CN202755959U - Novel single-pitch multistage fracturing sliding-sleeve device - Google Patents
Novel single-pitch multistage fracturing sliding-sleeve device Download PDFInfo
- Publication number
- CN202755959U CN202755959U CN 201220389849 CN201220389849U CN202755959U CN 202755959 U CN202755959 U CN 202755959U CN 201220389849 CN201220389849 CN 201220389849 CN 201220389849 U CN201220389849 U CN 201220389849U CN 202755959 U CN202755959 U CN 202755959U
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- CN
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- Prior art keywords
- sliding sleeve
- sliding
- oil pipe
- oil tube
- multistage fracturing
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Abstract
The utility model relates to a shale gas exploitation device, and particularly relates to a novel single-pitch multistage fracturing sliding-sleeve device. According to the technical scheme, the novel single-pitch multistage fracturing sliding-sleeve device comprises an oil tube, a sliding sleeve, a pin and a steel ball, wherein a boss is arranged at the inner portion of the oil tube, and an annulus groove is arranged at the upper portion of the boss. The sliding sleeve is fixed at the upper portion of the annulus groove inside the oil tube through the pin, and sliding sleeve holes are arranged on the sliding sleeve. Oil tube holes are arranged in the oil tube, and the bottom of the sliding sleeve is provided with a sliding sleeve taper hole matched with the steel ball. The novel has the advantages of being capable of achieving the single-pitch multistage fracturing activity, improving the fraction efficiency and fraction length, improving the activity efficiency greatly, reducing the activity cost and producing a better economic benefit and social benefit.
Description
Technical field
The utility model relates to a kind of shale gas quarrying apparatus, particularly an a kind of novel pitching multistage fracturing sliding bush apparatus.
Background technology
How with the natural gas extraction in the stratum out in recent years, along with deepening continuously of shale gas exploitation, exploitation has run into bottleneck, because shale gas is stored in the stratum,, need a technique-namely formation breakdown, and the gas effusion that the inside has is next.The pressure break scope is larger, and gas is overflowed more, and yield can be larger.So pressure break is the key of exploitation, traditional fracturing technology is staged fracturing, and a pitching is the pressure break one-level only, and pressure break progression is short, and the pressure break time is long.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and an a kind of novel pitching multistage fracturing sliding bush apparatus is provided, and can shorten the pressure break time, improves pressure break efficient.
Its technical scheme is: mainly be comprised of oil pipe, sliding sleeve, pin, steel ball, oil pipe inside is provided with boss, boss top is provided with the annular space groove, the top of annular space groove is by the fixing sliding sleeve of pin in the oil pipe, sliding sleeve is provided with sliding sleeving hole, described oil pipe is provided with the oil pipe hole, and the bottom of sliding sleeve is provided with the sliding sleeve taper hole that cooperates with steel ball.
The beneficial effects of the utility model are: can realize the operation of a pitching multistage fracturing, improve pressure break efficient and pressure break length, greatly improve operating efficiency, reduce operating cost, produce good economic benefit and social benefit.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Among the upper figure: oil pipe 1, sliding sleeve 2, pin 3, sliding sleeving hole 4, steel ball 5, oil pipe hole 6, sliding sleeve taper hole 7, boss 8, packer 9, stratum 10, annular space groove 11.
The specific embodiment
By reference to the accompanying drawings 1, the utility model will be further described:
The utility model mainly is comprised of oil pipe 1, sliding sleeve 2, pin 3, steel ball 5, oil pipe 1 inside is provided with boss 8, boss 8 tops are provided with annular space groove 11, fixedly sliding sleeve 2 of pin 3 is passed through on the top of oil pipe 1 interior annular space groove 11, sliding sleeve 2 is provided with sliding sleeving hole 4, described oil pipe 1 is provided with oil pipe hole 6, is provided with the sliding sleeve taper hole 7 that cooperates with steel ball 5 in the middle of the bottom of sliding sleeve 2.
The course of work is as follows: when under the fracturing sliding bush instrument when treating the pressure break bottom, make sealing between oil pipe 1 and the stratum 10 by packer 9, form enclosure space between stratum 10 and the oil pipe 1, then throw steel ball 5, steel ball 5 seals sliding sleeve taper hole 7, suppress from top water filling, when pressure is enough to cut off pin 3, sliding sleeve 2 moves down, and falls on the boss 8 of oil pipe 1, and this moment, sliding sleeving hole 4 was communicated with oil pipe hole 6, water along the hole enter packer packing every confined space, along with the continuous increase of hydraulic pressure, with formation breakdown, finish the fracturing work of this one-level.
If continue pressurization, steel ball 5, is being out of shape, is swelling under the lamination split pressure above Ground because sliding sleeve taper hole 7 is made processing by special material to the 7 continuation pressurizations of sliding sleeve taper hole, and steel ball is just deviate from from the hole, enters in the next stage sliding sleeve, carries out the fracturing work of next stage.The next stage shift sleeve structure is same as described above, and the pressure break principle is also identical.
The operation of a pitching multistage fracturing be can realize in this way, pressure break efficient and pressure break length improved.We are in fracturing work, and a pitching can be opened 20 sliding sleeves, and 60 sliding sleeves are namely opened in three pitchings, have greatly improved operating efficiency, have reduced operating cost, have produced good economic benefit and social benefit.
Claims (1)
1. novel pitching multistage fracturing sliding bush apparatus, it is characterized in that: mainly formed by oil pipe (1), sliding sleeve (2), pin (3), steel ball (5), oil pipe (1) inside is provided with boss (8), boss (8) top is provided with annular space groove (11), fixedly sliding sleeve (2) of pin (3) is passed through on the top of the interior annular space groove of oil pipe (1) (11), sliding sleeve (2) is provided with sliding sleeving hole (4), described oil pipe (1) is provided with oil pipe hole (6), and the bottom of sliding sleeve (2) is provided with the sliding sleeve taper hole (7) that cooperates with steel ball (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389849 CN202755959U (en) | 2012-08-08 | 2012-08-08 | Novel single-pitch multistage fracturing sliding-sleeve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220389849 CN202755959U (en) | 2012-08-08 | 2012-08-08 | Novel single-pitch multistage fracturing sliding-sleeve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202755959U true CN202755959U (en) | 2013-02-27 |
Family
ID=47735146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220389849 Expired - Fee Related CN202755959U (en) | 2012-08-08 | 2012-08-08 | Novel single-pitch multistage fracturing sliding-sleeve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202755959U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US11473401B2 (en) | 2020-02-05 | 2022-10-18 | University Of Electronic Science And Technology Of China | Method for controlling toe-end sliding sleeve of horizontal well based on efficient decoding communication |
-
2012
- 2012-08-08 CN CN 201220389849 patent/CN202755959U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US11473401B2 (en) | 2020-02-05 | 2022-10-18 | University Of Electronic Science And Technology Of China | Method for controlling toe-end sliding sleeve of horizontal well based on efficient decoding communication |
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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: 20130227 Termination date: 20180808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |