CN203463073U - Sleeve pipe slide sleeve capable of being repeatedly opened and closed - Google Patents
Sleeve pipe slide sleeve capable of being repeatedly opened and closed Download PDFInfo
- Publication number
- CN203463073U CN203463073U CN201320500496.XU CN201320500496U CN203463073U CN 203463073 U CN203463073 U CN 203463073U CN 201320500496 U CN201320500496 U CN 201320500496U CN 203463073 U CN203463073 U CN 203463073U
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- sand blasting
- sandblast
- sleeve pipe
- inner core
- hole
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Abstract
The utility model relates to the technical field of layered transformation of oil and gas field storage layers, in particular to a sleeve pipe slide sleeve capable of being repeatedly opened and closed. An upper joint, a positioning joint, an outer tube sand blasting body and a lower joint of the device are sequentially connected from top to bottom, a sand blasting hole is formed in a correcting block of the outer tube sand blasting body, materials are pre-filled in the sand blasting hole, an inner tube is arranged at the inner side of the outer tube sand blasting body, the inner tube blocks the sand blasting hole of the outer tube sand blasting body and realizes the sealing through a V-shaped combined seal, the upper end of the inner tube is provided with a pawl spring, a locking elastic sheet is arranged on the pawl spring, the locking elastic sheet is matched with a positioning groove formed in the inner wall of the lower end of the positioning joint, a groove is formed in the inner wall of the upper end of the positioning joint, and an inner tube sand blasting hole is formed in the lower end of the inner tube. The sleeve pipe slide sleeve realizes the effects that the inner through diameter of the sleeve pipe maintains uniform, a matched opening and closing tool is utilized for realizing the layered press cracking, the perforation and drilling plugging operation is not needed, the press cracking operation is completed in one step, the layered stage limitation is avoided, and the press cracking starting pressure is low.
Description
Technical field:
The utility model relates to a kind of oil gas field reservoir separate zone stimulation technical field, particularly a kind of can repeat switch sliding sleeve of bushing.
Background technology:
The at present separate zone stimulation of oil gas field mainly relies on and on sliding sleeves at different levels, various outer diameter ball seat is set and coordinates realization with pitching.Pitching external diameter increases step by step, and layering progression is limited.
The hydraulic line of can reducing sliding sleeve of bushing (ZL 201110314142.1) connecting between sliding sleeves at different levels outside sleeve pipe, during pressure break, rely on pressure upwards to conduct and form single diameter ball seat step by step, use the dartlike weapon of single diameter can realize separate stratum fracfturing, layering progression is unrestricted in theory.But in practice process, exist orlop to need perforation to complete, sliding sleeve has cementing concrete ring outward, and pressure break starting pressure is high, dartlike weapon bores the problems such as mill difficulty.
Utility model content:
The technical problems to be solved in the utility model be to provide a kind of can repeat switch sliding sleeve of bushing, this device has been realized latus rectum in sleeve pipe is consistent, utilize supporting switching tools, realize separate stratum fracfturing, without perforation, the operation of brill plug, fracturing work completes for one time, and without level restriction, pressure break starting pressure is low.Overcome existing sliding sleeve of bushing can not make in sleeve pipe latus rectum be consistent or pressure break starting pressure high, dartlike weapon bores the difficult deficiency of mill.
Technical solution adopted in the utility model is: a kind of can repeat switch sliding sleeve of bushing, comprise top connection, landing nipple, urceolus sandblast body and lower contact; Top connection, landing nipple, urceolus sandblast body are connected from top to bottom in turn with lower contact, on the wiper block of urceolus sandblast body, have sandblast hole, pre-filled material in this sandblast hole, inner core is arranged on urceolus sandblast body inner side, inner core blocks the sandblast hole of urceolus sandblast body and seals by V-arrangement combination sealing, inner core upper end is designed to pawl spring, on pawl spring, be designed with locking spring plate, locking spring plate matches with the positioning groove on the inwall of landing nipple lower end, on the inwall of landing nipple upper end, have groove, inner core lower end has inner core sandblast hole.
The beneficial effects of the utility model are: the utility model can make latus rectum in sleeve pipe be consistent, and utilizes supporting switching tools, realizes separate stratum fracfturing, and without perforation, the operation of brill plug, fracturing work completes for one time, and without level restriction, pressure break starting pressure is low.
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.
The specific embodiment:
As shown in Figure 1, a kind of can repeat switch sliding sleeve of bushing, comprise top connection 1, landing nipple 2, urceolus sandblast body 3 and lower contact 4; Top connection 1, landing nipple 2, urceolus sandblast body 3 are connected from top to bottom in turn with lower contact 4, on the wiper block of urceolus sandblast body 3, have sandblast hole, pre-filled material in this sandblast hole, inner core 5 is arranged on urceolus sandblast body 3 inner sides, inner core 5 blocks the sandblast hole of urceolus sandblast body 3 and seals by V-arrangement combination sealing 6, inner core 5 upper ends are designed to pawl spring, on pawl spring, be designed with locking spring plate 9, locking spring plate 9 matches with the positioning groove 8 on landing nipple 2 lower end inwalls, on landing nipple 2 upper end inwalls, have groove, inner core 5 lower ends have inner core sandblast hole 7.
During work, the utility model two ends are connected with sleeve pipe, fashionable under sliding sleeve, inner core 5 is in closed condition, open on wiper block in the sandblast hole of urceolus sandblast body 3, pre-filled material in hole, and wiper block and borehole wall gap are less, during cementing operation, can effectively reduce the thickness of cementing concrete ring outside sandblast hole, to reduce pressure break starting pressure.When need are opened sliding sleeve, be lowered to sliding sleeve switch instrument, utilize sliding sleeve inner core 5 upper end step, upwards lift inner core 5, locking spring plate 9 is regained under certain force, and inner core 5 is up, when inner core locking spring plate 9 enters landing nipple 2 upper end groove, sliding sleeve switch tool switch key is slipped out of the hand with inner core 5 under the interior step extruding of top connection 1, and inner core sandblast hole 7 is communicated with the sandblast hole of urceolus sandblast body 3, can carry out pressing crack construction.
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 (1)
1. can a repeat switch sliding sleeve of bushing, comprise top connection (1), landing nipple (2), urceolus sandblast body (3) and lower contact (4), it is characterized in that: top connection (1), landing nipple (2), urceolus sandblast body (3) is connected from top to bottom in turn with lower contact (4), on the wiper block of urceolus sandblast body (3), have sandblast hole, pre-filled material in this sandblast hole, inner core (5) is arranged on urceolus sandblast body (3) inner side, inner core (5) blocks the sandblast hole of urceolus sandblast body (3) and seals by V-arrangement combination sealing (6), inner core (5) upper end is designed to pawl spring, on pawl spring, be designed with locking spring plate (9), locking spring plate (9) matches with the positioning groove (8) on the inwall of landing nipple (2) lower end, on the inwall of landing nipple (2) upper end, have groove, inner core (5) lower end has inner core sandblast hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320500496.XU CN203463073U (en) | 2013-08-15 | 2013-08-15 | Sleeve pipe slide sleeve capable of being repeatedly opened and closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320500496.XU CN203463073U (en) | 2013-08-15 | 2013-08-15 | Sleeve pipe slide sleeve capable of being repeatedly opened and closed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463073U true CN203463073U (en) | 2014-03-05 |
Family
ID=50175445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320500496.XU Expired - Fee Related CN203463073U (en) | 2013-08-15 | 2013-08-15 | Sleeve pipe slide sleeve capable of being repeatedly opened and closed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463073U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840163A (en) * | 2015-01-15 | 2016-08-10 | 深圳市百勤石油技术有限公司 | Ball seat assembly and ball-pitching sliding sleeve type fracturing device |
| CN107869326A (en) * | 2016-09-23 | 2018-04-03 | 中石化石油工程技术服务有限公司 | Switching sliding sleeve |
| CN109469470A (en) * | 2018-12-20 | 2019-03-15 | 中国海洋石油集团有限公司 | A kind of horizontal well naked eye staged fracturing equipment |
-
2013
- 2013-08-15 CN CN201320500496.XU patent/CN203463073U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840163A (en) * | 2015-01-15 | 2016-08-10 | 深圳市百勤石油技术有限公司 | Ball seat assembly and ball-pitching sliding sleeve type fracturing device |
| CN105840163B (en) * | 2015-01-15 | 2019-03-12 | 深圳市百勤石油技术有限公司 | Ball seat component and pitching sliding sleeve fracturing device |
| CN107869326A (en) * | 2016-09-23 | 2018-04-03 | 中石化石油工程技术服务有限公司 | Switching sliding sleeve |
| CN109469470A (en) * | 2018-12-20 | 2019-03-15 | 中国海洋石油集团有限公司 | A kind of horizontal well naked eye staged fracturing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20150815 |
|
| EXPY | Termination of patent right or utility model |