CN2734988Y - Wellhead check valve for water injection well - Google Patents
Wellhead check valve for water injection well Download PDFInfo
- Publication number
- CN2734988Y CN2734988Y CN 200420107009 CN200420107009U CN2734988Y CN 2734988 Y CN2734988 Y CN 2734988Y CN 200420107009 CN200420107009 CN 200420107009 CN 200420107009 U CN200420107009 U CN 200420107009U CN 2734988 Y CN2734988 Y CN 2734988Y
- Authority
- CN
- China
- Prior art keywords
- water injection
- valve
- injection well
- ball
- valve body
- 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 - Fee Related
Links
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model relates to a wellhead check valve for a water injection well, which is composed of a ball blocking plug, a valve body, a valve ball, a valve seat and a connecting head, wherein the valve seat is arranged in the lower interior of the valve body; the valve ball is positioned on the valve seat; the ball blocking plug is connected with the upper part of the valve body; the connecting head is welded on the flank of the valve body; a clamping hoop head on the right end of the connecting head is connected with a wellhead device of a water injection well; a clamping hoop head on the lower part of the valve body is connected with a ground water injection pipeline. Injected water enters the wellhead check valve for a water injection well via the ground water injection pipeline and flows into the wellhead device of a water injection well from the connecting head after jacking up the valve ball to be injected into a well downwards; when a water injection well stops pouring because of failures, the valve ball falls to prevent formation water from going back to the ground water injection pipeline; a stratum can not generate agitation and can not generate sand; after injection stops, the wellhead check valve for a water injection well can successfully inject water again, which avoids generating economic loss after injection stops because of failures. The connecting mode of a clamping hoop causes the utility model to have the advantages of convenient installation and convenient dismounting.
Description
One, technical field
The utility model is a kind of water injection well well head ball-and-seat of used for water injection wells in oil fields.
Two, background technology
Because the water injection well strata pressure height that has, when water injection well stops annotating for some reason, be injected into injection water in the stratum and will return and tell in the Hui Jing, and with waterflood-transmission line earthward pumping plant reflux, water filling layer flow in returning the process of telling is big, flow velocity is fast, and the stratum produces exciting, easily reservoir sand is carried out, cause sand to bury water injection string, make it water filling again, the stratum water injection rate reduces, and influences well oil output.Because water filling again is forced to the operation well workover, increase operating cost.Behind sand card tubing string, also can occur during the operation well workover tripping out tubing string smoothly, carry out the heavy repair task of high cost, economic loss is huge.
Three, summary of the invention
The purpose of this utility model is a kind of water injection well well head ball-and-seat of design, when making water injection well stop annotating for some reason, is injected into injection water in the stratum and can not returns and tell in the Hui Jing, avoids water injection well to shake out, and guarantees the water injection well water filling that drives a well again smoothly.
The purpose of this utility model is achieved in that it is made up of the plug of blocking, valve body, valve ball, valve seat, coupling head.Valve seat is installed under the valve body inner, and valve ball is located on the valve seat, and the plug of blocking connects with valve body top, and coupling head is welded on the valve body side.The clip head of coupling head right-hand member connects with injection well head assembly, and the clip head of valve body lower portion connects with the ground waterflood-transmission line.Inject water in the ground waterflood-transmission line enters water injection well well head ball-and-seat, flow into injection well head assembly from coupling head behind the jack-up valve ball and inject into well downwards.
The beneficial effects of the utility model are: after water injection well stopped to annotate for some reason, valve ball fell, and stoped formation water to return the ground waterflood-transmission line, the stratum can not produce excitement, can not shake out, the water filling that can drive a well again smoothly after stopping annotating is avoided water injection well to stop to annotate the back for some reason and is produced economic loss.Its clip connecting mode makes the utility model installation, convenient disassembly.
Four, description of drawings
Accompanying drawing is the assembling drawing of the utility model embodiment.
Five, the specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
Among the figure: the 1st, the plug of blocking, the 2nd, valve body, the 3rd, valve ball, the 4th, valve seat, the 5th, coupling head.Be that the utility model is made up of the plug 1 of blocking, valve body 2, valve ball 3, valve seat 4, coupling head 5.Valve seat 4 is installed in 2 times inside of valve body, and valve ball 3 is located on the valve seat 4, and the plug 1 of blocking connects with valve body 2 tops, and coupling head 5 is welded on valve body 2 sides.The clip head of coupling head 5 right-hand members connects with injection well head assembly, and the clip head of valve body 2 bottoms connects with the ground waterflood-transmission line.Inject water in the ground waterflood-transmission line enters water injection well well head ball-and-seat, jack-up valve ball 3 backs flow into injection well head assembly from coupling head 5 and inject into well downwards.
Claims (1)
1, a kind of water injection well well head ball-and-seat, form by the plug of blocking (1), valve body (2), valve ball (3), valve seat (4), coupling head (5), it is characterized in that: valve seat (4) is installed under the valve body (2) inner, valve ball (3) is located on the valve seat (4), the plug (1) of blocking connects with valve body (2) top, and coupling head (5) is welded on valve body (2) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420107009 CN2734988Y (en) | 2004-10-22 | 2004-10-22 | Wellhead check valve for water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420107009 CN2734988Y (en) | 2004-10-22 | 2004-10-22 | Wellhead check valve for water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2734988Y true CN2734988Y (en) | 2005-10-19 |
Family
ID=35264864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420107009 Expired - Fee Related CN2734988Y (en) | 2004-10-22 | 2004-10-22 | Wellhead check valve for water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2734988Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632155A (en) * | 2015-02-08 | 2015-05-20 | 孔涛 | Flowback preventing device for water injection of well |
| CN108194967A (en) * | 2017-08-24 | 2018-06-22 | 佛山市赛格卫浴有限公司 | A kind of bathroom heating attemperator |
-
2004
- 2004-10-22 CN CN 200420107009 patent/CN2734988Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632155A (en) * | 2015-02-08 | 2015-05-20 | 孔涛 | Flowback preventing device for water injection of well |
| CN108194967A (en) * | 2017-08-24 | 2018-06-22 | 佛山市赛格卫浴有限公司 | A kind of bathroom heating attemperator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |