CN202215200U - Control tubular column for liquid quantitative injection - Google Patents
Control tubular column for liquid quantitative injection Download PDFInfo
- Publication number
- CN202215200U CN202215200U CN2011203243562U CN201120324356U CN202215200U CN 202215200 U CN202215200 U CN 202215200U CN 2011203243562 U CN2011203243562 U CN 2011203243562U CN 201120324356 U CN201120324356 U CN 201120324356U CN 202215200 U CN202215200 U CN 202215200U
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- CN
- China
- Prior art keywords
- control
- ball
- tubing string
- ball seat
- fluid
- 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
The embodiment of the utility model provides a control tubular column for liquid quantitative injection, which comprises a well mouth ball throwing device, a ball seat and a throttling joint, wherein the throttling joint is arranged above the ball seat, a ball is released at a set control point, the throttling joint acts after the ball and injected liquid reach the ball seat together, well mouth injection pressure rises, and injected quantity can be controlled accurately according to the pressure indication. By the control tubular column, the construction failure and severe economic loss caused by deviation of injected quantity can be avoided.
Description
Technical field
The utility model relates to the oil-gas field development field, relates in particular to a kind of fluid quantitative and injects the control tubing string.
Background technology
At present, in oil-gas field development production measure, it is the operation that often runs into that Xiang Jingzhong injects, and generally is through volume calculations, pump speed, pump efficiency, methods such as container metering control fluid injection rate.
The above method can be implemented common operation, and when running into the very little requirement of fluid injection rate and accurately control, method commonly used is just met difficulty, and deviation is arranged slightly, will cause the failure of operation, brings heavy economic losses, can't realize the operation purpose.
Summary of the invention
The utility model embodiment provides a kind of fluid quantitative to inject the control tubing string, can overcome be difficult in the injection process accurately quantitatively control problem, thereby prevent to inject operation process causes the operation failure and brings because of control becomes heavy economic losses.
The utility model embodiment provides a kind of fluid quantitative to inject the control tubing string, and said control tubing string comprises the ball seat and the throttling joint of well head ball-throwing apparatus, down-hole, wherein:
Said throttling joint is installed on the top of ball seat.
Said fluid quantitative injects the control tubing string through the control point pitching in setting, and ball is after fluid arrives ball seat, and the throttling joint is had an effect and made well intake pressure produce the rising variable signal, realizes fluid injection rate control accurately according to said signal.
The top of said throttling joint is provided with a plurality of level pressure and discharges ball seat, injects control to realize repeatedly fluid quantitative.
Can find out by the above-mentioned technical scheme that provides; Said fluid quantitative injects control tubing string bag well head ball-throwing apparatus, oil pipe, reducer union, throttling joint, ball seat, joints, pipe shoe and packer; Said well head ball-throwing apparatus is used to observe the dynamic of liquid and discharges ball at the control point of setting, when ball arrives the ball seat position, because the flow-control effect of throttling joint; Make the fluid pressure in the tubing string raise; Operation control personnel can accurately control the injection rate of fluid according to pressure indicating signal, and said fluid quantitative injects often to replace through fluid quantitative to be realized.Through this control tubing string, just can prevent operation failure and heavy economic losses that fluid injection rate deviation causes.
Description of drawings
Fig. 1 injects the structural representation of control tubing string for the utility model fluid quantitative that embodiment provides.
The specific embodiment
The utility model embodiment provides a kind of fluid quantitative to inject the control tubing string, through this control tubing string, just can prevent the operation failure and the heavy economic losses that cause because of the injection rate deviation.
For better describing the utility model embodiment; Combine accompanying drawing that the specific embodiment of the utility model is described at present; Be illustrated in figure 1 as the structural representation that the utility model fluid quantitative that embodiment provides injects the control tubing string, comprise among Fig. 1 that 1. well heads inject pipeline; 2. well head ball-throwing apparatus; 3. oil pipe; 4. reducer union, 5. small size oil pipe, 6. throttling joint, 7. ball seat, 8. joints; 9. pipe shoe, 10. packer, 11. screen casings, 12. tubing nipples, 13. balls; 14. the observation valve, 15. pitching valves, 16. wellhead blowout preventors, 17. surface pipes, 18. protective casings; 19. sand control packer, 20. production wellbores, 21. screen casing footwear, 22. level pressure discharge ball seat, wherein:
Said control tubing string is provided with well head ball-throwing apparatus 2, throttling joint 6 and ball seat 7; Ball 13 discharges through pitching valve 15; Observing valve 14 is used to observe the time of advent of injecting fluid; Discharge ball 13 at the control point of setting; After ball 13 arrived ball seat 7, throttling joint 6 produced metering function, and well head obtains the pressure indication; Implement fluid injection rate control accurately; Level pressure discharges ball seat 22 and is used for fixed quantity injection control, and it is after pressure reaches setting value that said level pressure discharges ball seat 22, and the ball quilt is the ball seat of release automatically.
Said control tubing string is provided with the packer 10 that is used to fix a point to inject control, the joints 8 that is used for big flow circulation and injects.
In operating process, pay special attention to set the appropriate control point according to the purpose of injecting fluid and requirement.
In sum,, just can overcome the deviation of injection rate, avoid causing operation failure and great economic loss through this control tubing string.
The above; Be merely the preferable specific embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain of claims.
Claims (3)
1. a fluid quantitative injects the control tubing string, it is characterized in that said control tubing string comprises the ball seat and the throttling joint of well head ball-throwing apparatus, down-hole, wherein:
Said throttling joint is installed on the top of ball seat.
2. fluid quantitative as claimed in claim 1 injects the control tubing string; It is characterized in that; Said fluid quantitative injects the control point pitching of control tubing string through setting; Ball is after fluid arrives ball seat, and the throttling joint is had an effect and made well intake pressure produce the rising variable signal, realizes fluid injection rate control accurately according to said signal.
3. fluid quantitative as claimed in claim 1 injects the control tubing string, it is characterized in that, the top of said throttling joint is provided with a plurality of level pressure and discharges ball seat, injects control to realize repeatedly fluid quantitative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203243562U CN202215200U (en) | 2011-08-31 | 2011-08-31 | Control tubular column for liquid quantitative injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203243562U CN202215200U (en) | 2011-08-31 | 2011-08-31 | Control tubular column for liquid quantitative injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202215200U true CN202215200U (en) | 2012-05-09 |
Family
ID=46014460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203243562U Expired - Fee Related CN202215200U (en) | 2011-08-31 | 2011-08-31 | Control tubular column for liquid quantitative injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202215200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758598A (en) * | 2012-08-03 | 2012-10-31 | 中国海洋石油总公司 | Integrated pipe column for accurate quantitative injection and seal examination and seal examination method thereof |
-
2011
- 2011-08-31 CN CN2011203243562U patent/CN202215200U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758598A (en) * | 2012-08-03 | 2012-10-31 | 中国海洋石油总公司 | Integrated pipe column for accurate quantitative injection and seal examination and seal examination method thereof |
| CN102758598B (en) * | 2012-08-03 | 2015-04-22 | 中国海洋石油总公司 | Integrated pipe column for accurate quantitative injection and seal examination and seal examination method thereof |
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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: 20120509 Termination date: 20160831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |