CN201593395U - Double-control water injection well mouth check valve - Google Patents
Double-control water injection well mouth check valve Download PDFInfo
- Publication number
- CN201593395U CN201593395U CN2010200149263U CN201020014926U CN201593395U CN 201593395 U CN201593395 U CN 201593395U CN 2010200149263 U CN2010200149263 U CN 2010200149263U CN 201020014926 U CN201020014926 U CN 201020014926U CN 201593395 U CN201593395 U CN 201593395U
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- China
- Prior art keywords
- valve
- water injection
- seat
- ball
- injection well
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- 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
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Abstract
The utility model discloses a double-control water injection well mouth check valve, which comprises a left upper valve, a left check valve, a left valve joint, a left lower valve, an upper three-way pipe, a right upper valve, a right check valve, a right valve joint, a right lower valve and a lower three-way pipe, wherein the upper three-way pipe has three ports, and the left port of the upper three-way pipe is connected with the left upper valve; the left upper valve, the left check valve, the left valve joint and the left lower valve are sequentially connected; the lower three-way pipe has three ports, the left port of the lower three-way pipe is connected with the left lower valve, the right port of the lower three-way pipe is connected with the right upper valve; the right upper valve, the right check valve, the right valve joint and the right lower valve are sequentially connected; and the right lower valve is connected with the right port of the lower three-way pipe. When the water injection well stops the injection, the check valve are closed to prevent formation water from returning to a ground water injection pipeline, so as to avoid economic losses caused by the injection stop of the water injection well; and when the check valves are damaged and required to be replaced, the water injection well is not required to stop the injection and release the pressure, so as to avoid economic losses caused by the injection stop of the water injection well.
Description
Technical field:
The utility model relates to the device that the water injection well in oil fields well head is used, and is a kind of pair of control water injection well well head ball-and-seat.
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.For this reason, a kind of water injection well well head ball-and-seat has been used at the scene, 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.But these water injection well well head ball-and-seat designs are unreasonable, damage easily, application life is short, change also inconvenient, bigger problem is that water injection well need stop to annotate and puts pressure when changing, and causes the fluctuation of water injection well cylinder pressure, causes some water filling tool failures, do not reach waterflooding requirement, also can cause environment pollution when putting pressure.Therefore, the water injection well well head ball-and-seat that uses at present can cause economic loss equally.
Summary of the invention:
The purpose of this utility model is a kind of pair of control water injection well well head ball-and-seat of design, when making water injection well stop annotating for some reason, being injected into injection water in the stratum can not return and tell in the Hui Jing, avoid water injection well to shake out, guarantee the water injection well water filling that drives a well again smoothly, and do not need water injection well to stop annotating when changing ball-and-seat and put pressure, avoid stopping the economic loss that casting comes because of water injection well.
The purpose of this utility model is achieved in that by upper left valve, left side ball-and-seat, left side Valve joint, the lower-left valve, last tee piece, upper right valve, right ball-and-seat, right Valve joint, the bottom right valve, following tee piece is formed, last tee piece has three ports, last tee piece left side port is connected with upper left valve, upper left valve, left side ball-and-seat, left side Valve joint, the lower-left valve connects successively, following tee piece has three ports, the lower-left valve is connected with the left side port of following tee piece, last tee piece right side port is connected with upper right valve, upper right valve, right ball-and-seat, right Valve joint, the bottom right valve connects successively, and the bottom right valve is connected with the right side port of following tee piece.
Ball-and-seat top, a left side is adopted with upper left valve and is threaded, and left ball-and-seat bottom is adopted with left Valve joint and is threaded, and right ball-and-seat top is adopted with upper right valve and is threaded, and right ball-and-seat bottom is adopted with right Valve joint and is threaded.
Left side Valve joint has pressure relief opening, and right Valve joint has pressure relief opening.
The beneficial effects of the utility model are: after water injection well stops to annotate for some reason, ball-and-seat is closed, stop formation water to return the ground waterflood-transmission line, the stratum can not produce excitement, can not shake out, and water filling smoothly again can drive a well after stopping annotating, avoid water injection well to stop to annotate the back for some reason and produce economic loss, when after ball-and-seat damages, needing to change, do not need water injection well to stop annotating and put pressure, avoided stopping the economic loss that casting comes because of water injection well.
Description of drawings:
Accompanying drawing is the assembling drawing of the utility model embodiment.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model embodiment is described.
See by figure, the utility model is by upper left valve 1, left side ball-and-seat 2, left side Valve joint 3, lower-left valve 4, last tee piece 5, upper right valve 6, right ball-and-seat 7, right Valve joint 8, bottom right valve 9, following tee piece 10 is formed, last tee piece 5 has three ports, last tee piece 5 left side ports are connected with upper left valve 1, upper left valve 1, left side ball-and-seat 2, left side Valve joint 3, lower-left valve 4 connects successively, following tee piece 10 has three ports, lower-left valve 4 is connected with the left side port of following tee piece 10, last tee piece 5 right side ports are connected with upper right valve 6, upper right valve 6, right ball-and-seat 7, right Valve joint 8, bottom right valve 9 connects successively, and bottom right valve 9 is connected with the right side port of following tee piece 10.Ball-and-seat 2 tops, a left side are adopted with upper left valve 1 and are threaded, and left ball-and-seat 2 bottoms are adopted with left Valve joint 3 and are threaded; Right ball-and-seat 7 tops are adopted with upper right valve 6 and are threaded, and right ball-and-seat 7 bottoms are adopted with right Valve joint 8 and are threaded, and are convenient to dismounting, change, install.Left side Valve joint 3 has pressure relief opening 11, and right Valve joint 8 has pressure relief opening 12, and by-pass valve control is installed on pressure relief opening, can put pressure when changing ball-and-seat, ensures safety in production.
(port and injection well head assembly weld together last tee piece in 5, port and ground waterflood-transmission line welding in the following tee piece 10.Inject water in the ground waterflood-transmission line enters two control water injection well well head ball-and-seats, flow into injection well head assembly behind the jack-up valve ball and inject into well downwards.Two ball-and-seats can divide independent use, after a ball-and-seat that is using damages, open the last lower valve of inactive ball-and-seat correspondence earlier, close the last lower valve of the ball-and-seat correspondence that needs replacing, bleed off and be mounted to original position again after pressure will take off maintenance with the ball-and-seat that is threaded, same method can be changed another ball-and-seat, therefore, do not need water injection well to stop annotating and put pressure, normally water filling of water injection well.
Claims (3)
1. two control water injection well well head ball-and-seat, by upper left valve (1), left side ball-and-seat (2), left side Valve joint (3), lower-left valve (4), last tee piece (5), upper right valve (6), right ball-and-seat (7), right Valve joint (8), bottom right valve (9), following tee piece (10) is formed, it is characterized in that: going up tee piece (5) has three ports, last tee piece (5) left side port is connected with upper left valve (1), upper left valve (1), left side ball-and-seat (2), left side Valve joint (3), lower-left valve (4) connects successively, following tee piece (10) has three ports, lower-left valve (4) is connected with the left side port of following tee piece (10), last tee piece (5) right side port is connected with upper right valve (6), upper right valve (6), right ball-and-seat (7), right Valve joint (8), bottom right valve (9) connects successively, and bottom right valve (9) is connected with the right side port of following tee piece (10).
2. according to claim 1 pair of control water injection well well head ball-and-seat, it is characterized in that: left ball-and-seat (2) top is adopted with upper left valve (1) and is threaded, ball-and-seat (2) bottom, a left side is adopted with left Valve joint (3) and is threaded, right ball-and-seat (7) top is adopted with upper right valve (6) and is threaded, and right ball-and-seat (7) bottom is adopted with right Valve joint (8) and is threaded.
3. according to claim 1 pair of control water injection well well head ball-and-seat, it is characterized in that: left Valve joint (3) has pressure relief opening (11), and right Valve joint (8) has pressure relief opening (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200149263U CN201593395U (en) | 2010-01-10 | 2010-01-10 | Double-control water injection well mouth check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200149263U CN201593395U (en) | 2010-01-10 | 2010-01-10 | Double-control water injection well mouth check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201593395U true CN201593395U (en) | 2010-09-29 |
Family
ID=42775462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200149263U Expired - Fee Related CN201593395U (en) | 2010-01-10 | 2010-01-10 | Double-control water injection well mouth check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201593395U (en) |
-
2010
- 2010-01-10 CN CN2010200149263U patent/CN201593395U/en not_active Expired - Fee Related
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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: 20100929 Termination date: 20120110 |