CN2731092Y - Released dropped sand blasting device - Google Patents
Released dropped sand blasting device Download PDFInfo
- Publication number
- CN2731092Y CN2731092Y CN 200420092491 CN200420092491U CN2731092Y CN 2731092 Y CN2731092 Y CN 2731092Y CN 200420092491 CN200420092491 CN 200420092491 CN 200420092491 U CN200420092491 U CN 200420092491U CN 2731092 Y CN2731092 Y CN 2731092Y
- Authority
- CN
- China
- Prior art keywords
- sand blasting
- dropped
- released
- separate
- pawl spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
Disclosed is a released dropped sand blasting device, belonging to a downhole tool for oil field development. The released dropped sand blasting device comprise a connector 1, a sand blasting body 2, a sand blasting shield 3, a sliding bush 4, a pawl spring 5, a lower connector 6, and a locking block 7. The connector 1 is connected with the sand blasting body 2, the locking block 7 is provided between the sand blasting shield 3 and the lower connector 6, the sliding bush 4 is arranged in the sand blasting shield 3, and the pawl spring 5 is arranged in the pawl spring 5. If deposited sand is not washed cleanly while salvaging the dropped lower section, a grapnel anchor can be released to be washed again, so that the safety for the separate-layer fracturing of pipe columns can be further improved. At present, dropped separate-layer fracturing pipe columns only can be fractured to two layers, and the separate-layer fracturing level can be improved to three to four layers by two to three dropped sand blasters which are matched with the pipe columns, and the safety of more than three-layer separate-layer fracturing can be improved.
Description
Technical field:
The utility model is oil field development down-hole facility, specifically, is to move back disjoint sandblaster.
Background technology:
The used disjoint sandblaster in oil field is made up of top connection, sandblast body, sandblast guard shield, sliding sleeve, pawl spring, lower contact lock dog at present.The throwing steel ball is suppressed and is made sliding sleeve descending in the dividing potential drop process; on when carrying pawl spring shrink; this disjoint sandblaster takes off into two sections; after the dividing potential drop construction is finished; epimere proposes with the casing protection packer; hypomere need descend special-purpose fishing tool to salvage while washing; because there is the easy desilting of distance of 50cm hypomere and packing element position; add reasons such as fishing string elongation, the salvaging process tends to occur the sand of joint area and does not also rinse well, and fishing tool has just dragged for the situation of disjoint sandblaster hypomere; dragging for back well-flushing passage is just closed in the dust; because sand setting is not rinsed totally, lower packer is easy to be stuck in the well by sand setting, causes overhaul.
Summary of the invention:
The purpose of this utility model is to provide a kind of can repeat the salvaging operation, else can move back disjoint sandblaster thereby avoid overhaul to improve the separate stratum fracfturing level simultaneously.
The utility model is achieved in that and comprises joint 1, sandblast body 2, sandblast guard shield 3, sliding sleeve 4, pawl spring 5, lower contact 6, lock dog 7, joint 1 is connected with sandblast body 2, be provided with lock dog 7 between sandblast guard shield 3 and the lower contact 6, sliding sleeve 4 is housed in the sandblast guard shield 3, pawl spring 5 is housed in the lower contact 6.
The utility model also adopts following technical scheme:
In the top connection 1 left hand thread is arranged.
Sliding sleeve 4 obstructed diameters.
Advantage of the present utility model is: employing can be moved back disjoint sandblaster, even sand setting does not dash by wash clean when salvaging the hypomere that disconnects, also can back out and drag for anchor, and flushing can further improve the safety of separate stratum fracfturing tubing string again; Present disconnection dividing potential drop tubing string can only be pressed two-layer, adopts 2-3 disjoint sandblaster assorted column jacket, can make the separate stratum fracfturing rank bring up to the 3-4 layer.Make separate stratum fracfturing safety raising more than three layers.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
As shown in the figure, the top connection 1 that can move back disjoint sandblaster and be on disjoint sandblaster principle basis the disjoint sandblaster hypomere changes reversible into, former disjoint sandblaster hypomere adopts right-handed thread, and left hand thread is adopted in the top connection 1 that can move back disjoint sandblaster, when salvaging the bottom tubing string, if card well situation, can just change oil pipe and withdraw from and drag for anchor, salvage again after washing top of fish again.
Adopt the sliding sleeve 4 of obstructed diameter can increase the rank of separate stratum fracfturing.
Claims (3)
1, can move back disjoint sandblaster, comprise joint (1), sandblast body (2), sandblast guard shield (3), sliding sleeve (4), pawl spring (5), lower contact (6), lock dog (7), it is characterized in that: joint (1) is connected with sandblast body (2), be provided with lock dog (7) between sandblast guard shield (3) and the lower contact (6), sliding sleeve (4) is housed in the sandblast guard shield (3), pawl spring (5) is housed in the lower contact (6).
2, the disjoint sandblaster that moves back according to claim 1 is characterized in that: top connection has left hand thread on (1).
3, the disjoint sandblaster that moves back according to claim 1 is characterized in that: sliding sleeve (4) is axially obstructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092491 CN2731092Y (en) | 2004-09-20 | 2004-09-20 | Released dropped sand blasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092491 CN2731092Y (en) | 2004-09-20 | 2004-09-20 | Released dropped sand blasting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731092Y true CN2731092Y (en) | 2005-10-05 |
Family
ID=35051429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420092491 Expired - Lifetime CN2731092Y (en) | 2004-09-20 | 2004-09-20 | Released dropped sand blasting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731092Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173606B (en) * | 2007-03-16 | 2010-06-02 | 安东石油技术（集团）有限公司 | Controllable disjoint sandblaster |
| CN101173607B (en) * | 2007-05-30 | 2010-08-18 | 安东石油技术（集团）有限公司 | Disjointing controllable multi-layer fracturing tubular pile device of sandblaster and method for controlling disjointing |
| CN112177567A (en) * | 2020-12-01 | 2021-01-05 | 东营市汇诚石油工程技术有限责任公司 | Door-closable fracturing sliding sleeve and using method thereof |
-
2004
- 2004-09-20 CN CN 200420092491 patent/CN2731092Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173606B (en) * | 2007-03-16 | 2010-06-02 | 安东石油技术（集团）有限公司 | Controllable disjoint sandblaster |
| CN101173607B (en) * | 2007-05-30 | 2010-08-18 | 安东石油技术（集团）有限公司 | Disjointing controllable multi-layer fracturing tubular pile device of sandblaster and method for controlling disjointing |
| CN112177567A (en) * | 2020-12-01 | 2021-01-05 | 东营市汇诚石油工程技术有限责任公司 | Door-closable fracturing sliding sleeve and using method thereof |
| CN112177567B (en) * | 2020-12-01 | 2021-04-02 | 东营市汇诚石油工程技术有限责任公司 | Door-closable fracturing sliding sleeve and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140920 Granted publication date: 20051005 |