 of whole sliding sleeves of series connection, discharge opeing, test, the aerogenesis passage of each interval are opened fully, just can be formed bigger completion gas production passage.
Claims (6)
1. a drillable ball injection sliding sleeve that is applicable to horizontal well comprises piecing devices and spring claw tube structure, and it is characterized in that: the top connection of described piecing devices and lower contact are by being threaded, and top connection is provided with side opening; The spring claw tube of spring claw tube structure is arranged in the upper and lower joint, is provided with the bullet pawl in the upper end of spring claw tube, in the lower end of spring claw tube by the ball seat that has been threaded.
2. the drillable ball injection sliding sleeve that is applicable to horizontal well according to claim 1 is characterized in that: the interior circle in described top connection upper end is provided with locating slot and following locating slot.
3. the drillable ball injection sliding sleeve that is applicable to horizontal well according to claim 1 is characterized in that: be provided with in the upper end of described bullet pawl and play the pawl boss.
4. the drillable ball injection sliding sleeve that is applicable to horizontal well according to claim 1 is characterized in that: being threaded in described top connection and lower contact a little is provided with hold-down screw.
5. the drillable ball injection sliding sleeve that is applicable to horizontal well according to claim 1 is characterized in that: described spring claw tube and top connection are connected and fixed by opening shear pin and anti-rotation pin.
6. the drillable ball injection sliding sleeve that is applicable to horizontal well according to claim 1 is characterized in that: the upper and lower end at described spring claw tube all is provided with sealing ring; Between described ball seat cylindrical and spring claw tube, also be provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202460613U CN201738869U (en) | 2010-07-02 | 2010-07-02 | Drillable ball-pitching sliding sleeve for horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202460613U CN201738869U (en) | 2010-07-02 | 2010-07-02 | Drillable ball-pitching sliding sleeve for horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201738869U true CN201738869U (en) | 2011-02-09 |
Family
ID=43554147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202460613U Expired - Lifetime CN201738869U (en) | 2010-07-02 | 2010-07-02 | Drillable ball-pitching sliding sleeve for horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201738869U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850670A (en) * | 2012-12-06 | 2014-06-11 | 中国石油化工股份有限公司 | Reducing drillable pressing crack slide sleeve |
| CN103967468A (en) * | 2014-05-23 | 2014-08-06 | 湖南唯科拓石油科技服务有限公司 | Counting device and multi-stage full-drift-diameter injection ball sliding sleeve device |
| CN108240197A (en) * | 2017-12-27 | 2018-07-03 | 中国石油集团长城钻探工程有限公司 | The pitching sliding sleeve of ball seat can be salvaged |
| CN113530512A (en) * | 2020-04-22 | 2021-10-22 | 中国石油天然气股份有限公司 | Fracturing string and fracturing method |
-
2010
- 2010-07-02 CN CN2010202460613U patent/CN201738869U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850670A (en) * | 2012-12-06 | 2014-06-11 | 中国石油化工股份有限公司 | Reducing drillable pressing crack slide sleeve |
| CN103967468A (en) * | 2014-05-23 | 2014-08-06 | 湖南唯科拓石油科技服务有限公司 | Counting device and multi-stage full-drift-diameter injection ball sliding sleeve device |
| CN103967468B (en) * | 2014-05-23 | 2017-01-18 | 湖南唯科拓石油科技服务有限公司 | Counting device and multi-stage full-drift-diameter injection ball sliding sleeve device |
| CN108240197A (en) * | 2017-12-27 | 2018-07-03 | 中国石油集团长城钻探工程有限公司 | The pitching sliding sleeve of ball seat can be salvaged |
| CN113530512A (en) * | 2020-04-22 | 2021-10-22 | 中国石油天然气股份有限公司 | Fracturing string and fracturing 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: 20110209 |