CN103696749A - Closable fracture sliding sleeve - Google Patents
Closable fracture sliding sleeve Download PDFInfo
- Publication number
- CN103696749A CN103696749A CN201310509386.4A CN201310509386A CN103696749A CN 103696749 A CN103696749 A CN 103696749A CN 201310509386 A CN201310509386 A CN 201310509386A CN 103696749 A CN103696749 A CN 103696749A
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- Prior art keywords
- sliding sleeve
- joint
- top connection
- lower contact
- closable
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Abstract
The invention relates to a closable fracture sliding sleeve. The closable fracture sliding sleeve comprises an upper joint and a lower joint, wherein a portion of the upper joint extends deep into the lower joint; the sliding sleeve is arranged on the outer wall of the lower joint; the upper joint and the lower joint are fixedly connected with each other in a sliding way through the sliding sleeve; the sliding sleeve is sealed together with the upper and lower joints; the upper joint and the lower joint are provided with pins; a channel is formed inside the upper joint; a valve base is arranged at one end of the channel; a valve ball is movably arranged in the channel; the upper joint and the lower joint are connected with each other through the pins; the upper joint is provided with a through hole; the through hole is formed in a position where the upper joint is connected with the sliding sleeve. The closable fracture sliding sleeve disclosed by the invention is simple in structure, and is high in practicability.
Description
Technical field
The present invention relates to a kind of closable sliding sleeve.
Background technology
In horizontal well in segments multistage fracturing technique, the underground sliding sleeve instrument that uses various oil jackets to be communicated with, its method is with sliding sleeve, net horizontal section packing to be become to some sections according to the packer that need to use of reservoir exploitation, during pressing crack construction, by pitching, opens sliding sleeve, constructs targetedly; After pressing crack construction, the passage that the sliding sleeve outlet of opening enters as later stage exploitation oil gas.The method sliding sleeve after fracturing work completes stays open state always, however horizontal well in exploitation, easily there is pit shaft premature water breakthrough, see the situations such as gas, production capacity is caused to very adverse influence.The sliding sleeve using at present can not be to water breakthrough, see that the serious well section of gas implements effectively to control.
Summary of the invention
For the blowout preventer group control system under water that guarantees to develop has higher reliability, the present invention proposes a kind of fracturing sliding bush that can closing type.
A kind of fracturing sliding bush of closing of the present invention, comprise top connection and lower contact, a part for top connection is goed deep among lower contact, sliding sleeve is arranged on lower contact outer wall, on, between lower contact by slideable being fixedly connected with of sliding sleeve, and sliding sleeve and upper, between lower contact, be sealing setting, top connection and lower contact are provided with pin, top connection inside is provided with passage, one end of passage is provided with valve seat, valve ball is movably arranged in passage, between described top connection and lower contact, by pin, be connected, described top connection is provided with through hole, described through hole is arranged on the position that top connection is connected with sliding sleeve.
Preferably, between described top connection and lower contact, by pin, be connected.
A kind of fracturing sliding bush of closing of the present invention, simple in structure, practical.
Accompanying drawing explanation
Fig. 1 is syndeton schematic diagram of the present invention.
1-top connection in figure; 2-lower contact; 3-sliding sleeve; 4-pin; 5-valve seat; 6-valve ball.
The specific embodiment
A kind of fracturing sliding bush 3 of closing of the present invention, comprise top connection 1 and lower contact 2, a part for top connection 1 is goed deep among lower contact 2, sliding sleeve 3 is arranged on lower contact 2 outer walls, on, between lower contact 2 by slideable being fixedly connected with of sliding sleeve 3, and sliding sleeve 3 is with upper, between lower contact 2, be sealing setting, top connection 1 is provided with pin 4 with lower contact 2, top connection 1 inside is provided with passage, one end of passage is provided with valve seat 5, valve ball 6 is movably arranged in passage, between described top connection 1 and lower contact 2, by pin 4, be connected, described top connection 1 is provided with through hole, described through hole is arranged on the position that top connection 1 is connected with sliding sleeve 3.
During pressure break, ball valve is acted on ball seat, to sleeve pipe pressurization, make the upper and lower pressure reduction of sliding sleeve 3 reach shear pin cut off pressure time, shear pin fracture, pressure promotes sliding sleeve 3 and moves down, and exposes the hydrophthalmia mouth on sliding sleeve 3, for fracturing fluid or oil gas provide flow channel.Sliding sliding sleeve 3 seals play sealing function between cover and lower contact 2, in proppant while preventing pressing crack construction and high density kill mud, stickiness mechanical admixture enters between sliding sleeve 3 and lower contact 2, cause sand card, sliding sleeve 3 not to move down and expose hydrophthalmia, cause turning a layer operation failure.
Claims (2)
1. can close fracturing sliding bush (3) for one kind, it is characterized in that: comprise top connection (1) and lower contact (2), a part for top connection (1) is goed deep among lower contact (2), slideable being fixedly connected with between upper and lower joint (2), top connection (1) is provided with pin (4) with lower contact (2), top connection is provided with passage in (1), and one end of passage is provided with valve seat (5), and valve ball (6) is movably arranged in passage.
2. a kind of fracturing sliding bush (3) of closing as claimed in claim 1, is characterized in that: between described top connection (1) and lower contact (2), by pin (4), be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310509386.4A CN103696749A (en) | 2013-10-25 | 2013-10-25 | Closable fracture sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310509386.4A CN103696749A (en) | 2013-10-25 | 2013-10-25 | Closable fracture sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103696749A true CN103696749A (en) | 2014-04-02 |
Family
ID=50358395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310509386.4A Pending CN103696749A (en) | 2013-10-25 | 2013-10-25 | Closable fracture sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103696749A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707358A (en) * | 2017-10-25 | 2019-05-03 | 中海石油(中国)有限公司上海分公司 | Fracturing string and its fracturing process |
| CN109812250A (en) * | 2017-11-21 | 2019-05-28 | 张家志 | A kind of method of horizontal well open hole packer staged fracturing |
| CN111827983A (en) * | 2020-07-29 | 2020-10-27 | 中国石油天然气股份有限公司 | Water exploration method and device for casing completion horizontal well |
-
2013
- 2013-10-25 CN CN201310509386.4A patent/CN103696749A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707358A (en) * | 2017-10-25 | 2019-05-03 | 中海石油(中国)有限公司上海分公司 | Fracturing string and its fracturing process |
| CN109707358B (en) * | 2017-10-25 | 2023-09-05 | 中海石油(中国)有限公司上海分公司 | Fracturing string and fracturing method thereof |
| CN109812250A (en) * | 2017-11-21 | 2019-05-28 | 张家志 | A kind of method of horizontal well open hole packer staged fracturing |
| CN111827983A (en) * | 2020-07-29 | 2020-10-27 | 中国石油天然气股份有限公司 | Water exploration method and device for casing completion horizontal well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140402 |
|
| WD01 | Invention patent application deemed withdrawn after publication |