CN2752485Y - Underground antiturning-back device for screw pump - Google Patents
Underground antiturning-back device for screw pump Download PDFInfo
- Publication number
- CN2752485Y CN2752485Y CN 200420063329 CN200420063329U CN2752485Y CN 2752485 Y CN2752485 Y CN 2752485Y CN 200420063329 CN200420063329 CN 200420063329 CN 200420063329 U CN200420063329 U CN 200420063329U CN 2752485 Y CN2752485 Y CN 2752485Y
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- valve body
- lower contact
- upper connection
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Abstract
The utility model belongs to the technical field of mechanical oil production in oil development, particularly to an underground anti-reverse-rotation device for a screw pump well. In order to prevent a pumping rod post from reverse rotation and tripping, the underground anti-reverse-rotation device is developed. The utility model is mainly composed of an upper joint 1, a press cover 2, a supporting pin 3, a spacing ring 4, an upper joint of a valve body 5, a tetrafluorohydrazine cushion 6, a lower joint of the valve body 7, a rubber ring 8, a valve seat 9, a positioning pin bolt 10, a lower joint 11, etc. The utility model is mainly used for screw pump wells in oil field and can effectively prevent the pumping rod post from tripping when the screw pump well is stopped. The utility model has the advantages of assuring the safety of construction personnel, reducing the processing cost simultaneously, etc.
Description
Technical field: the utility model belongs to mechanical oil production technology technical field in the oil development, and the down-hole that belongs to screw bolt well especially is used for anti-reverse mechanism.
Background technique: when ground driving screw pump oil production well is shut down, the fluid power effect that fluid column produces in the tubing string will drive the rotor counter-rotating, drive the rod string counter-rotating and thread off.On the drive unit of ground driving screw pump oil production well, anti-reverse mechanism is installed, can be solved the problem that rod string is threaded off.But,, developed a kind of down-hole anti-reverse mechanism in case when the ground anti-reverse mechanism lost efficacy, thread off and guarantee workmen's personal safety in order to prevent the rod string counter-rotating.
Summary of the invention: the purpose of this utility model is that development can effectively prevent rod string dropout problem, and anti-reverse mechanism under a kind of screw bolt well of assurance workmen safety.
The utility model mainly is made up of parts such as upper connection, gland, supporting pin, limited ring, valve body upper connection, phenyl tetrafluoride pad, valve body lower contact, cushion rubber, valve seat, positioning dowel, lower contacts.
Upper connection wherein of the present utility model and lower contact are linked together by tubing round thread.Be drilled with oily opening around the gland upper surface, be built in upper connection inside.Be drilled with through hole in the middle of the limited ring, be drilled with oily opening all around, limited ring is sitting on the endoporus shoulder of lower contact, the top body of rod of valve body upper connection passes the intermediate throughholes of limited ring, simultaneously be drilled with a through hole on the body of rod, supporting pin and through hole interference fit, the while supporting pin be sitting in limited ring above.Phenyl tetrafluoride pad is enclosed within the valve body lower contact, and the valve body lower contact connects with the valve body upper connection by screw thread.The upper end outer surface of valve seat is with cushion rubber, and the lower end outer surface of valve seat has circular groove.The lower contact upper end is drilled with tapped through hole, and the threaded end of positioning dowel connects with tapped through hole, and the other end injects in the circular groove of valve seat.
Compared with the prior art the utility model has following advantage:
Rod string dropout problem when 1, this device can effectively prevent the screw bolt well shutdown;
2, guarantee workmen's safety, reduced processing cost simultaneously;
3, convenience quick for installation, cost is low, is easy to processing.
Description of drawings: Fig. 1 is a structure diagram of the present utility model.
Embodiment: the utility model mainly is made up of parts such as upper connection 1, gland 2, supporting pin 3, limited ring 4, valve body upper connection 5, phenyl tetrafluoride pad 6, valve body lower contact 7, cushion rubber 8, valve seat 9, positioning dowel 10, lower contacts 11.
Upper connection wherein of the present utility model 1 and lower contact 11 are linked together by tubing round thread.Be drilled with oily opening around gland 2 upper surfaces, be built in upper connection 1 inside.Be drilled with through hole in the middle of the limited ring 4, be drilled with oily opening all around, limited ring 4 is sitting on the endoporus shoulder of lower contact 11, the top body of rod of valve body upper connection 5 passes the intermediate throughholes of limited ring 4, be drilled with a through hole on the body of rod simultaneously, supporting pin 3 and through hole interference fit, simultaneously supporting pin 3 be sitting in limited ring 4 above.Phenyl tetrafluoride pad 6 is enclosed within the valve body lower contact 7, and valve body lower contact 7 connects with valve body upper connection 5 by screw thread.The upper end outer surface of valve seat 9 is with cushion rubber 8, and the lower end outer surface of valve seat 9 has circular groove.Lower contact 11 upper ends are drilled with tapped through hole, and positioning dowel 10 threaded ends connect with tapped through hole, and the other end injects in the circular groove of valve seat 9.
During on-the-spot the use, at first cancel the limiting board on the screw pump stator, anti-reverse mechanism upper connection 1 under the screw bolt well is connected with stator end by oil tube buckle, promptly replaced the stator limiting board.The down-hole anti-reverse mechanism is lowered to oil well with screw pump stator.Before sucker rod was carried over-stroke, with the gland 2 of the anti-reverse drainage device of whole pumping rod and rotor bump down-hole, gland 2 acted on above the valve body upper connection 5, valve body upper connection 5 is descending, supporting pin 3 is severed, and valve body is sitting on the valve seat 9, puies forward the over-stroke completion then and goes into operation.In screw pump when oil pumping,, the liquid under the pump backs down valve body, and the oily opening by limited ring 4 and gland 2 enters in the pump.In case screw bolt well is shut down, whole fluid column is pressed on the valve body in the pit shaft, valve body being pressed on the valve seat 9 tightly, and the fluid column in the whole tubing string is dammed by unidirectional, and the fluid power effect disappears, and rod string can not produce counter-rotating, has avoided the generation of dropout problem.During the operation lift pipe string, trip out sucker rod and rotor earlier, utilize pump truck to suppress then, valve body tightly is pressed on the valve seat 9, and when pressure reached certain value, positioning dowel 10 was cut off, and valve seat 9 is struck off, and pin hole can draining, normally trips out down-hole string then.
Claims (1)
1, anti-reverse mechanism under the screw bolt well is characterized in that: it mainly is made up of upper connection (1), gland (2), supporting pin (3), limited ring (4), valve body upper connection (5), phenyl tetrafluoride pad (6), valve body lower contact (7), cushion rubber (8), valve seat (9), positioning dowel (10), lower contact (11) parts;
Wherein, upper connection (1) is linked together by tubing round thread with lower contact (11), be drilled with oily opening around gland (2) upper surface, be built in upper connection (1) inside, be drilled with through hole in the middle of the limited ring (4), be drilled with oily opening all around, limited ring (4) is sitting on the endoporus shoulder of lower contact (11), the intermediate throughholes that the top body of rod of valve body upper connection (5) passes limited ring (4), be drilled with a through hole on the body of rod simultaneously, supporting pin (3) and through hole interference fit, simultaneously supporting pin (3) be sitting in limited ring (4) above, phenyl tetrafluoride pad (6) is enclosed within the valve body lower contact (7), and valve body lower contact (7) connects with valve body upper connection (5) by screw thread, and the upper end outer surface of valve seat (9) is with cushion rubber (8), the lower end outer surface of valve seat (9) has circular groove, lower contact (11) upper end is drilled with tapped through hole, and the threaded end of positioning dowel (10) connects with tapped through hole, and the other end injects in the circular groove of valve seat (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420063329 CN2752485Y (en) | 2004-08-25 | 2004-08-25 | Underground antiturning-back device for screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420063329 CN2752485Y (en) | 2004-08-25 | 2004-08-25 | Underground antiturning-back device for screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2752485Y true CN2752485Y (en) | 2006-01-18 |
Family
ID=35913894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420063329 Expired - Lifetime CN2752485Y (en) | 2004-08-25 | 2004-08-25 | Underground antiturning-back device for screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2752485Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256219A (en) * | 2013-03-13 | 2013-08-21 | 曹福林 | Helical rotor pump counter-rotating slow-release device for oilfield underground oil extraction |
| CN105121776A (en) * | 2012-10-29 | 2015-12-02 | 利莱森玛电机公司 | Method for emptying an oil well and system for the implementation of said method |
| CN106460484A (en) * | 2013-11-19 | 2017-02-22 | 瑟瑞恩派特石油代理服务有限公司 | Check valve with inertial mass for progressive cavity pumps |
-
2004
- 2004-08-25 CN CN 200420063329 patent/CN2752485Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105121776A (en) * | 2012-10-29 | 2015-12-02 | 利莱森玛电机公司 | Method for emptying an oil well and system for the implementation of said method |
| CN105121776B (en) * | 2012-10-29 | 2018-04-13 | 利莱森玛电机公司 | For emptying the method and system for carrying out the method for oil well |
| CN103256219A (en) * | 2013-03-13 | 2013-08-21 | 曹福林 | Helical rotor pump counter-rotating slow-release device for oilfield underground oil extraction |
| CN106460484A (en) * | 2013-11-19 | 2017-02-22 | 瑟瑞恩派特石油代理服务有限公司 | Check valve with inertial mass for progressive cavity pumps |
| CN106460484B (en) * | 2013-11-19 | 2022-04-26 | 瑟瑞恩派特石油代理服务有限公司 | Check valve with inertial mass for a screw pump |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140825 Granted publication date: 20060118 |