CN203515476U - Double-acting oil tube switch - Google Patents
Double-acting oil tube switch Download PDFInfo
- Publication number
- CN203515476U CN203515476U CN201320676577.5U CN201320676577U CN203515476U CN 203515476 U CN203515476 U CN 203515476U CN 201320676577 U CN201320676577 U CN 201320676577U CN 203515476 U CN203515476 U CN 203515476U
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- Prior art keywords
- piston
- double
- oil
- connector
- seating nipple
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- Expired - Fee Related
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Abstract
The utility model discloses a double-acting oil tube switch. The problem that blowout cannot be prevented in a construction process of tripping a tubular column in an oil well is solved. The double-acting oil tube switch specifically comprises an upper joint, a valve cover, a valve ball, a valve seat, a lateral joint, a working barrel, a piston, a supporting seat, a connector and a lower joint; when the double-acting oil tube switch descends in a well, a lateral liquid inlet hole of the lateral joint is sealed by upper and lower sealing rings in the piston, and the oil tube switch is in a closed and blowout-preventing state; during well completion, a rod string strikes the valve cover to drive the lateral joint and the connector to shear off a double-head shear pin so as to descend, and the lateral liquid inlet hole of the lateral joint downwards moves to the inside of space of the working barrel, and an oil flow passage is formed; and during construction in the next time, a piston of an oil-well pump is lifted out of an oil tube of a pump cylinder and is pressed, the piston shears off the shear pin to move downwards so as to seal the lateral liquid inlet hole of the lateral joint under the action of hydraulic pressure, and the oil flow passage is closed. The double-acting oil tube switch has the blowout preventing function in the construction process of tripping the tubular column in the oil well.
Description
Technical field
The utility model relates to rod-pumped well and plays the fuel line cock using in lower tubular column work progress.
Background technology
At present, blowout prevention problem in lower tubular column work progress is played in order to solve oil well in oil field, prevent that well inner high voltage liquid from overflowing in oil pipe, applied multiple fuel line cock, but the blowout prevention problem in this lower tubular column work progress of the solution that these fuel line cocks can only be single, but after construction, tubing string oil flow channel opening action is unreliable, does not sometimes open, and cannot solve blowout prevention problem in next lift pipe string work progress.
Summary of the invention
The purpose of this utility model is to provide a kind of fuel line cock, solves oil well and plays the blowout prevention problem in lower tubular column work progress.
For achieving the above object, the technical solution adopted in the utility model is: a kind of double acting fuel line cock, comprise top connection, valve cover, valve ball, valve seat, side direction joint, seating nipple, piston, supporting seat, connector and lower contact, wherein, valve ball, valve seat are contained in valve cover, and the lower end of valve cover is threaded with the upper end of side direction joint; Supporting seat, jump ring are sleeved on connector, and double end shear pin is arranged in the screwed hole of supporting seat and connector, and the upper end of connector is threaded with the lower end of side direction joint; Sealing ring is installed in the seal groove of piston, and snap ring is arranged in the annular groove of piston, and piston packs in seating nipple from top, and loads onto shear pin, and top connection is threaded in seating nipple top; Valve cover, side direction joint, connector pack in seating nipple from seating nipple bottom after connecting, and by supporting seat, are stuck in seating nipple step place, and the lower end of seating nipple is threaded with the upper port of lower contact, and uses pin to fix simultaneously.
Beneficial effect: this fuel line cock is arranged on oil well pump bottom on flow string and replaces its standing valve, while going into the well, this fuel line cock is in closed condition blowout prevention, during completion, with rod string, clash into valve cover and open this fuel line cock, form oil flow channel assurance oil well and normally produce; When construction next time, proposes oil pump piston to suppress in pump barrel oil pipe, thus descent of piston cut off shear pin and close oil flow channel and carry out blowout prevention, so this double acting fuel line cock all has blowout prevention function in playing lower tubular column work progress.
Accompanying drawing explanation
Fig. 1 is the utility model double acting fuel line cock structural representation in closed condition while going into the well.
Fig. 2 is the utility model double acting fuel line cock structural representation in open mode while going into the well.
Fig. 3 is the structural representation of the utility model double acting fuel line cock while being again closed in down-hole.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1: a kind of double acting fuel line cock, comprise top connection 1, valve cover 2, valve ball 3, valve seat 4, side direction joint 5, seating nipple 6, piston 7, supporting seat, connector and lower contact 15, wherein, valve ball 3, valve seat 4 are contained in valve cover 2, and the lower end of valve cover 2 is threaded with the upper end of side direction joint 5; Supporting seat 11, jump ring 10 are sleeved on connector 12, and double end shear pin 14 is arranged in the screwed hole of supporting seat 11 and connector 12, and the upper end of connector 12 is threaded with the lower end of side direction joint 5; Sealing ring is installed in the seal groove of piston 7, and snap ring 9 is arranged in the annular groove of piston 7, and piston 7 packs in seating nipple 6 from top, and loads onto shear pin 8, and top connection 1 is threaded in seating nipple 6 tops; Valve cover 2, side direction joint 5, connector 12 pack in seating nipple 6 from seating nipple 6 bottoms after connecting, by supporting seat 11, be stuck in seating nipple 6 step places, the lower end of seating nipple 6 is threaded with the upper port of lower contact 15, and all being threaded tightens and use pin 13 fastening.
Double acting fuel line cock, be arranged on oil well pump bottom on flow string, replace its standing valve, as shown in Figure 1: while going into the well, the side direction inlet opening of side direction joint 5 is sealed by the interior upper-lower seal circle of piston 7, tubing string oil flow channel is blocked, and fuel line cock is in closing blowout prevention state; As shown in Figure 2: during completion, with rod string, clash into that valve cover 2 drives side direction joints 5, connector 12 is cut off double end shear pin 14 descending, jump ring 10 on connector 12 is sat and is stuck in the unidirectional Ka Yanei of supporting seat 11, the side direction inlet opening of side direction joint 5 is moved down in seating nipple 6 spaces, form oil flow channel assurance oil well and normally produce; Next time is when construct, oil pump piston is proposed to suppress in pump barrel oil pipe, as shown in Figure 3: piston 7 is cut off shear pin and is about to the side direction inlet opening sealing of side direction joint 5 for 8 times under hydraulic action, close oil flow channel, at this moment, the snap ring 9 on piston 7 is sat and is stuck in the unidirectional Ka Yanei of seating nipple 6, thereby guarantee that this fuel line cock is in closed condition, reach lift pipe string process blowout prevention object, by above explanation, this fuel line cock can solve oil well and play blowout prevention problem in lower tubular column work progress.
Claims (1)
1. a double acting fuel line cock, comprise top connection, valve cover, valve ball, valve seat, side direction joint, seating nipple, piston, supporting seat, connector and lower contact, it is characterized in that: described valve ball, valve seat are contained in valve cover, the lower end of valve cover is threaded with the upper end of side direction joint; Supporting seat, jump ring are sleeved on connector, and double end shear pin is arranged in the screwed hole of supporting seat and connector, and the upper end of connector is threaded with the lower end of side direction joint; Sealing ring is installed in the seal groove of piston, and snap ring is arranged in the annular groove of piston, and piston packs in seating nipple from top, and loads onto shear pin, and top connection is threaded in seating nipple top; Valve cover, side direction joint, connector pack in seating nipple from seating nipple bottom after connecting, and by supporting seat, are stuck in seating nipple step place, and the lower end of seating nipple is threaded with the upper port of lower contact, and uses pin to fix simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676577.5U CN203515476U (en) | 2013-10-30 | 2013-10-30 | Double-acting oil tube switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676577.5U CN203515476U (en) | 2013-10-30 | 2013-10-30 | Double-acting oil tube switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515476U true CN203515476U (en) | 2014-04-02 |
Family
ID=50374423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320676577.5U Expired - Fee Related CN203515476U (en) | 2013-10-30 | 2013-10-30 | Double-acting oil tube switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515476U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360382A (en) * | 2020-12-10 | 2021-02-12 | 辽宁新华仪器有限公司 | Well repeatable blowout prevention tool |
-
2013
- 2013-10-30 CN CN201320676577.5U patent/CN203515476U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360382A (en) * | 2020-12-10 | 2021-02-12 | 辽宁新华仪器有限公司 | Well repeatable blowout prevention tool |
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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: 20140402 Termination date: 20171030 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |