CN201874510U - High-pressure resistant sucker-rod blowout preventer - Google Patents
High-pressure resistant sucker-rod blowout preventer Download PDFInfo
- Publication number
- CN201874510U CN201874510U CN2010206595018U CN201020659501U CN201874510U CN 201874510 U CN201874510 U CN 201874510U CN 2010206595018 U CN2010206595018 U CN 2010206595018U CN 201020659501 U CN201020659501 U CN 201020659501U CN 201874510 U CN201874510 U CN 201874510U
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- CN
- China
- Prior art keywords
- valve
- sucker
- blowout preventer
- sucker rod
- valve seat
- 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 utility model provides a high-pressure resistant sucker-rod blowout preventer, which comprises a sucker-rod blowout preventer and a compacting joint; and the compacting joint is connected with the lower opening of a main path of the sucker-rod blowout preventer, and a cock valve is installed on a bypath of the compacting joint. The cock valve comprises a valve body, an upper valve seat, a lower valve seat, a valve ball and a cock; the upper valve seat and the lower valve seat are arranged in the inner cavity of the valve body, the valve ball is placed between the upper valve seat and the lower valve seat, and the lower end of the cock is inserted in a groove of the valve ball; and the upper valve seat and the lower valve seat are respectively positioned through a step surface and a positioning ring of the inner cavity of the valve body. In the utility model, because the cock valve is additionally arranged in a traditional sucker-rod blowout preventer, the structure of the sucker-rod blowout preventer is more reasonable, the integral sealing and high-pressure resistant actions for a sucker rod are markedly enhanced, the normal working pressure can reach 35MPa, the phenomena that the sucker rod upwards runs, falls into the bottom of a well and leaks when the pressure in the well is abnormally increased are effectively prevented, the safety and the reliability of the sucker-rod blowout preventer are improved, the sucker-rod blowout preventer is convenient to operate, and the labor and the time are saved.
Description
Technical field
The utility model belongs to the petroleum machinery technical field, specifically, relates to a kind of high pressure resistant sucker rod preventer.
Background technology
In the operation and well workover process of oil well; tripping out through regular meeting of sucker rod produces the phenomenon that well kick overflow, sucker rod are scurried out and hurted sb.'s feelings; even contingency such as blowout takes place; for guaranteeing the safety of constructor and equipment; usually adopt the sucker rod preventer, and be equipped with pressure-relief valve to be used for the release discharging of borehole pressure when too high.The pressure-relief valve that can now adopt is generally manual formula common valve, though its volume is little, in light weight, service pressure has only about 7Mpa, and the completely open and close number of turns is more than 5 circles, it is very inconvenient to operate when running into emergency situations, wastes time and energy, and exists bigger potential safety hazard.Although market, oil field improved sucker rod preventer also occurred to adapt to the shaft mouth operation of high pressure at present, but all improvement are all dwindled with reference to wellhead blowout preventor and are processed, all more than 50kg, volume is big for weight, exists still that switch is wasted time and energy, unhandy problem.
The utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of rational in infrastructure, easy to operate, high pressure resistant, safe and reliable high pressure resistant sucker rod preventer.
The technical scheme that its technical problem that solves the utility model adopts is: comprise sucker rod preventer and pressed joint; Described pressed joint is connected with the main latus rectum end opening of sucker rod preventer, it is characterized in that: on the bypass of above-mentioned pressed joint plug valve is installed.
Above-mentioned sucker rod preventer is a single disc sucker rod preventer.
Above-mentioned plug valve comprises valve body, upper valve base, lower valve base, valve ball and cock; Upper valve base and lower valve base are arranged in the inner chamber of valve body, and valve ball places between upper valve base and the lower valve base, and the lower end of cock is inserted in the groove of valve ball; Upper valve base and lower valve base are located by the step surface and the centring ring of body cavity respectively.
The beneficial effects of the utility model are: owing to set up plug valve in existing sucker rod preventer, thereby its structure is more reasonable, sucker rod integral sealing and high pressure resistant effect are significantly strengthened, service pressure can reach 35Mpa, prevented effectively sucker rod when borehole pressure increases unusually on scurry, fall into the generation of shaft bottom and leakage phenomenon, improved the security reliability of sucker rod preventer, and easy to operate, laborsaving saving time.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Among the figure: 1 is that housing, 2 is that flashboard, 3 is that lock shaft, 4 is that side door, 5 is that joint ring, 6 is that thrust ball bearing, 7 is to lock leading screw, 8 to be hole back-up ring for lower valve base, 16 for centring ring, 17 for valve ball, 15 for cock, 14 for upper valve base, 13 for valve body, 12 for pressed joint, 11 for operating grip, 10 for gland, 9.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
High pressure resistant sucker rod preventer described in the utility model based on existing single disc sucker rod preventer, has been set up plug valve.As shown in Figure 1, the utility model comprises single disc sucker rod preventer, pressed joint 10 and plug valve.Described single disc sucker rod preventer comprises housing 1, flashboard 2, lock shaft 3, side door 4, locking leading screw 7 and gland 8; Be provided with to the main latus rectum bilateral symmetry of housing 1 the flashboard die cavity, two flashboards 2 are sub-packed in the above-mentioned two flashboard die cavities; In the outside of flashboard die cavity side door 4 and gland 8 are housed successively; The inner of lock shaft 3 links to each other with flashboard 2, and the outer end of lock shaft 3 links to each other by screw thread the inner with locking leading screw 7, and the outer end of locking leading screw 7 is passed gland 8 and operating grip 9 is housed; On the locking leading screw 7 between gland 8 and the lock shaft 3, be provided with the protrusion step, be respectively equipped with thrust ball bearing 6, joint ring 5 and thrust ball bearing 6 in the inside and outside both sides of this protrusion step.Described pressed joint 10 is connected with the main latus rectum end opening of housing 1 by screw thread.On the bypass of above-mentioned pressed joint 10, plug valve is installed.Described bypass valve comprises valve body 11, upper valve base 12, lower valve base 15, valve ball 14 and cock 13; Upper valve base 12 and lower valve base 15 are arranged in the inner chamber of valve body 11, and valve ball 14 places between upper valve base 12 and the lower valve base 15, and the lower end of cock 13 is inserted in the groove of valve ball 14; Upper valve base 12 and lower valve base 15 are located with back-up ring 17 by the step surface of valve body 11 inner chambers and combined type centring ring 16, hole respectively.
During use, at first the utility model is installed on the well head of oil well.Trip out in the process carrying out sucker rod, flashboard 2 is in released state.Phenomenon such as push up on well kick overflow, the sucker rod when finding to have, may produce blowout when unexpected, rapidly rotation lock leading screw 7, make the main latus rectum central motion of two flashboards 2 to housing 1, hold sucker rod tightly; In that borehole pressure is excessive when needing release, then cock 13 is rotated 90 °, can carry out the release operation.
Claims (3)
1. a high pressure resistant sucker rod preventer comprises sucker rod preventer and pressed joint; Described pressed joint is connected with the main latus rectum end opening of sucker rod preventer, it is characterized in that: on the bypass of above-mentioned pressed joint plug valve is installed.
2. a kind of high pressure resistant sucker rod preventer according to claim 1 is characterized in that: above-mentioned sucker rod preventer is a single disc sucker rod preventer.
3. a kind of high pressure resistant sucker rod preventer according to claim 1, it is characterized in that: above-mentioned plug valve comprises valve body, upper valve base, lower valve base, valve ball and cock; Upper valve base and lower valve base are arranged in the inner chamber of valve body, and valve ball places between upper valve base and the lower valve base, and the lower end of cock is inserted in the groove of valve ball; Upper valve base and lower valve base are located by the step surface and the centring ring of body cavity respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206595018U CN201874510U (en) | 2010-12-03 | 2010-12-03 | High-pressure resistant sucker-rod blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206595018U CN201874510U (en) | 2010-12-03 | 2010-12-03 | High-pressure resistant sucker-rod blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874510U true CN201874510U (en) | 2011-06-22 |
Family
ID=44162433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206595018U Expired - Fee Related CN201874510U (en) | 2010-12-03 | 2010-12-03 | High-pressure resistant sucker-rod blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874510U (en) |
Cited By (2)
| 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 |
| CN105257237A (en) * | 2015-10-30 | 2016-01-20 | 盐城市东荣石油机械有限公司 | Controllable pressure-type sucker rod blowout preventer |
-
2010
- 2010-12-03 CN CN2010206595018U patent/CN201874510U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN105257237A (en) * | 2015-10-30 | 2016-01-20 | 盐城市东荣石油机械有限公司 | Controllable pressure-type sucker rod blowout preventer |
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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: 20110622 Termination date: 20131203 |