CN203129997U - Anti-backflow sand-washing check valve - Google Patents
Anti-backflow sand-washing check valve Download PDFInfo
- Publication number
- CN203129997U CN203129997U CN 201320018276 CN201320018276U CN203129997U CN 203129997 U CN203129997 U CN 203129997U CN 201320018276 CN201320018276 CN 201320018276 CN 201320018276 U CN201320018276 U CN 201320018276U CN 203129997 U CN203129997 U CN 203129997U
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- valve
- valve body
- ball
- sand
- sand washing
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- Expired - Fee Related
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Abstract
An anti-backflow sand-washing check valve comprises a valve body, a valve ball, a valve seat, a fixed connector and a plug, wherein a ball cavity is arranged in the valve body, the valve ball is placed in the ball cavity, the valve seat is installed in a valve hole of the valve body, the fixed connector is connected with the valve body through threads, an internal through hole is formed in the fixed connector, the upper end face of the fixed connector is pressed against the lower end face of the fixed connector in an abutting mode, so that the valve seat is fixed on the valve body, and the valve ball is located on a valve opening of the valve seat. A radial communicating groove is formed in the side face of the valve body and communicated with the ball cavity, a communicating hole is formed in the valve body, and the lower portion of the valve body is connected with the plug. When a pump needs to be stopped to additionally arrange a single sand washing pipe in a sand washing process and the pressure on a well shaft is higher than the pressure inside the sand washing pipe, liquid flow pushes the valve ball to fall back to block a liquid flow backflow channel so that sand washing liquid will not flow reversely, well mouth liquid ejection can be prevented, sand washing operation is convenient to carry out, operation efficiency can be promoted, sand washing time can be shortened, and sand can be prevented from being spat to block the channel.
Description
Technical field
The downhole tool of using when the utility model is oil field well workover sand washing is a kind of antireflux sand washing ball-and-seat.
Background technology
The oil-water well in the oil field sand on stratum in process of production can flow in the pit shaft, in the bottom of gravity effect deposit at pit shaft, can influence the oil-water well ordinary production after sand setting arrives to a certain degree, it need be removed, the main method of removing the shaft bottom sand setting is sand washing.Towards the time process be liquid to be squeezed in the oil pipe flow to down-hole sand face sand is dashed, flow with stream and return out from sleeve pipe.Sand is towards the whereabouts during sand washing, sand clean out pipe also will be constantly to transferring, when after having transferred a sand clean out pipe, needing to add again a sand clean out pipe, it is single to need termination of pumping to change, and can from well in to sand clean out pipe in flow backwards owing to the borehole pressure height this moment, cause the well head hydrojet to make the operation inconvenience, can cause also that sand is counter to be told, stop up the sand washing passage, the sand washing operation can not normally be carried out.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that exists in the existing sand washing, and a kind of antireflux sand washing ball-and-seat is provided, and makes the sand cleaning fluid can reverse flow, prevents the well head hydrojet, makes things convenient for the sand washing operation.
The purpose of this utility model is achieved in that and comprises valve body, valve ball, valve seat, anchor tip, plug, the ball chamber is arranged in the valve body, ball is laid valve ball in the chamber, valve seat is installed in the valve opening of valve body, anchor tip is threaded with valve body, anchor tip has inner via hole, the upper surface of anchor tip suppresses the lower surface of anchor tip, valve seat is fixed on the valve body, valve ball is located on the valve port of valve seat, and side of valve body has radially UNICOM's groove, and radially UNICOM's groove communicates with the ball chamber, have linked hole in the valve body, the bottom of valve body is connected with plug.
The beneficial effects of the utility model are: when sand washing needs termination of pumping to change single wellbore pressure to be higher than the sand clean out pipe internal pressure, liquid stream pushes away valve ball and falls after rise, plugging fluid flows back to circulation road, sand cleaning fluid can reverse flow, can prevent the well head hydrojet, make things convenient for the sand washing operation, can improve operating efficiency, shorten the sand washing time, avoid the anti-blocking channel of telling of sand.
Description of drawings
Accompanying drawing is the assembling drawing of the utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
As shown in the figure, embodiment of the present utility model comprises valve body 1, valve ball 2, valve seat 3, anchor tip 5, plug 6, ball chamber 8 is arranged in the valve body 1, lay valve ball 2 in the ball chamber 8, valve seat 3 is installed in the valve opening of valve body 1, anchor tip 5 is threaded with valve body 1, anchor tip 5 has inner via hole, the upper surface of anchor tip 5 suppresses the lower surface of anchor tip 5, and valve seat 3 is fixed on the valve body 1, and valve ball 2 is located on the valve port of valve seat 3, the side of valve body 1 has radially UNICOM's groove 7, radially UNICOM's groove 7 communicates with ball chamber 8, and radially the width of UNICOM's groove 7 is less than the diameter of valve ball 2, and valve ball 2 can not be flushed away, have linked hole 4 in the valve body 1, linked hole 4 is the upper and lower UNICOM of valve body 1, but directly do not communicate with UNICOM's groove 7 radially, and the bottom of valve body 1 is connected with plug 6, valve seat 3, the axis of the axis runout valve body 1 of anchor tip 5, be in order to increase the size of linked hole 4, to increase circulation area, also reducing difficulty of processing.
Claims (2)
1. antireflux sand washing ball-and-seat, comprise valve body (1), valve ball (2), valve seat (3), anchor tip (5), plug (6), it is characterized in that: ball chamber (8) is arranged in the valve body (1), lay valve ball (2) in the ball chamber (8), valve seat (3) is installed in the valve opening of valve body (1), anchor tip (5) is threaded with valve body (1), anchor tip (5) has inner via hole, the upper surface of anchor tip (5) suppresses the lower surface of anchor tip (5), valve seat (3) is fixed on the valve body (1), valve ball (2) is located on the valve port of valve seat (3), the side of valve body (1) has radially UNICOM's groove (7), radially UNICOM's groove (7) communicates with ball chamber (8), has linked hole (4) in the valve body (1), and the bottom of valve body (1) is connected with plug (6).
2. antireflux sand washing ball-and-seat according to claim 1 is characterized in that: the axis of the axis runout valve body (1) of valve seat (3), anchor tip (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018276 CN203129997U (en) | 2013-01-04 | 2013-01-04 | Anti-backflow sand-washing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018276 CN203129997U (en) | 2013-01-04 | 2013-01-04 | Anti-backflow sand-washing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203129997U true CN203129997U (en) | 2013-08-14 |
Family
ID=48937988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320018276 Expired - Fee Related CN203129997U (en) | 2013-01-04 | 2013-01-04 | Anti-backflow sand-washing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203129997U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120987A (en) * | 2014-07-21 | 2014-10-29 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
| CN104453754A (en) * | 2014-11-12 | 2015-03-25 | 中国石油天然气股份有限公司 | Bidirectional channel check valve and method for washing sand and well by using bidirectional channel check valve |
| CN117948262A (en) * | 2024-03-27 | 2024-04-30 | 中海油能源发展股份有限公司采油服务分公司 | Injection and production pump for coal-bed gas well |
-
2013
- 2013-01-04 CN CN 201320018276 patent/CN203129997U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120987A (en) * | 2014-07-21 | 2014-10-29 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
| CN104120987B (en) * | 2014-07-21 | 2017-01-25 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
| CN104453754A (en) * | 2014-11-12 | 2015-03-25 | 中国石油天然气股份有限公司 | Bidirectional channel check valve and method for washing sand and well by using bidirectional channel check valve |
| CN104453754B (en) * | 2014-11-12 | 2017-02-15 | 中国石油天然气股份有限公司 | Bidirectional channel check valve and method for washing sand and well by using bidirectional channel check valve |
| CN117948262A (en) * | 2024-03-27 | 2024-04-30 | 中海油能源发展股份有限公司采油服务分公司 | Injection and production pump for coal-bed gas well |
| CN117948262B (en) * | 2024-03-27 | 2024-05-28 | 中海油能源发展股份有限公司采油服务分公司 | Injection and production pump for coal-bed gas well |
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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: 20130814 Termination date: 20140104 |