Sand prevention stop-adding oil-well pump device

Abstract

The invention belongs to a sand blockage-preventing pumping-increasing oil pump device used in an underground oil field production well, wherein a pump barrel is in the shape of a cylinder; an upper expanding ring and a lower expanding ring are provided with screw threads inside; the ring wall of each ring is provided with an opening in longitudinal direction; a pump cap is a cylindrical body with the top provided with internal threads; the periphery of a pump cap cylinder is provided with external threads, while the internal lower part is provided with internal threads; a valve ball is a spherical body; a pump body is a cylindrical body with the center provided with a through hole and the periphery of the lower part is provided with external threads. The lower expanding ring and the upper expanding ring are screwed in the periphery of the upper part of the pump cap, while the valve ball is arranged inside the pump cap; the upper part of the pump body is assembled together with the lower part of the pump cap; the external threads of the lower part of the pump body is screwed in the screw holes of the lower expanding ring and the upper expanding ring; the pump cap is fixed with the pump body and is arranged inside the pump barrel; moreover, the periphery of each end of the defueling pump is provided with an expanding ring. Obviously, the gap of the pump barrel is closed under the expansion action and the contraction action of the expanding ring. The sand blockage-preventing pumping-increasing oil pump device prevents oil return during pumping oil and also prevents sand from blocking a pump, thereby reducing well repair frequency, saving service charge and increasing oil production to 8 to 20 percent.

Description

1. Technical field: [0001] The anti-sand jam increasing oil well pump device belongs to the oil well pump device under the oil production well of an oil field. 2. Background technology: [0002] As we all know, there are two problems in downhole oil well pumps in oilfields at present. One is the oil return of the oil well pump. Especially after the oil well pump has been used for three months, the increased wear gap between the periphery of the pump body and the inner wall of the pump barrel will result in an increase in oil return. Large, reducing oil pumping output, wasting electric energy. The second is that the inner wall of the pump barrel and the outer wall of the pump squeeze the sand particles, causing the pump body to be stuck and the pumping unit unable to work. These are two major problems in oil production operations in oil fields. 3. Contents of the invention: [0003] It is to provide a kind of anti-sand jamming oil pump device installed in the oil productio...

AI Technical Summary

Problems solved by technology

[0002] As we all know, there are two problems in downhole well pumps in oil fields. One is the oil return of the oil well pump. Especially after the oil well pump has been used for three months, the increased wear gap between the periphery of the pump body and the inner wall of the pump barrel will cause an increase in the amount of oil returned. Large, reducing oil pumping output and wasting electric energy

The second is that the inner wall of the pump barrel and the outer wall of the pump squeeze the sand particles, causing the pump body to be stuck and the pumping unit unable to work. These are two major problems in oil production operations

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