Oil well pump gap leakage test method

Abstract

The invention discloses an oil well pump gap leakage test method which is mainly composed of pressure test joints (2), a lower-pressure charging pump system (3) and a high-pressure charging pump system (4), wherein the pressure test joints (2) are connected with an oil well pump (1), and the lower-pressure charging pump system (3) and the high-pressure charging pump system (4) are respectively communicated with the inside of the oil well pump (1) through the pressure test joints (2). The oil well pump gap leakage test method can test whether seal performance and pressure bearing strength of various cone pipe thread seal surfaces, various section seal surfaces, oil inlet valve seal surfaces and various pressure bearing parts of the oil well pump under underground liquid column pressure is reliable.

Description

technical field [0001] The invention relates to a device for testing the clearance loss of an oil well pump. 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 bushi...

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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