Leakage-free sealing plunger, anti-blocking oil well pump and slow-pumping oil extraction system

Abstract

The invention discloses a leakage-free sealing plunger, an anti-blocking oil well pump and a slow-pumping oil extraction system. The leakage-free sealing plunger comprise an upper valve cover (101), a plunger pipe (103), a lower valve cover (106) and a lower valve seat pressing cap (108) which are hermetically and fixedly connected in sequence from top to bottom, as well as an upper valve ball valve seat (102) arranged in the upper valve cover (101) and a lower valve ball valve seat (107) arranged in the lower valve cover (106), the outer wall of a pipe body of the plunger pipe (103) is fixedly sleeved with a plurality of copper leather cup supporting sleeves (104) from top to bottom, each copper leather cup supporting sleeve (104) is fixedly provided with a copper leather cup (105), and the upper portion of each copper leather cup (105) is provided with a plurality of kerfs (1052). A copper sealing plunger structure is adopted, meanwhile, a copper sealing piece is provided with a scale scraping blade to prevent the pump from being stuck, the leakage amount of the oil well pump is eliminated to the maximum extent, and therefore the oil extraction efficiency is improved, the well repairing frequency is reduced, and the well repairing cost is greatly reduced.

Description

technical field [0001] The invention relates to an oil pump and an oil extraction system, in particular to a leak-free sealing plunger, an anti-jamming oil pump and a slow pumping oil extraction system. Background technique [0002] In the current oilfield development, the standard oil well pump plunger and the pump barrel are in clearance fit, and the oil well pump has a certain amount of leakage. During the production process, the plunger reciprocates thousands of times in the pump barrel every day, lifting the oil flow to the ground continuously. , The clearance of the pump is small, the leakage is small, and the pump efficiency is high, but it is easy to lift the pump and repair the well due to the stuck pump. Before the pump is completely stuck, the relative movement of the plunger and the pump barrel will cause the surface of the plunger and the pump barrel. The inner surface is scratched, a large number of scratches will reduce the pump efficiency, and even lead to t...

AI Technical Summary

Problems solved by technology

However, the leakage volume of the current standard oil well pump limits the stroke times of the pumping unit. If the stroke frequency is too small, the leakage volume will be greater than the pumping volume, resulting in a significant reduction in pump efficiency.

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