CN2881082Y - Forced single flow valve - Google Patents
Forced single flow valve Download PDFInfo
- Publication number
- CN2881082Y CN2881082Y CN 200620114062 CN200620114062U CN2881082Y CN 2881082 Y CN2881082 Y CN 2881082Y CN 200620114062 CN200620114062 CN 200620114062 CN 200620114062 U CN200620114062 U CN 200620114062U CN 2881082 Y CN2881082 Y CN 2881082Y
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- China
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- spring
- spherical valve
- main body
- utility
- sealing
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- Expired - Lifetime
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Abstract
The utility model relates to a forced uniflow valve used for the well cementing of the oil-gas field development in the petroleum industry, belonging to the category of underground tool, which comprises a main body (1), a spherical valve handle (2), a spring (3) and pore plate (4), wherein the lower part of the main body (1) is processed with a conical surface, coordinating with the semispherical surface of the spherical valve handle (2), the spring (3) is covered on the spherical valve handle (2), and the pore plate (4) compresses the spring (3) and is connected with the main body (1) through the screw thread. The spring of the utility model has always been in the state of compression, so as to make the spherical valve and the sealing surface of the main body always in the airtight state. The external surface of the spherical valve is covered with a layer of special materials, so as to improve the sealing reliability of the uniflow valve, avoid sealing failure caused by the performance of the cement mortar, prevent the cement mortar form inverse flow, avoid blocking phenomena and increase the cementing quality. As the utility model possesses one-way forced sealing performance, open pressure and cement curing can be conducted after well cementing construction, so as to save the drilling time.
Description
Technical field
The utility model relates to the pressure type ball-and-seat that uses in the well cementing operation in the oil-gas field development in the petroleum industry, belongs to the downhole tool class.
Background technology
In the construction of shallow layer thick oil Thermal Production Well Cementing, in order to satisfy the needs of thermal recovery, use adds sand cement well cementation, adopts traditional single current valve (cement casting, in a bakelite ball is arranged) well cementation, in case the single current valve occurring lost efficacy, ash plug phenomenon often occurs staying, cause cementing quality to be difficult to guarantee, increase drilling cost, and must sprain to press to wait and coagulate, influence construction speed.
Summary of the invention
The purpose of this utility model is to provide a kind of shallow layer thick oil Thermal Production Well Cementing pressure type ball-and-seat that prevents that cement paste from refluxing.
A kind of pressure type ball-and-seat mainly is made up of body 1, sphere valve rod 2, spring 3, orifice plate 4, and body 1 lower end is processed with a conical surface, match with the hemisphere face of sphere valve rod 2, be set with spring 3 on the sphere valve rod 2, orifice plate 4 compresses springs 3, and is threaded with body 1 employing.
The utility model spring is in compressive state all the time, makes sphere valve and body sealing surface be in sealing state all the time, avoids the seal failure that causes because of cement slurry property, and can prevent that cement paste from refluxing, and avoids staying ash plug phenomenon, can improve cementing quality.
Description of drawings
Fig. 1 the utility model structural representation
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described in detail.
As shown in Figure 1, the utility model mainly is made up of body 1, sphere valve rod 2, spring 3, orifice plate 4, and body 1 lower end is processed with a conical surface, match with the hemisphere face of sphere valve rod 2, be set with spring 3 on the sphere valve rod 2, orifice plate 4 compresses springs 3, and is threaded with body 1 employing.
Spring of the present utility model is in compressive state all the time, make sphere valve and body sealing surface be in sealing state all the time, sphere valve external surface covers one deck special material, improve the sealing reliability of ball-and-seat, avoid the seal failure that causes because of cement slurry property, and can prevent that cement paste from refluxing, avoid staying ash plug phenomenon, improve cementing quality.Because of it unidirectional forced seal performance that possesses, can open after the cementing operation and press Hou Ning, save drilling time.
Claims (1)
1. pressure type ball-and-seat, mainly form by body (1), sphere valve rod (2), spring (3), orifice plate (4), it is characterized in that: body (1) lower end is processed with a conical surface, match with the hemisphere face of sphere valve rod (2), be set with spring (3) on the sphere valve rod (2), orifice plate (4) compresses spring (3), and is threaded with body (1) employing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620114062 CN2881082Y (en) | 2006-04-10 | 2006-04-10 | Forced single flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620114062 CN2881082Y (en) | 2006-04-10 | 2006-04-10 | Forced single flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881082Y true CN2881082Y (en) | 2007-03-21 |
Family
ID=37880922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620114062 Expired - Lifetime CN2881082Y (en) | 2006-04-10 | 2006-04-10 | Forced single flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881082Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720460A (en) * | 2012-06-08 | 2012-10-10 | 中国石油集团川庆钻探工程有限公司 | Float collar structure in spherical and conical sealing fit |
| CN110984915A (en) * | 2019-12-19 | 2020-04-10 | 牡丹江天庆石油机械设备有限公司 | Elastic paraffin scraping and sand washing type guide cone for oil field |
-
2006
- 2006-04-10 CN CN 200620114062 patent/CN2881082Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720460A (en) * | 2012-06-08 | 2012-10-10 | 中国石油集团川庆钻探工程有限公司 | Float collar structure in spherical and conical sealing fit |
| CN110984915A (en) * | 2019-12-19 | 2020-04-10 | 牡丹江天庆石油机械设备有限公司 | Elastic paraffin scraping and sand washing type guide cone for oil field |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081212 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20081212 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070321 |
|
| EXPY | Termination of patent right or utility model |