CN201753594U - Horizontal well one-way valve - Google Patents
Horizontal well one-way valve Download PDFInfo
- Publication number
- CN201753594U CN201753594U CN2010202938396U CN201020293839U CN201753594U CN 201753594 U CN201753594 U CN 201753594U CN 2010202938396 U CN2010202938396 U CN 2010202938396U CN 201020293839 U CN201020293839 U CN 201020293839U CN 201753594 U CN201753594 U CN 201753594U
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- CN
- China
- Prior art keywords
- baffle ring
- valve seat
- valve
- ball
- horizontal well
- 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
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Abstract
A horizontal well one-way valve comprises an upper joint, an upper baffle ring, a lower baffle ring, a spring, a valve ball, a seal ring, a valve base, a valve base sleeve and a screen plug. The valve base, the valve base sleeve and the screen plug are connected with the upper joint in turn, the valve ball is arranged on the valve base and the valve base sleeve, the upper baffle ring, the spring and the lower baffle ring are mounted on the valve ball in the upper joint inner cavity in turn. The utility model has advantages that oil sleeves are communicated, an overflow well blowout can be prevented, the midway plugging of a packer can be prevented, the sealing of the horizontal well is reliable, the valve, a screen tube and a pipe plug can form an integrated design, the structure is compact, and the cost is low, and the utility model can be widely applied to the horizontal downhole operation process for oil extraction.
Description
One, technical field
The utility model relates to oil exploitation and is used for horizontal well separate layer water injection string underground work instrument, particularly a kind of horizontal well ball-and-seat.
Two, background technology
At present, the ball-and-seat of oilfield exploitation The field mainly is made up of valve ball, valve seat, with the supporting application of screen casing plug.The ball-and-seat of this structure has been brought into play important function for the straight well working string, but also exists following shortcoming or deficiency simultaneously: 1. be lowered in the process at water injection string, the liquid in the pit shaft directly enters oil pipe by screen casing, valve seat; 2. in straight well, valve ball relies on gravity to be sitting on the valve seat, forms the tubing string sealing, in horizontal well, because of ball-and-seat is operated in horizontal segment, has lost action of gravity, and valve ball is difficult to be sitting in formation sealing on the valve seat, and water injection string was lost efficacy; 3. for overflow well, in the process of going into the well, well liquid is from the ejection of oil pipe upper end, and the operating personnel emits the spray operation, is not easy to operation, is unfavorable for safety and environmental protection; 4. when oil pipe is gone into the well excessive velocities, enter and fall after rise rapidly after the interior well liquid of oil pipe rises to peak, produce hydraulic blow, packer is set midway, cause operation to do over again, increase cost of production, prolong duty cycle.
Three, summary of the invention
The purpose of this utility model provides a kind of horizontal well ball-and-seat, adopts valve, screen casing, plug integrated design structure, prevents effectively or overcomes the shortcoming and defect that exists in the above-mentioned prior art.
Horizontal well ball-and-seat described in the utility model, comprise top connection, upper baffle ring, lower baffle ring, spring, valve ball, sealing ring, valve seat, valve seat cover, screen blinding, it is characterized in that described valve seat, valve seat cover, screen blinding are connected with top connection in turn, valve ball is placed in valve seat, valve seat puts, and upper baffle ring, spring, lower baffle ring are installed on the valve ball of top connection inner chamber in turn.
Wherein, described top connection top is provided with step in the location.Described upper baffle ring is installed under the interior step in top connection location, and locatees mutually with it.Described lower baffle ring is up-small and down-big outer step structure, and its top is installed in the central aperture of upper baffle ring.Described spring housing is contained on the lower baffle ring under the upper baffle ring.Described valve seat puts and is provided with interior step, and valve seat is installed between the top of the interior step of valve seat cover and screen blinding, compresses valve seat by screen blinding.Described screen blinding middle and upper part is the empty tube shape structure, and the lower end is a blind hole, is laid with the overcurrent duct on its sky barrel.
The utility model has following advantage compared with prior art:
1, oil jacket is communicated with;
2, overflow well blowout prevention;
3, prevent that packer from setting midway;
4, the horizontal well sealing is reliable;
5, valve, screen casing, plug integrated design, compact conformation reduces cost.
Four, description of drawings
Accompanying drawing is a kind of example structure schematic diagram of the present utility model
Five, the specific embodiment
Consult accompanying drawing, a kind of horizontal well ball-and-seat comprises top connection 1, upper baffle ring 2, lower baffle ring 3, spring 4, valve ball 5, sealing ring 6, valve seat 7, valve seat cover 8, screen blinding 9.Valve seat 7, valve seat cover 8, screen blinding 9 are connected with top connection 1 in turn, and valve ball 5 is placed on valve seat 7, the valve seat cover 8, and upper baffle ring 2, spring 4, lower baffle ring 3 are installed on the valve ball 5 of top connection 1 inner chamber in turn.
When going into the well, the utility model is connected to the bottom of separate injection tubing string, lower baffle ring 3 is sitting in valve ball 5 all the time and forms sealing on the valve seat 7, and certain compressive force is arranged under the compression force of spring 4.In the process of going into the well, have only the liquid level difference in oil jacket annular space and the sleeve pipe to reach certain value, when acting on the compressive force of valve ball 5 greater than spring 4, the compressive force that liquid in the sleeve pipe just can overcome spring 4 is pushed valve ball 5 open and is entered in the oil pipe, thereby has guaranteed that the liquid level in the oil pipe is lower than the liquid level of oil jacket annular space all the time.For overflow well, just can prevent that well liquid from spraying from the oil pipe top in separate injection tubing string is gone into the well process; Also can prevent to produce hydraulic blow, avoid packer to set midway, guarantee smooth completion.
Go into the well put in place after, the utility model is in horizontal segment, the sealing of valve ball 5 and valve seat 7 is that the compressive force by spring 4 forms, and has guaranteed the sealing reliability of the utility model in packer setting and the injecting process.
Claims (7)
1. horizontal well ball-and-seat, comprise top connection, upper baffle ring, lower baffle ring, spring, valve ball, sealing ring, valve seat, valve seat cover, screen blinding, it is characterized in that described valve seat, valve seat cover, screen blinding are connected with top connection in turn, valve ball is placed in valve seat, valve seat puts, and upper baffle ring, spring, lower baffle ring are installed on the valve ball of top connection inner chamber in turn.
2. horizontal well ball-and-seat according to claim 1 is characterized in that described top connection top is provided with step in the location.
3. horizontal well ball-and-seat according to claim 1 and 2 is characterized in that described upper baffle ring is installed under the interior step in top connection location, and locatees mutually with it.
4. horizontal well ball-and-seat according to claim 1 is characterized in that described lower baffle ring is up-small and down-big outer step structure, and its top is installed in the central aperture of upper baffle ring.
5. horizontal well ball-and-seat according to claim 1 is characterized in that described spring housing is contained on the lower baffle ring under the upper baffle ring.
6. horizontal well ball-and-seat according to claim 1 is characterized in that described valve seat puts to be provided with interior step, and valve seat is installed between the top of the interior step of valve seat cover and screen blinding, compresses valve seat by screen blinding.
7. according to claim 1 or 6 described horizontal well ball-and-seats, it is characterized in that described screen blinding middle and upper part is the empty tube shape structure, the lower end is a blind hole, is laid with the overcurrent duct on its sky barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202938396U CN201753594U (en) | 2010-08-13 | 2010-08-13 | Horizontal well one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202938396U CN201753594U (en) | 2010-08-13 | 2010-08-13 | Horizontal well one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753594U true CN201753594U (en) | 2011-03-02 |
Family
ID=43621326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202938396U Expired - Fee Related CN201753594U (en) | 2010-08-13 | 2010-08-13 | Horizontal well one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201753594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130853A (en) * | 2019-06-12 | 2019-08-16 | 易鲁川 | A kind of water injection well ball-and-seat |
-
2010
- 2010-08-13 CN CN2010202938396U patent/CN201753594U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130853A (en) * | 2019-06-12 | 2019-08-16 | 易鲁川 | A kind of water injection well ball-and-seat |
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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: 20110302 Termination date: 20110813 |