CN2846732Y - Non-casting ball type blocking pressure signle flow device - Google Patents
Non-casting ball type blocking pressure signle flow device Download PDFInfo
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- CN2846732Y CN2846732Y CN 200520092747 CN200520092747U CN2846732Y CN 2846732 Y CN2846732 Y CN 2846732Y CN 200520092747 CN200520092747 CN 200520092747 CN 200520092747 U CN200520092747 U CN 200520092747U CN 2846732 Y CN2846732 Y CN 2846732Y
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Abstract
The utility model relates to a non-ball throwing type pressure blocking signle flow device which is composed of a main body 1, a hanging supporting body 2, an inner sealing ring 3, an outer sealing ring 4, a piston 5, a shearing pin 6, a restoring spring 7 and a limiting sleeve 8, wherein the upper part of the inner wall of the main body 1 is connected with the hanging supporting body 2 by screw threads, the inner part of an inner circular surface sealing groove and the inner part of an outer circular surface sealing groove of the hanging supporting body 2 are respectively provided with the sealing ring 3 and the sealing ring 4, a piston 5 is arranged in a cavity; the hanging supporting body 2 and the cavity are connected and fixed by the shearing pin 6; the restoring spring 7 is arranged under the piston 5; the limiting sleeve 8 is arranged under the restoring spring 7 and is tightly screwed with the inner wall of the lower end of the hanging supporting body 2 by screw threads. The utility model has the advantages of simple structure, convenient use and reliable work. Because the utility model adopts a piston for presetting shearing pin spring restoring, the utility model can do hollowing out work in the process of installing sleeve pipes, can pour liquid and block pressure without throwing ball when pipe columns are arranged in right positions and can ensure once success of the pressure blocking of hydraulic devices. The utility model can enhance the working performance and the work successful rate of pipe column hydraulic devices of completed wells and fixed wells.
Description
Technical field:
The utility model relates to a kind of downhole hardware that is used for oil, geological system drilling engineering completion well cementation process.
Background technology:
In oil, geological drilling engineering completion and cementing operation process, under tubing string, adopt behind the precalculated position method of pitching plug-hole that hydraulic means such as hydraulic suspension device, hydraulic centralizing device, external packer of pipe are built the pressure at present usually and cut off the work of opening, and then further build the pressure and destroy the seat that builds the pressure and link up circulation, but can not empty sleeve pipe.If will empty sleeve pipe then also need install a single current device again, and complex process, poor reliability makes the service behaviour and the construction success rate of completion well cementation tubing string hydraulic means reduce greatly.
Summary of the invention:
The purpose of this utility model be to provide a kind of simple in structure, reliable operation, easy to use, without the pitching plug-hole down-hole string hydraulic means is built the pressure to cut off the work of opening and the non-ball-throwing type that can improve hydraulic means service behaviour and the construction success rate greatly single current device that builds the pressure.
The utility model is to realize like this.This kind build the pressure the single current device by body, hang support body, interior outer seal ring, piston, cut off, back-moving spring, stop collar form.Inside and outside be provided with step and circulation fluid hole suspension support body be contained in that upper and lower side is respectively equipped with internal and external threads and the internal thread lower end is provided with in the body of step, the support inside and outside is provided with seal groove joint ring is installed, a piston is installed in step below in it, and be connected and fixed with default cutting off, a back-moving spring is installed in hanging the support body cavity again, downside uses is with externally threaded stop collar adjusting fixing, hangs support body middle part and is equipped with a plurality of liquid circulation ports along circumference.During completion practice, this device is connected in the bunch tube of desired location,, injects liquid without pitching down to predetermined well depth.When pressure was enough, liquid entered the confined space of hydraulic means sliding sleeve and the formation of fluid stopping cover, and hydraulic means cuts off the work of opening; When injecting fluid pressure continuation rising, piston cuts off and moves down the compression spring, exposes tap hole, links up circulation.After the termination of pumping, piston under the effect of back-moving spring power, on move to reset and block tap hole, prevent that liquid from refluxing.
The utility model modern design, simple in structure, easy to use, reliable operation, piston is default to cut off spring reset owing to adopted, and can empty in the setting of casing process, and can fluid injection build the pressure without pitching after tubing string puts in place, it is successful to guarantee that hydraulic means builds the pressure once, utilizes it can improve completion well cementation tubing string hydraulic means service behaviour and construction success rate greatly.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model by body 1, hang support body 2, inside and outside joint ring 3,4, piston 5, cut off 6, back-moving spring 7, stop collar 8 form, its structure, assembled relation are as follows: body 1 upper inside wall hangs support body 2 to be threaded, hang support body 2 inside and outside circles and be respectively equipped with joint ring 3,4 in the seal groove, piston 5 is housed in the chamber, and the two is connected and fixed with cutting off 6; Back-moving spring 7 is equipped with in piston 5 belows, and its below is provided with stop collar 8 and tightens with screw thread with suspension support body 2 lower end inwalls.Wherein, body 1 is the pipe body that a upper and lower end is respectively equipped with internal and external screw thread, and its upper inside wall is provided with a step.Be respectively equipped with the step that matches with piston 5 and body 1 inside and outside hanging major diameter position, support body 2 top, the middle part is provided with 1～100 circulation fluid hole along circumference, and top, circulation fluid hole is provided with and cuts off the hole.
Claims (1)
1, a kind of non-ball-throwing type single current device that builds the pressure, because body (1), hang support body (2), inside and outside joint ring (3), (4), piston (5), cut off (6), back-moving spring (7), stop collar (8) forms, it is characterized in that: body (1) upper inside wall hangs support body (2) to be threaded, hang in the inside and outside disc seal groove of support body (2) and be respectively equipped with joint ring (3), (4), piston (5) is housed in the chamber, and the two is connected and fixed with cutting off (6); Back-moving spring (7) is equipped with in piston (5) below, and its below is provided with stop collar (8) and tightens with screw thread with suspension support body (2) lower end inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092747 CN2846732Y (en) | 2005-09-24 | 2005-09-24 | Non-casting ball type blocking pressure signle flow device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520092747 CN2846732Y (en) | 2005-09-24 | 2005-09-24 | Non-casting ball type blocking pressure signle flow device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2846732Y true CN2846732Y (en) | 2006-12-13 |
Family
ID=37512155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520092747 Expired - Fee Related CN2846732Y (en) | 2005-09-24 | 2005-09-24 | Non-casting ball type blocking pressure signle flow device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2846732Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769140A (en) * | 2010-01-07 | 2010-07-07 | 曲占庆 | Device for displacing oil underground, preventing reflow and automatically relieving pressure |
| CN102865040A (en) * | 2012-10-17 | 2013-01-09 | 天津德瑞克石油工具有限公司 | Sleeve buoyancy weight reduction system |
| CN106481301A (en) * | 2015-08-31 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of limit-type Underwell anti-injection sand washing blanking plug of monomer |
| CN107420067A (en) * | 2017-06-29 | 2017-12-01 | 中国海洋石油总公司 | A kind of anti-return well cementation sliding sleeve |
| CN109252830A (en) * | 2018-11-21 | 2019-01-22 | 四川鹏成石油技术开发有限公司 | Presetting system ceramic throttling device and its implementation |
-
2005
- 2005-09-24 CN CN 200520092747 patent/CN2846732Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769140A (en) * | 2010-01-07 | 2010-07-07 | 曲占庆 | Device for displacing oil underground, preventing reflow and automatically relieving pressure |
| CN101769140B (en) * | 2010-01-07 | 2013-06-05 | 西安石油大学 | Device for displacing oil underground, preventing reflow and automatically relieving pressure |
| CN102865040A (en) * | 2012-10-17 | 2013-01-09 | 天津德瑞克石油工具有限公司 | Sleeve buoyancy weight reduction system |
| CN102865040B (en) * | 2012-10-17 | 2015-06-17 | 天津德瑞克石油工具有限公司 | Sleeve buoyancy weight reduction system |
| CN106481301A (en) * | 2015-08-31 | 2017-03-08 | 中国石油化工股份有限公司 | A kind of limit-type Underwell anti-injection sand washing blanking plug of monomer |
| CN107420067A (en) * | 2017-06-29 | 2017-12-01 | 中国海洋石油总公司 | A kind of anti-return well cementation sliding sleeve |
| CN109252830A (en) * | 2018-11-21 | 2019-01-22 | 四川鹏成石油技术开发有限公司 | Presetting system ceramic throttling device and its implementation |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061213 Termination date: 20100924 |