CN202954784U - Slag prevention check valve for water injection well - Google Patents
Slag prevention check valve for water injection well Download PDFInfo
- Publication number
- CN202954784U CN202954784U CN 201220631347 CN201220631347U CN202954784U CN 202954784 U CN202954784 U CN 202954784U CN 201220631347 CN201220631347 CN 201220631347 CN 201220631347 U CN201220631347 U CN 201220631347U CN 202954784 U CN202954784 U CN 202954784U
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- slag
- valve
- valve body
- ball
- check valve
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Abstract
The utility model relates to a slag prevention check valve for a water injection well and belongs to the technical field of oil extraction equipment. The slag prevention check valve comprises an upper connector, a valve body, a valve ball and a slag sediment barrel, wherein the upper connector, the valve body and the slag sediment barrel are sequentially and relatively fixed from left to right, a left cavity and a right cavity are arranged in the upper connector, a valve ball cover is positioned between the left cavity and the right cavity, a plurality of through holes are arranged in the upper connector, a central hole is positioned in the valve body along the axial direction of the valve body, an uniflow hole is arranged on one side of the central hole along the longitudinal direction of the valve body, a sand setting punched hole is positioned on the other side of the central hole, one end of the uniflow hole is communicated with the central hole, the other end of the uniflow hole serves as a fluid outlet of the check valve, the right cavity of the upper connector is communicated with the slag sediment barrel through the sand setting punched hole, and the valve ball is arranged in the right cavity of the upper connector and arranged on the central hole. The slag prevention check valve is simple in structure, easy to process and low in cost. In a using process, the slag prevention check valve can effectively prevent sand, dirty slag and impurities sinking at the bottom of a water injection pipe column from affecting steel ball sealing, and work reliability of the check valve is guaranteed.
Description
Technical field
The utility model relates to a kind of water injection well anti-slag ball-and-seat, belongs to the oil production equipment technical field.
Background technology
At present, water injection well is commonly used ball-and-seat, valve ball, ball seat, sealing ring etc., consists of.When liquid injects from the downhole oil pipe string, valve ball drops on ball seat, and plugging tubing string can carry out normal water filling operation and the packer envelope that rises; During well workover, well head is opened, and liquid returns to pour in the downhole oil pipe string from the valve bottom and flows to ground, reduces strata pressure, does not cause gusher to rise the downhole oil pipe string and goes out well head.But general valve, owing to being ball-and-seat, usually because of the impurity in injected water, as dirty piece, sand etc., at the bottom of sinking to water injection string, causes that the single current valve fits badly, and causes leakage, has a strong impact on the normal operation of water injection well.
Summary of the invention
The purpose of this utility model is to propose a kind of water injection well anti-slag ball-and-seat, change the structure of existing water injection well with ball-and-seat, with the valve ball that overcomes general valve, fit badly and the leakage problem that causes, the sand structure is led in design, and the employing special material, to realize the effect of sinking to shaft bottom sand, impurity and dirty slag.
The water injection well the utility model proposes anti-slag ball-and-seat, comprise top connection, valve body, valve ball and slag depositing cylinder; Described top connection, valve body and slag depositing cylinder are relative fixing successively from left to right, have two cavitys in left and right in described top connection, between the cavity of two of left and right, are the valve ball cover, have a plurality of through holes on the valve ball cover; Axially have a centre bore along valve body on described valve body, the warp-wise along valve body of centre bore one side has the single current hole, one end and the centre bore in single current hole link, the fluid issuing that the other end in single current hole is ball-and-seat, the opposite side of centre bore has the sand setting perforation, and the sand setting perforation makes right side cavity and the mutual UNICOM of slag depositing cylinder of top connection; Described valve ball is placed in the right side cavity of top connection, and is placed on centre bore.
The water injection well the utility model proposes anti-slag ball-and-seat, it is simple in structure, and handling ease is with low cost.Have the sand setting perforation because valve body has along the length direction of valve body, in use, can effectively prevent preventing to sink to the impact on steel ball sealing of sand, dirty slag and the impurity of water injection string bottom, guaranteed the functional reliability of ball-and-seat.
The accompanying drawing explanation
Fig. 1 is the water injection well that the utility model proposes structural representation with the anti-slag ball-and-seat.
In Fig. 1, the 1st, top connection, 1-1 is the valve ball cover, the 2nd, valve ball, the 3rd, valve body, 3-1 is the single current hole, and 3-2 is the sand setting perforation, and 3-3 is centre bore, the 4th, slag depositing cylinder.
The specific embodiment
The water injection well the utility model proposes anti-slag ball-and-seat, its structure as shown in Figure 1, comprises top connection 1, valve body 3, valve ball 2 and slag depositing cylinder 4.Top connection 1, valve body 3 and slag depositing cylinder 4 are relative fixing successively from left to right.Having two cavitys in left and right in top connection 1, is valve ball cover 1-1 between the cavity of two of left and right, on valve ball cover 1-1, has a plurality of through holes.Axially have a centre bore 3-3 along valve body on valve body 3, the warp-wise along valve body of the side of centre bore 3-3 has single current hole 3-1, an end and the centre bore 3-3 of single current hole 3-1 link, the fluid issuing that the other end of single current hole 3-1 is ball-and-seat, the opposite side of centre bore 3-3 has sand setting perforation 3-2, and sand setting perforation 3-2 makes right side cavity and the mutual UNICOM of slag depositing cylinder 4 of top connection 1.Valve ball 2 is placed in the right side cavity of top connection 1, and is placed on centre bore 3-3.
Below in conjunction with Fig. 1, introduce in detail the course of work that the water injection well the utility model proposes is used the anti-slag ball-and-seat:
During normal water filling, when the right cavity pressure of valve ball cover 1-1 is greater than 3-1 place, single current hole, the valve ball 2 hole 3-3 of closing center, because slag depositing cylinder 4 seals, therefore injected water can not revealed at valve body 3.When injected water has sand, impurity and water injection string fouling dirt piece to fall into bottom, from the sand setting perforation, 3-2 falls into slag depositing cylinder, therefore do not affect the sealing of valve ball 2 and centre bore 3-3.When 3-1 place, single current hole pressure is greater than the right chamber of valve ball cover 1-1, valve ball 2 is opened, and high-pressure fluid flows to valve ball cover 1-1 chamber from single current hole 3-1 through centre bore 3-3, and, to upper reaches, reaches the pressure release purpose.
Claims (1)
1. a water injection well anti-slag ball-and-seat, is characterized in that this ball-and-seat comprises top connection, valve body, valve ball and slag depositing cylinder; Described top connection, valve body and slag depositing cylinder are relative fixing successively from left to right, have two cavitys in left and right in described top connection, between the cavity of two of left and right, are the valve ball cover, have a plurality of through holes on the valve ball cover; Axially have a centre bore along valve body on described valve body, the warp-wise along valve body of centre bore one side has the single current hole, one end and the centre bore in single current hole link, the fluid issuing that the other end in single current hole is ball-and-seat, the opposite side of centre bore has the sand setting perforation, and the sand setting perforation makes right side cavity and the mutual UNICOM of slag depositing cylinder of top connection; Described valve ball is placed in the right side cavity of top connection, and is placed on centre bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631347 CN202954784U (en) | 2012-11-23 | 2012-11-23 | Slag prevention check valve for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220631347 CN202954784U (en) | 2012-11-23 | 2012-11-23 | Slag prevention check valve for water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954784U true CN202954784U (en) | 2013-05-29 |
Family
ID=48460361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220631347 Expired - Fee Related CN202954784U (en) | 2012-11-23 | 2012-11-23 | Slag prevention check valve for water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067532A (en) * | 2019-05-21 | 2019-07-30 | 唐山冀东石油机械有限责任公司 | Lateral ball-and-seat |
-
2012
- 2012-11-23 CN CN 201220631347 patent/CN202954784U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067532A (en) * | 2019-05-21 | 2019-07-30 | 唐山冀东石油机械有限责任公司 | Lateral ball-and-seat |
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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: 20130529 Termination date: 20211123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |