CN201184171Y - Bias-wearing-proof pumping unit - Google Patents
Bias-wearing-proof pumping unit Download PDFInfo
- Publication number
- CN201184171Y CN201184171Y CNU2008200094846U CN200820009484U CN201184171Y CN 201184171 Y CN201184171 Y CN 201184171Y CN U2008200094846 U CNU2008200094846 U CN U2008200094846U CN 200820009484 U CN200820009484 U CN 200820009484U CN 201184171 Y CN201184171 Y CN 201184171Y
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- China
- Prior art keywords
- oil
- hollow
- pumping device
- oil pipe
- rod
- 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 discloses an oil pumping device with the function of eccentric wear prevention. The oil pumping device is composed of an oil pipe, and a hollow sucker rod, a communicating connector, a plunger piston body, etc. which are sequentially connected in the oil pipe from top to bottom; the lower end of the hollow sucker rod is connected with the plunger piston body through the communicating connector; the solid sucker rod and the oil pipe form an annular space full of a lubricating fluid, thereby completely separating the well fluid from the lubricating fluid, and overcoming the influence on the normal work caused by the gas in the well fluid of the prior art. The oil pumping device has the advantages that an independent lubricating system is adopted to completely separate the well fluid from the lubricating fluid, and the influence of the gas in the well fluid is eliminated at the same time, thereby facilitating the on-site maintenance for workers, and prolonging the service life of the system.
Description
Technical field
The utility model relates to a kind of oil rig, relates in particular to the oil rig in a kind of oil field machinery oil.
Background technology
In sucker-rod pumping system, sucker rod and oil pipe all are to be in contact with one another and relative motion, therefore occur wear problems between sucker rod and the oil pipe inevitably, make the lost of life of sucker rod and oil pipe, and shorten the production cycle of oil well.In order to overcome above-mentioned problem, occurred utilizing hollow rod to substitute the oil rig of solid sucker rod, in described oil rig, hollow rod not only works to connect transferring power, its endoporus is also as the flow channel of fluid, injects lubrication oil in the annular space between its outer wall and the oil pipe or makes annular space be full of crude oil to reduce or to avoid wearing and tearing between hollow rod and the oil pipe water-oil separating by sedimentation theory.But also there is following shortcoming in this device: isolated gas accumulation makes polished rod can not get lubricating at the top of annular space in the well liquid; Also increased the sealing load of polished rod sealer simultaneously, sealing performance descends, and the crude oil leakage often occurs, has increased operator's labour intensity, has polluted environment.
The utility model content
The technical problems to be solved in the utility model be to provide a kind of simple in structure, cost is low, can alleviate the eccentric wear prevention pumping device of rod and tube partial-wear.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the utility model eccentric wear prevention pumping device comprises hollow polished rod, polished rod sealer, fuel-displaced flexible pipe, oil pipe, oil pumping pump barrel, is communicated with joint, plunger body, connect successively by fuel-displaced flexible pipe, hollow polished rod, hollow rod, connection joint and plunger body from top to bottom, described connection joint links to each other with hollow rod with plunger body respectively by screw thread, and there is fluid course the centre.
There is an oil filler point that links to each other with oil pipe described polished rod sealer below.
Compared with prior art, the utlity model has following advantage: the lubricant medium between hollow rod and the oil pipe is no longer by separating in the well liquid but injected by ground, so lubricant effect is better; Can not isolate gas again in the lubricating fluid, in the normal productive process, polished rod sealer no longer bears sealing load, and the poorly sealed problem of polished rod sealer is solved in the prior art, this technology is compared cost not to be increased with original technology, but result of use is significantly improved.
Description of drawings
Fig. 1 is the generalized section of the utility model oil rig.
The specific embodiment
Please refer to shown in Figure 1, the utility model eccentric wear prevention pumping device by fuel-displaced flexible pipe 1, hollow polished rod 2, wellhead sealing device 3, oil filler point 4, oil pipe 5, hollow rod 6, be communicated with joint 7, plunger body 8 and oil pumping pump barrel 9 and constitute.
Described fuel-displaced flexible pipe 1 is connected successively with hollow polished rod 2, hollow rod 6, connection joint 7 and plunger body 8 top-down orders.
Form an airtight annular space between described hollow rod 6 and the oil pipe 5, during operation, plunger body 8 is proposed oil pumping pump barrel 9, inject moderate lubrication oil, then plunger body 8 is put into oil pumping pump barrel 9 and promptly finished oiling work by oil filler point 4.During upstroke: oil-well pump oil inlet valve is opened, and well liquid enters in the pump; During down stroke: well liquid enters the ground petroleum pipeline by plunger body 8 through hollow rod 6, hollow polished rod 2, fuel-displaced flexible pipe 1, finishes a working cycles.Because well liquid and lubrication oil are isolated fully, gas, sand grains and water contained in the well liquid can't mix with lubrication oil, have fully guaranteed the lubricated environment between hollow stem and the oil pipe, and the purpose of this utility model is achieved.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (2)
1. eccentric wear prevention pumping device, comprise hollow polished rod, polished rod sealer, fuel-displaced flexible pipe, oil pipe, oil pumping pump barrel, be communicated with joint, plunger body, connect successively by fuel-displaced flexible pipe, hollow polished rod, hollow rod, connection joint and plunger body from top to bottom, it is characterized in that: described connection joint links to each other with hollow rod with plunger body respectively by screw thread, and there is fluid course the centre.
2. eccentric wear prevention pumping device as claimed in claim 1 is characterized in that: there is an oil filler point that links to each other with oil pipe described polished rod sealer below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200094846U CN201184171Y (en) | 2008-04-25 | 2008-04-25 | Bias-wearing-proof pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200094846U CN201184171Y (en) | 2008-04-25 | 2008-04-25 | Bias-wearing-proof pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201184171Y true CN201184171Y (en) | 2009-01-21 |
Family
ID=40271911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200094846U Expired - Fee Related CN201184171Y (en) | 2008-04-25 | 2008-04-25 | Bias-wearing-proof pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201184171Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425396A (en) * | 2011-11-16 | 2012-04-25 | 中国石油化工股份有限公司胜利油田分公司清河采油厂 | Sucker-rod pump oil extraction system for oil well |
| CN103726797A (en) * | 2012-10-15 | 2014-04-16 | 陈继军 | Direct-transmission type oil pumping unit bottom connector and oil pumping device using bottom connector |
| CN111021999A (en) * | 2020-03-11 | 2020-04-17 | 东营市海天石油科技有限责任公司 | Liquid drainage and gas production integrated pipe column |
-
2008
- 2008-04-25 CN CNU2008200094846U patent/CN201184171Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425396A (en) * | 2011-11-16 | 2012-04-25 | 中国石油化工股份有限公司胜利油田分公司清河采油厂 | Sucker-rod pump oil extraction system for oil well |
| CN103726797A (en) * | 2012-10-15 | 2014-04-16 | 陈继军 | Direct-transmission type oil pumping unit bottom connector and oil pumping device using bottom connector |
| CN111021999A (en) * | 2020-03-11 | 2020-04-17 | 东营市海天石油科技有限责任公司 | Liquid drainage and gas production integrated pipe column |
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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: 20090121 Termination date: 20100425 |