CN201574718U - Blowout preventer at top end of oil pumping rod - Google Patents
Blowout preventer at top end of oil pumping rod Download PDFInfo
- Publication number
- CN201574718U CN201574718U CN2009201728576U CN200920172857U CN201574718U CN 201574718 U CN201574718 U CN 201574718U CN 2009201728576 U CN2009201728576 U CN 2009201728576U CN 200920172857 U CN200920172857 U CN 200920172857U CN 201574718 U CN201574718 U CN 201574718U
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- China
- Prior art keywords
- hanger
- pipe
- well
- sucker rod
- thread
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- Expired - Fee Related
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Abstract
The utility model relates to a blowout preventer at the top end of an oil pumping rod, which is applied in the process of oil production, well repairing and well control of an oil field. The blowout preventer mainly comprises a three-way joint, a gate, a blocking pipe, a blocking hanger and a jack screw, wherein the end parts of two straight through pipes and a vertical pipe of the three-way joint are provided with threads; the end parts of the vertical pipe is connected with the gate by the threads; the end part of one straight through pipe is connected with the blocking pipe by the threads; the blocking hanger is arranged in the blocking pipe and positioned at the end part of the straight through pipe; and the blocking hanger is cylindrical, and the lower end of the blocking hanger is provided with connecting threads of the oil pumping rod. The blowout preventer has the effects of: being capable of restraining well kick and blowout of an oil well in the process of well repairing, having high bearing pressure, being capable of circularly restraining well killing fluid in the process of the well kick and the blowout of the oil well and carrying out effective well killing. In addition, the blowout preventer can avoid from polluting the environment and has long service life.
Description
Technical field
The utility model relates to oil recovery well workover technology field, oil field, and particularly a kind of oil well well control device is a kind of preventer that is connected oil pipe top and sucker rod top.
Background technology
In the oilfield downhole operation construction, perform the key that the oil well blowout prevention is a construction safety.In removing oil pipe, use wellhead blowout preventor can control blowout, and in playing the lower sucker rod process if run into well kick, blowout, adopt polished rod, rubber gate and blowout prevention gate etc. to shunt in a well by becoming the snapping head, also can suppress well kick, blowout.Adopt this inhibition well kick, blowout that following shortcoming is arranged:
Operating process is more loaded down with trivial details, and shut-in well speed is slower.
Because rubber gate and packing box bearing capacity are limited, can not bear high pressure.
The monolateral flashboard of conventional preventer stretches out and excessively can cause seal failure.
Conventional preventer need be changed glue core and flashboard assembly, complicated operation when using the different size sucker rod.
Can not effectively realize kill-job, potential safety hazard is big.
The utility model content
The purpose of this utility model is: a kind of sucker rod top preventer is provided, can suppresses oil well well kick, blowout in the well workover process, bear the pressure height, the well killing fluid that can circulate in the process that suppresses oil well well kick, blowout carries out effective kill-job.Overcome prior art shut-in well speed slow, can not bear high pressure, deficiency that potential safety hazard is big.
The technical solution adopted in the utility model is: sucker rod top preventer, mainly by threeway, gate, shutoff pipe, stop up hanger and jackscrew is formed, in two the straight pipe ends and the vertical tube end of threeway screw thread is arranged.It is characterized in that: connect gate in the vertical tube end thread.Connect the shutoff pipe a straight pipe end thread.The obstruction hanger is arranged in the shutoff pipe, stop up hanger and be sitting in the straight pipe end.Stopping up hanger is the cylinder bodily form, in the lower end of stopping up hanger the sucker rod connecting thread is arranged.
On the described obstruction hangar wall type conical bench is arranged, there is tapered slope at open-ended place at straight pipe, and the type conical bench of stopping up hanger is sitting on the tapered slope of straight pipe end.Connect rod string on the lower end screw thread that stops up hanger, the weight of rod string is applied on the tapered slope of stopping up hanger and straight pipe end, can seal well kick and blowout.
The lower end connecting thread of described obstruction hanger is an external screw thread, and the upper end connecting thread of described obstruction hanger is an internal thread.
For the fixing hanger that stops up, on the shutoff pipe, screw is arranged, be fixed with jackscrew in the screw, can block the obstruction hanger in the jackscrew screw-in shutoff pipe and move up.
Rotate jackscrew for convenience, be fixed with bearing pin, be connected with a spanner at the two ends of bearing pin in the jackscrew outer end.The end of spanner is fixed with two blocks of parallel-plates, and is porose on two blocks of parallel-plates, and bearing pin 7 is connected in two holes on the parallel-plate.
For easy for installation, the upper end of shutoff pipe is a bell mouth shape.
The using method of sucker rod top preventer
Consult Fig. 1.In the well workover process, when sending out back well kick or blowout, the shutoff pipe 3 that hanger 4 is connected the top of rod string and puts into this device will be stopped up, unclamp rod elevator, stopping up hanger 4 is sitting on the conical surface of threeway straight pipe end, screw jackscrew 5 and fix obstruction hanger 4, can realize shut-in well.Then, connect relief line from blowout prevention gate 2, the kill-job that can circulate prevents well kick or blowout.
The beneficial effects of the utility model: sucker rod top preventer, adopt the conical surface that stops up hanger and threeway straight pipe end to set, can in the well workover process, suppress oil well well kick, blowout, bear the pressure height, the well killing fluid that circulates in the process that suppresses oil well well kick, blowout carries out effective kill-job.
1, sucker rod top preventer is not unloaded the restriction (no matter being sucker rod pin thread or box cupling) of screw thread state, can realize two-way use at screw thread state hanger.
2, it is fast to set speed, and the kill-job passage is big, is not subjected to the sucker rod diameter restrictions.
3, there is not the rubber parts sealing in whole device, and long service life can be used for the construction of various complex hole condition.
4, processing is simple, the maintaining cost is low, can satisfy the sucker rod blowout prevention of plurality of specifications.
5, workover fluid flows out at the gate place from the side when normal the trip-out, avoids contaminated environment.
6, gentlier meet when spray removing sucker rod load, can prevent sucker rod ejection well head by jackscrew control.
7, bearing capacity height, good seal performance.
Description of drawings
Fig. 1 is the utility model sucker rod top preventer structural profile schematic diagram.
Among the figure, 1. threeway, 2. gate, 3. shutoff pipe, 4. obstruction hanger, 5. jackscrew, 6. spanner, 7. pivot pin.
The specific embodiment
Embodiment 1: with a sucker rod top preventer is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model sucker rod top preventer mainly is made up of a threeway 1, gate 2, shutoff pipe 3, an obstruction hanger 4 and two jackscrews 5.There is the API tubing round thread two straight pipe ends and vertical tube end in threeway 1.Connect gate 2 in the vertical tube end thread.
Connect shutoff pipe 3 a straight pipe end thread.The upper end of shutoff pipe 3 is a bell mouth shape.The hanger 4 of obstruction is arranged in shutoff pipe 3.Stopping up hanger 4 be the cylinder bodily form, the lower end of stopping up hanger 4 with under the sucker rod connecting thread is arranged.Stopping up hanger 4 outer walls respectively has a type conical bench up and down, and there is tapered slope at open-ended place at straight pipe, and the gradient of type conical bench is identical with the gradient of tapered slope.The type conical bench of stopping up hanger 4 is sitting on the tapered slope of straight pipe end.At the lower end connecting thread that stops up hanger 4 is external screw thread, and the upper end connecting thread of described obstruction hanger 4 is internal threads.
Two screws of symmetry are arranged on shutoff pipe 3, be fixed with a jackscrew 5 in the screw.Be fixed with a bearing pin 7 in jackscrew 5 outer ends, be connected with a cylindrical spanner 6 at the two ends of bearing pin 7.The end of spanner 6 is fixed with two blocks of parallel-plates, and is porose on two blocks of parallel-plates, and bearing pin 7 is connected in two holes on the parallel-plate.
Claims (6)
1. sucker rod top preventer, mainly form by threeway (1), gate (2), shutoff pipe (3), obstruction hanger (4) and jackscrew (5), there is screw thread two straight pipe ends and vertical tube end in threeway (1), it is characterized in that: connect gate (2) in the vertical tube end thread, connect shutoff pipe (3) a straight pipe end thread, obstruction hanger (4) is arranged in shutoff pipe (3), stop up hanger (4) and be sitting in the straight pipe end, stopping up hanger (4) is the cylinder bodily form, in the lower end of stopping up hanger (4) the sucker rod connecting thread is arranged.
2. sucker rod according to claim 1 top preventer is characterized in that: on described obstruction hanger (4) outer wall type conical bench is arranged, there is tapered slope at open-ended place at straight pipe.
3. sucker rod according to claim 1 top preventer is characterized in that: the lower end connecting thread of described obstruction hanger (4) is an external screw thread, and the upper end connecting thread of described obstruction hanger (4) is an internal thread.
4. sucker rod according to claim 1 top preventer is characterized in that: on shutoff pipe (3) screw is arranged, be fixed with jackscrew (5) in the screw.
5. sucker rod according to claim 4 top preventer, it is characterized in that: be fixed with bearing pin (7) in jackscrew (5) outer end, be connected with a spanner (6) at the two ends of bearing pin (7), the end of spanner (6) is fixed with two blocks of parallel-plates, porose on two blocks of parallel-plates, bearing pin (7) is connected in two holes on the parallel-plate.
6. according to claim 1,2,3,4 or 5 described sucker rod top preventers, it is characterized in that: the upper end of shutoff pipe (3) is a bell mouth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201728576U CN201574718U (en) | 2009-08-14 | 2009-08-14 | Blowout preventer at top end of oil pumping rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201728576U CN201574718U (en) | 2009-08-14 | 2009-08-14 | Blowout preventer at top end of oil pumping rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201574718U true CN201574718U (en) | 2010-09-08 |
Family
ID=42694594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201728576U Expired - Fee Related CN201574718U (en) | 2009-08-14 | 2009-08-14 | Blowout preventer at top end of oil pumping rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201574718U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767345A (en) * | 2012-07-25 | 2012-11-07 | 胜利油田东胜精攻石油开发集团股份有限公司 | Multifunctional sucker rod hanging blowout preventer |
| CN107201885A (en) * | 2017-06-16 | 2017-09-26 | 盐城市东荣石油机械有限公司 | A kind of oil pumping polish rod plugging device |
| CN111397671A (en) * | 2020-04-09 | 2020-07-10 | 杜宏宇 | Open type liquid flowmeter for unsteady multiphase flow |
| CN111878028A (en) * | 2020-08-28 | 2020-11-03 | 中国石油天然气集团有限公司 | Inner pipe well cementation wellhead movable sealing device and method |
-
2009
- 2009-08-14 CN CN2009201728576U patent/CN201574718U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767345A (en) * | 2012-07-25 | 2012-11-07 | 胜利油田东胜精攻石油开发集团股份有限公司 | Multifunctional sucker rod hanging blowout preventer |
| CN107201885A (en) * | 2017-06-16 | 2017-09-26 | 盐城市东荣石油机械有限公司 | A kind of oil pumping polish rod plugging device |
| CN111397671A (en) * | 2020-04-09 | 2020-07-10 | 杜宏宇 | Open type liquid flowmeter for unsteady multiphase flow |
| CN111878028A (en) * | 2020-08-28 | 2020-11-03 | 中国石油天然气集团有限公司 | Inner pipe well cementation wellhead movable sealing device and method |
| CN111878028B (en) * | 2020-08-28 | 2022-09-16 | 中国石油天然气集团有限公司 | Inner pipe well cementation wellhead movable sealing device and method |
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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: 20100908 Termination date: 20120814 |