CN201024980Y - An oil field well fixing and self irrigation collision assembly - Google Patents
An oil field well fixing and self irrigation collision assembly Download PDFInfo
- Publication number
- CN201024980Y CN201024980Y CNU2007201479790U CN200720147979U CN201024980Y CN 201024980 Y CN201024980 Y CN 201024980Y CN U2007201479790 U CNU2007201479790 U CN U2007201479790U CN 200720147979 U CN200720147979 U CN 200720147979U CN 201024980 Y CN201024980 Y CN 201024980Y
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- CN
- China
- Prior art keywords
- valve head
- top cap
- valve
- sealing ring
- sliding sleeve
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a well fixing and self-injection press assembly which is strict in sealing and high in safety and includes a sleeve(1), a sliding sleeve(2), a sealing ring(3), a cutting pin(4), a spring pin(5), a valve holder(6), a spring(7), a valve rod(8) and a valve head(9). The lower part of the sliding sleeve(2) is inserted with an internal hole, under which is a ring body(10). The valve head(9) is provided with a sealing ring(11) and a top cap(12), with the sealing ring(11) taking the shape of a flare opening and has a cornice(13) on the lower rim, and the top cap(12) takes the shape of a ball nick. The sealing ring(11) circles the upper part of the valve head(9) and is fixed on the valve head(9) through the top cap(12). The press assembly with such a structure changes the spherical contact into the linear contact, with the contact surface reduced, the pressing force greater and the seal stricter, thus achieving the seal better.
Description
Technical field:
The connector of bunch tube when the utility model relates to the well cementation of a kind of petroleum gas, a kind of specifically well cementation bruising assembly.
Background technology:
Cement the well at present mode great majority of China adopt cased hole completion, said well cementing operation be exactly cement paste by in the sprue bushing of ground, the annular space from the sleeve pipe and the borehole wall behind the shaft bottom returns certain altitude, treat the cement paste Hou Ning of annular space after, finish well cementing operation.In order to prevent that cement paste from blowing back in the sleeve pipe, generally all on sleeve pipe, connect a kind of device one well cementation bruising assembly that cement paste can only one-way flow that impels, be also referred to as float collar, existing well cementation bruising assembly adopts self filling type more.
The seal contact surface of existing self filling type bruising assembly is a sphere; though this on the position random better because contact surface is excessive, small grit is clamped easily and is influenced sealing; in actual use, the bad problem of spacious pressure after therefore regular meeting well cementation occurs.
The utility model content:
Technical problem to be solved in the utility model provides a kind of tight and safe reinforcing oil well self filling type bruising assembly that seals, to solve the deficiencies in the prior art.
For achieving the above object, technical solution of the present utility model is: comprise by pipe box, sliding sleeve, sealing ring, cut off, spring catch, valve core case, spring, valve rod and valve head, an embedded endoporus lower end, sliding sleeve lower end is the torus of the conical surface, valve head is provided with joint ring and top cap, joint ring is bell mouth shape, its lower edge is provided with the cornice to abduction, and the top cap is the segment shape, and seal ring set is fixed on the valve head on valve head top and by the top cap.
Technique effect of the present utility model is: because seal of the present utility model is changed into the combination of cone and spheroid by the spheroid of prior art, make original seal contact surface contact by the corresponding linearity that becomes of sphere contact, contact surface is corresponding to be reduced, the big more sealing of pressure is tight more, thereby better realizes sealing.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Pipe box among the figure-1, sliding sleeve-2, sealing ring-3, cut off-4, spring catch-5, valve core case-6, spring-7, valve rod-8, valve head-9, torus-10, joint ring-11, top cap-12, joint ring-11, top cap-12, cornice-13.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing.
By shown in Figure 1, this reinforcing oil well self filling type bruising assembly comprises pipe box (1), sliding sleeve (2), sealing ring (3), cuts off (4), spring catch (5), valve core case (6), spring (7), valve rod (8) and valve head (9), the torus (10) that an embedded endoporus lower end, sliding sleeve (2) lower end is the conical surface, valve head (9) is provided with joint ring (11) and top cap (12), joint ring (11) is bell mouth shape, its lower edge is provided with the cornice (13) to abduction, top cap (12) is the segment shape, and joint ring (11) is enclosed within valve head (9) top and is fixed on the valve head (9) by top cap (12).
During actual the use, guide shoe or float shoe upper end connect a sleeve pipe, the sleeve pipe upper end connects the bruising assembly, the assembly upper end is connected with other sleeve pipes, what note is the following implantation site that must determine the bruising assembly by the requirement of engineering design and geological design, in the setting of casing process, drilling fluid enters in the sleeve pipe along annular space between joint ring (11) and the top cap (12) under pressure, realizes perfusion drilling fluid purpose.After cementing finishes, when plug runs to the float collar position, to cut off under pressure and cut off (4), the descending contact with joint ring (11) of the torus (10) that an embedded endoporus lower end, sliding sleeve (2) lower end is the conical surface realized sealing.
Claims (1)
1. reinforcing oil well self filling type bruising assembly, comprise pipe box (1), sliding sleeve (2), sealing ring (3), cut off (4), spring catch (5), valve core case (6), spring (7), valve rod (8) and valve head (9), it is characterized in that: the torus (10) that an embedded endoporus lower end, sliding sleeve (2) lower end is the conical surface, valve head (9) is provided with joint ring (11) and top cap (12), joint ring (11) is bell mouth shape, its lower edge is provided with the cornice (13) to abduction, top cap (12) is the segment shape, and joint ring (11) is enclosed within valve head (9) top and is fixed on the valve head (9) by top cap (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201479790U CN201024980Y (en) | 2007-04-29 | 2007-04-29 | An oil field well fixing and self irrigation collision assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201479790U CN201024980Y (en) | 2007-04-29 | 2007-04-29 | An oil field well fixing and self irrigation collision assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024980Y true CN201024980Y (en) | 2008-02-20 |
Family
ID=39098838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201479790U Expired - Fee Related CN201024980Y (en) | 2007-04-29 | 2007-04-29 | An oil field well fixing and self irrigation collision assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024980Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061904A (en) * | 2010-11-20 | 2011-05-18 | 中国石油集团西部钻探工程有限公司 | Automatic grout valve of adjustable pressure difference type |
| CN103061706A (en) * | 2012-12-31 | 2013-04-24 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Casing float shoe for well cementation |
| CN103498645A (en) * | 2013-09-26 | 2014-01-08 | 余金海 | Low shearing adjusting valve |
| CN115522891A (en) * | 2022-11-23 | 2022-12-27 | 大庆市宏博晟达石油机械设备有限公司 | Float collar float shoe applied to oil field well cementation construction |
-
2007
- 2007-04-29 CN CNU2007201479790U patent/CN201024980Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061904A (en) * | 2010-11-20 | 2011-05-18 | 中国石油集团西部钻探工程有限公司 | Automatic grout valve of adjustable pressure difference type |
| CN102061904B (en) * | 2010-11-20 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Automatic grout valve of adjustable pressure difference type |
| CN103061706A (en) * | 2012-12-31 | 2013-04-24 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Casing float shoe for well cementation |
| CN103061706B (en) * | 2012-12-31 | 2016-04-20 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of well cementation casing float shoe |
| CN103498645A (en) * | 2013-09-26 | 2014-01-08 | 余金海 | Low shearing adjusting valve |
| CN115522891A (en) * | 2022-11-23 | 2022-12-27 | 大庆市宏博晟达石油机械设备有限公司 | Float collar float shoe applied to oil field well cementation construction |
| CN115522891B (en) * | 2022-11-23 | 2023-02-03 | 大庆市宏博晟达石油机械设备有限公司 | Float collar float shoe applied to oil field well cementation construction |
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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: 20080220 Termination date: 20100429 |