Oil well pump for oil field

A technology for oil well pumps and oil fields, applied in the direction of pumps, parts of pumping devices for elastic fluids, pump elements, etc., can solve the problem of sticking to the inner wall of the pump barrel 2, reducing the efficiency of the oil well pump, and occupying the negative pressure area Space and other issues, to achieve the effect of increasing the service life, reducing sand concentration, and reducing direct impact
CN112012913AActive Publication Date: 2020-12-01东营市三和石油装备有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
东营市三和石油装备有限公司
Publication Date
2020-12-01

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Abstract

The invention relates to the technical field of oil field exploitation, and discloses an oil well pump for an oil field. The oil well pump comprises an oil well, a pump cylinder and an oil inlet cavity, wherein the pump cylinder is fixedly sleeved with the oil well; and the top end of the oil inlet cavity is fixedly connected with the bottom end of the pump cylinder. Through arrangement of a spiral scraper, crude oil adhered to the inner wall of the pump cylinder is removed below a plunger, so that the thickness of the adhered crude oil is reduced, an oil film is better formed, sand grains inthe crude oil adhered to the inner wall of the pump cylinder are reduced, the accumulation of the sand grains between the plunger and the pump cylinder is reduced, plunger wear is reduced, and the service life of the oil well pump is prolonged. Meanwhile, through arrangement of a center shaft and a cross rod, the spiral scraper rotates under the upward impact of the crude oil along with descendingof the plunger, and then a middle sealing ball is driven to rotate, so that the crude oil forms rotational flow to be conveyed upwards, resistance to the plunger is reduced, the conveying rate is increased, direct impact with the middle sealing ball is reduced, and the conveying rate of the crude oil is further increased.
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Description

Technical field

[0001] Technical Field The present invention relates to oil exploration, particularly for oil field as a pump. Background technique

[0002] A common pump on the oil pumped to the surface of the well pumping equipment, such as attachment Figure 8 As shown in which way the pumping of crude oil by lifting up and down movement of the plunger 5 from the lower to the height and the oil pumped from the outer bottom uphole output well, when the piston 5 upwards, its lower portion forming the negative pressure, the sealing ball 7 and the sealing ball 6 is closed, the sealing ball 4 is pulled up, so that the crude oil into the cylinder 2 from the pump into the oil chamber 3, while the upper portion of crude oil lifting piston 5, when the plunger 5 downward, the sealing ball 4 is closed, the sealing ball 7 and the ball 6 on the opening seal, with the decline of the piston 5, the piston 5 into the lower portion of the piston 5 in the oil gradually, thereby forming cycle, to ...

Claims

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