CN201439749U - Wear-prevention oil pump - Google Patents
Wear-prevention oil pump Download PDFInfo
- Publication number
- CN201439749U CN201439749U CN2009201560414U CN200920156041U CN201439749U CN 201439749 U CN201439749 U CN 201439749U CN 2009201560414 U CN2009201560414 U CN 2009201560414U CN 200920156041 U CN200920156041 U CN 200920156041U CN 201439749 U CN201439749 U CN 201439749U
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- China
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- fixed valve
- valve body
- oil
- plunger
- rod
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- Expired - Fee Related
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Abstract
A wear-prevention oil pump comprises a plunger pull rod, a fixed valve body, a fixed valve seat, a pump barrel, a plunger and a travelling valve, wherein the plunger pull rod passes through the inner hole of the fixed valve body, the upper end of the plunger pull rod is in threaded connection with an oil-pumping rod disconnector, and the lower end thereof is in threaded connection with the top of the plunger, the inner hole of the hollow sleeve of the fixed valve body is sealed with the plunger pull rod, the outer sphere ring surface of the semisphere ring part of the fixed valve body is sealed with the fixed valve seat, and the fixed valve body does the limit movement up and down along the plunger pull rod. The utility model has simple structure, is practical and convenient, works reliably, and is applied to the pumping working of various sucker-rod pumps for oil wells; the working load of the wear-prevention oil pump on the oil-pumping rod can change along with the period of upstroke and downstroke, so the oil-pumping rod just bears the alternative bending deformation and stress, and can not be compressed and bent, thereby, the drilling troubles such as the wear and breakage of the oil pumping pipe and the oil-pumping rod and the like can be avoided, the working life of the oil well is prolonged and the cost of the oil extraction is reduced.
Description
Technical field: the utility model relates to a kind of oil field extracting device of oil, especially for the abrasionproof oil well pump of well recovery.
Technical background: at present, the oil well pump that generally uses in the sucker rod pumping engineering of each oil field is conventional type pipe (bar) formula oil well pump both at home and abroad.Because the reasons in structure of conventional type pipe (bar) formula oil well pump, the load situation of rod string is stretching during the pumping unit upstroke, and the load situation of rod string is compression at stress neutral point epimere for stretching, neutral point hypomere during the pumping unit down stroke.The rod string of compressing section is the effect generation strut buckling bending of stress by compression.Therefore mechanical percussion and friction take place in the inwall of rod string and oil pipe often.Thereby cause pumping well that the wearing and tearing and the fracture accident of oil pipe or rod string frequently take place, shorten oil well and be excused from a college course the cycle, increase cost for oil production.
Summary of the invention: for overcoming the deficiency of conventional type pipe (bar) oil well pump tube inner wall and rod string generation percussion and friction in oil pumping process.The utility model recovers the oil for the oil field a kind of abrasionproof oil well pump is provided.This pump can prevent rod string and tube inner wall percussion and friction effectively in the pumping process.
The technological scheme that its technical problem that solves the utility model adopts: the utility model is to realize that with the method that changes oil well pump structural type the rod string force-bearing situation of sucker rod pumping pumping system is tending towards reasonable.The concrete structure of abrasionproof oil well pump: constitute by plunger pull bar 1, fixed valve body 2, fixed valve base 3, pump barrel 4, plunger 5, traveling valve 6.Wherein fixed valve body 2 and fixed valve base 3 are formed standing valve 7.It is characterized in that: plunger pull bar 1 is by the endoporus of fixed valve body 2.The upper end of the plunger pull bar 1 sucker rod connecting-and-unconnecting device that is threaded, the top of lower end thread connecting plunger 5.Fixed valve body 2 tops are that cannulated sleeve, bottom are the hemisphere ring.The cannulated sleeve position endoporus of fixed valve body 2 and 1 sealing of plunger pull bar, the ectosphere anchor ring of the hemisphere ring portion position of fixed valve body 2 and fixed valve base 3 sealings.Fixed valve body 2 can be followed the plunger pull bar 1 upper and lower axial limiting that carries out and be moved.Plunger pull bar 1 drives fixed valve body 2 when up up, is beneficial to standing valve 7 and opens.It is descending that plunger pull bar 1 drives fixed valve body 2 again when descending, is beneficial to standing valve 7 and closes.Standing valve 7 possesses sealing and opens and closes dual functions with passage.Traveling valve 6 has been installed on plunger 5 its tops that are positioned at pump barrel 4.
Essential change has taken place in the load situation of abrasionproof oil well pump rod string in upper and lower stroke cycling process.The stress neutral point of rod string disappears, and does not have the differentiation of upper and lower section of stress neutral point on rod string.The action of gravity of fluid column produces stretching to rod string on the pump on the annular stress surface between plunger pull bar 1 and the rod string.The load situation of rod string is the stretching of the action of gravity of fluid column on rod string deadweight and the pump to the rod string generation during the upper and lower stroke of pumping unit thus.Make its rod string bear the effect of alternation tensile stress all the time, all there is not compressive stress in whole rod string.Rod string only bears tensile buckling, can not bear the influence of bending compression distortion.Therefore the inwall of oil pipe and mechanical percussion and the friction between the rod string have thoroughly been stopped.
Effect intentionally of the present utility model: the utility model is simple in structure, and is practical and convenient, and reliable operation is applicable to all kinds of sucker-rod pump in pumping well swabbing operations.The operating load that the abrasionproof oil well pump in use acts on the rod string changed along with the upper and lower stroke cycle, and rod string just bears alternation tensile buckling and stress.So bending compression can not take place in rod string, thereby the generation that can thoroughly stop down-hole accidents such as the wearing and tearing of pumping well oil pipe and sucker rod and fracture.Prolong oil well repair free period, reduce cost for oil production.
Description of drawings: accompanying drawing is an abrasionproof oil well pump structural drawing:
Plunger pull bar 1, fixed valve body 2, fixed valve base 3, pump barrel 4, plunger 5, traveling valve 6, standing valve 7.
Embodiment: the abrasionproof oil well pump is by plunger pull bar 1, fixed valve body 2, fixed valve base 3, pump barrel 4, plunger 5, traveling valve 6 formations such as grade.Wherein fixed valve body 2 and fixed valve base 3 are formed standing valve 7.
The mining site using method of abrasionproof oil well pump: at first abrasionproof oil well pump and oil pipe are connected and composed oil pump tubular column, the abrasionproof oil well pump with under the oil pump tubular column in the oil well design work position.Again sucker rod is lowered in the tubing string of oil well sucker rod connecting-and-unconnecting device with plunger pull bar 1 upper end from being dynamically connected, has constituted the sucker rod roofbolt.On ground sucker rod is installed on the rope hanger of pumping unit, the abrasionproof oil well pump just can carry out swabbing operation.
The pumping mechanism of abrasionproof oil well pump is equal to the conventional type oil well pump.Up stroke: plunger 5 is up, and fixed valve body 2 up standing valves are opened, and traveling valve 6 cuts out.Liquid is compressed through standing valve 7 and enters oil pipe and be lifted to ground in plunger 5 epicoeles.The stretching that fluid column gravity and deadweight produce on the rod string bearing pump at this moment.Down stroke: plunger 5 is descending, and fixed valve body 2 descending standing valves 7 cut out, and traveling valve 6 is opened.Liquid in the oil well is in traveling valve 6 enters plunger 5 epicoeles.Because the lower end of pump barrel 4 is open architectures.The lower end of plunger 5 is arranged in the following low pressure liquid of well fluid level all the time, and not affording axial resistance when rod string is descending does not have the compressive stress generation.Equally only bear the stretching that the fluid column action of gravity produces rod string on rod string deadweight and the pump.Rod string only bears the alternation tensile stress in the pumping overall process, and no compressive stress so rod string does not bend, has prevented the generation of percussion, wearing and tearing and the fracture accident of rod string and tube inner wall, prolongs oil well repair free period, reduces cost for oil production.
Claims (2)
1. one kind by plunger pull bar (1), fixed valve body (2), fixed valve base (3), pump barrel (4), plunger (5), the abrasionproof oil well pump that traveling valve (6) is formed, it is characterized in that: plunger pull bar (1) is by the endoporus of fixed valve body (2), the upper end of plunger pull bar (1) the sucker rod connecting-and-unconnecting device that is threaded, the top of lower end thread connecting plunger (5), fixed valve body (2) top is cannulated sleeve, the bottom is the hemisphere ring, the cannulated sleeve position endoporus of fixed valve body (2) and plunger pull bar (1) sealing, the ectosphere anchor ring of the hemisphere ring portion position of fixed valve body (2) and fixed valve base (3) sealing, fixed valve body (2) is followed on the plunger pull bar (1), under carry out axial limiting motion.
2. abrasionproof oil well pump according to claim 1, it is characterized in that: fixed valve body (2) and fixed valve base (3) are formed standing valve (7), it is up to drive fixed valve body (2) when plunger pull bar (1) is up, being beneficial to standing valve (7) opens, plunger pull bar (1) drives fixed valve body (2) again when descending descending, be beneficial to standing valve (7) and close, standing valve (7) possesses sealing and opens and closes dual functions with passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201560414U CN201439749U (en) | 2009-05-14 | 2009-05-14 | Wear-prevention oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201560414U CN201439749U (en) | 2009-05-14 | 2009-05-14 | Wear-prevention oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439749U true CN201439749U (en) | 2010-04-21 |
Family
ID=42544419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201560414U Expired - Fee Related CN201439749U (en) | 2009-05-14 | 2009-05-14 | Wear-prevention oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439749U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105087A (en) * | 2016-11-25 | 2018-06-01 | 中国石油天然气股份有限公司 | Screw pump-driving rod and screw pump system |
| CN110159231A (en) * | 2019-07-10 | 2019-08-23 | 刘世江 | Oil well pump driving and Heating device for oil well |
| CN111980630A (en) * | 2020-08-03 | 2020-11-24 | 中国石油化工股份有限公司 | Pump depth adjusting method for oil well pump |
-
2009
- 2009-05-14 CN CN2009201560414U patent/CN201439749U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105087A (en) * | 2016-11-25 | 2018-06-01 | 中国石油天然气股份有限公司 | Screw pump-driving rod and screw pump system |
| CN108105087B (en) * | 2016-11-25 | 2019-10-11 | 中国石油天然气股份有限公司 | Screw pump-driving rod and screw pump system |
| CN110159231A (en) * | 2019-07-10 | 2019-08-23 | 刘世江 | Oil well pump driving and Heating device for oil well |
| CN110159231B (en) * | 2019-07-10 | 2024-03-01 | 东光县远东石油设备有限公司 | Oil pump driving and oil well heating device |
| CN111980630A (en) * | 2020-08-03 | 2020-11-24 | 中国石油化工股份有限公司 | Pump depth adjusting method for oil well pump |
| CN111980630B (en) * | 2020-08-03 | 2022-06-24 | 中国石油化工股份有限公司 | Pump depth adjusting method for oil well 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20120514 |