Annular valve anti-gas pump and oil pumping technology thereof

Abstract

The invention discloses an annular valve anti-gas pump which is mainly composed of a pump cylinder (5), a plunger (6) arranged in the pump cylinder (5), and a valve rod (9) arranged on the plunger (6) in a penetrating mode. An annular valve seat assembly (3) is arranged on the upper portion of the valve rod (9). A standing valve assembly (8) is arranged on the lower portion of the valve rod (9). The invention further discloses an oil pumping technology based on the annular valve anti-gas pump. The annular valve anti-gas pump and the oil pumping technology based on the annular valve anti-gas pump are suitable for high gas-oil ratio wells containing little sands, high in pump efficiency, long in service life, and convenient to use and maintain.

Description

technical field [0001] The invention relates to an annular valve anti-air pump and its oil pumping process. Background technique [0002] Before the 20th century, the development of oil well pump technology at home and abroad was slow, and it was not until the middle of the 20th century that the whole barrel oil well pump was studied and produced simultaneously with the bushing type oil well pump. There are two technically controversial issues about oil well pumps: one is whether the whole barrel type oil well pump is better or the bushing type oil well pump is better; the other is whether it is better to have sand control grooves on the plunger or not to have sand control grooves. Until the 1980s, due to the significant improvement of the pump efficiency of the whole barrel pump, it is generally about 10% higher than that of the bushing pump, which prolongs the service life of the plunger pump barrel pair, and can save about 40% of high-quality steel. Instead of the bushin...

AI Technical Summary

Problems solved by technology

There are two technically controversial issues about oil well pumps: one is whether the whole cylinder type oil well pump is better or the bushing type oil well pump is better; the other is whether it is better to have sand control grooves on the plunger or no sand control grooves

These gases occupy part of the volume of the pump chamber, which will reduce the fullness of the pump chamber, resulting in the lagging of the valve ball of the oil well pump, and even the phenomenon of "air lock"

"Hydraulic shock" also occurs during "air lock", causing vibration of the rod pumping system and accelerating its damage

As a result, pumping wells are frequently operated, shortening the pump inspection cycle, and increasing development costs

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