CN201262062Y - Blowout prevention controller in pipe - Google Patents
Blowout prevention controller in pipe Download PDFInfo
- Publication number
- CN201262062Y CN201262062Y CNU2008201362688U CN200820136268U CN201262062Y CN 201262062 Y CN201262062 Y CN 201262062Y CN U2008201362688 U CNU2008201362688 U CN U2008201362688U CN 200820136268 U CN200820136268 U CN 200820136268U CN 201262062 Y CN201262062 Y CN 201262062Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sliding sleeve
- blowout prevention
- prevention controller
- hole
- 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
An in-tubing blowout prevention controller, which mainly solves the problem of blowout or overflow of well fluid from the interior of a tubing string to a wellhead during oil well operation, is characterized in that an upper joint (1) is in threaded connection with a lower joint (3), a stepped hole (8) is formed on the lower joint (2) in the axial direction, a direct flushing well hole (9) is arranged on the side wall of the lower joint (2), a sliding sleeve (3) capable of sliding is arranged in an axial hole of the upper joint (1), a knockout pin (4) is arranged inside the sliding sleeve (3) and has the upper end thereof connected with a link rod (5), a snap ring (6) with reducible diameter is arranged at the upper end of the knockout pin (4) and has a circular arc-shaped outer ring surface, a valve holder (7) is connected with the lower end of the upper joint (1), a valve (10) is hinged with the valve holder (7), a spring for clamping the valve holder (7) and the valve (10) is arranged on the hinge shaft, and the valve (10) is fitted over the lower end of the sliding sleeve (3). The in-tubing blowout prevention controller can prevent the well fluid from blowing out or overflowing from the interior of the tubing string to the wellhead during oil well operation.
Description
Technical field:
The utility model relates to the used downhole tool of operation in the oil recovery field, oil field, especially blowout prevention controller in the pipe.
Background technology:
Along with continually developing of oil field, the adverse circumstances of minimizing of oilbearing stratum reserves and down-hole make downhole tool often go wrong, and must need operation in order to address these problems.Along with the environmental protection dynamics progressively strengthens, underground work is polluted becomes one of main pollution sources, especially when control removes the construction of pipe bar, also solution effectively of this difficult problem of oil spout in the pipe.At present, in the process of oil well operation, owing to be full of well liquid in the oil pipe, under the strata pressure effect, when removing tubing string, cause well liquid ejection or excessive in the tubing string to well head, contaminated environment, so not only cause the very big wasting of resources, and seriously influence workman's operation, be unfavorable for the development in oil field.
The utility model content:
Well liquid is from ejection in the tubing string or overflow to the well head problem of environment pollution caused when solving the oil well operation, the utility model provides blowout prevention controller in a kind of pipe, and the blowout prevention controller has when the oil well operation and prevents that well liquid is from ejection in the tubing string or excessive characteristics to well head in this pipe.
The technical solution of the utility model is: the blowout prevention controller comprises lower contact and top connection in this pipe, top connection is connected with lower contact by screw thread, lower contact axially has step hole, positive well washing hole is arranged on the sidewall, the top connection axial hole is built-in with the sliding sleeve that can slide, sliding sleeve is built-in with push rod, the push rod upper end links to each other with connecting rod, the push rod upper end is provided with the snap ring that diameter can contract and become, the snap ring outer ring surface is a circular arc, and the top connection lower end is connected with valve base, and the valve base upper hinge has valve, the spring that blocks valve base and valve is mutually arranged on the hinge axis, and valve covers the sliding sleeve lower end mutually.
The utlity model has following beneficial effect: blowout prevention controller in this pipe is owing to take such scheme, when ordinary production, sliding sleeve directly docks with the step hole of lower contact, and positive well washing hole is closed by sliding sleeve, oil discharge passage is opened, and can guarantee the requirement of normally recovering the oil.And when operation; because valve resets under the effect of spring and well liquid; bore closure with top connection; oil discharge passage and positive well washing hole are kept apart by valve; thereby can prevent effectively that well liquid from spraying or overflowing in tubing string; so not only economize on resources, and protected environment, guaranteed workman's normal running again.The blowout prevention controller has when the oil well operation and prevents that well liquid is from ejection in the tubing string or overflow to the characteristics of well head in this pipe thus.
Description of drawings:
Accompanying drawing 1 is the utility model structural representation.
1-top connection among the figure, 2-lower contact, 3-sliding sleeve, 4-push rod, 5-connecting rod, 6-snap ring, 7-valve base, 8-step hole, the positive well washing hole of 9-, 10-valve.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, the blowout prevention controller comprises lower contact 2 and top connection 1 in this pipe, top connection 1 is connected with lower contact 2 by screw thread, lower contact 2 axially has step hole 8, positive well washing hole 9 is arranged on the sidewall, top connection 1 axial hole is built-in with the sliding sleeve 3 that can slide, sliding sleeve 3 is built-in with push rod 4, push rod 4 upper ends link to each other with connecting rod 5, and push rod 4 upper ends are provided with the snap ring 6 that diameter can contract and become, and snap ring 6 outer ring surfaces are circular arc, top connection 1 lower end is connected with valve base 7, valve base 7 upper hinges have valve 10, and the spring that blocks valve base 7 and valve 10 is mutually arranged on the hinge axis, and valve 10 covers sliding sleeve 3 lower ends mutually.
Operating principle, the blowout prevention controller was connected on the pump between first and second oil pipes in should managing, and connecting rod 5 upper ends link to each other with sucker rod, and push rod 4 lower ends are connected with piston pulling.After operation is finished, it is descending to drive push rods 4 by sucker rod and connecting rod 5, and in the descending process of push rod 4, the snap ring 6 of push rod 4 upper ends is stuck on sliding sleeve 3 upper surfaces, and it is descending to promote sliding sleeve 3, valve 10 makes valve 10 to the side upset, in 3 step holes 8 in lower contact 2 of sliding sleeve under the effect of sliding sleeve 3, snap ring 6 reduced of push rod 4 upper ends are by sliding sleeve 3, travel in below the oil pipe, oil discharge passage is opened, 9 sealings of positive well washing hole, can normally recover the oil.When the needs operation, it is up to drive push rod 4 by sucker rod and connecting rod 5, in the up process of push rod 4, the snap ring 6 of push rod 4 upper ends is stuck on sliding sleeve 3 lower surfaces, and it is up to promote sliding sleeve 3, until 3 of sliding sleeves in top connection 1 axial hole, snap ring 6 reduced of push rod 4 upper ends are by sliding sleeve 3, travel in tubing string, valve 10 resets on the valve base 7 valve 10 under the effect of spring, and oil discharge passage is closed, positive well washing hole 9 is opened, can normally trip out tubing string, dissolved gas in the tubing string and liquid can be got rid of through positive well washing hole 9 by positive well-flushing.This shows that the blowout prevention controller is when ordinary production in this pipe, oil discharge passage is opened, and can guarantee the requirement of normally recovering the oil.And when operation, because valve 10 resets under the effect of spring, oil discharge passage is closed, thereby can prevent effectively that well liquid from spraying or overflowing in tubing string, and so not only economize on resources, and protected environment, guaranteed workman's normal running again.The blowout prevention controller has when the oil well operation and prevents that well liquid is from ejection in the tubing string or overflow to the characteristics of well head in this pipe thus.
Claims (1)
1, blowout prevention controller in a kind of pipe, comprise lower contact (2) and top connection (1), it is characterized in that: top connection (1) is connected with lower contact (2) by screw thread, lower contact (2) axially has step hole (8), positive well washing hole (9) is arranged on the sidewall, top connection (1) axial hole is built-in with the sliding sleeve (3) that can slide, sliding sleeve (3) is built-in with push rod (4), push rod (4) upper end links to each other with connecting rod (5), push rod (4) upper end is provided with the snap ring (6) that diameter can contract and become, snap ring (6) outer ring surface is a circular arc, top connection (1) lower end is connected with valve base (7), valve base (7) upper hinge has valve (10), and the spring that blocks valve base (7) and valve (10) is mutually arranged on the hinge axis, and valve (10) covers sliding sleeve (3) lower end mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201362688U CN201262062Y (en) | 2008-09-19 | 2008-09-19 | Blowout prevention controller in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201362688U CN201262062Y (en) | 2008-09-19 | 2008-09-19 | Blowout prevention controller in pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262062Y true CN201262062Y (en) | 2009-06-24 |
Family
ID=40808535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201362688U Expired - Fee Related CN201262062Y (en) | 2008-09-19 | 2008-09-19 | Blowout prevention controller in pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262062Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227977A (en) * | 2020-11-10 | 2021-01-15 | 中国石油天然气集团有限公司 | Storage type well logging blowout prevention joint |
-
2008
- 2008-09-19 CN CNU2008201362688U patent/CN201262062Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227977A (en) * | 2020-11-10 | 2021-01-15 | 中国石油天然气集团有限公司 | Storage type well logging blowout prevention joint |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090624 Termination date: 20170919 |