Under-pump booster

Abstract

The invention discloses an under-pump liquid booster, which belongs to the technical field of petroleum exploitation. The liquid booster under the pump includes: the upper coupling, the upper connection sub-joint connected with the upper coupling, the lifting tube and the limit coupling connected with the upper connection sub-joint, the compensation elastic part, and the variable buckle connected with the lifting tube , the pump barrel connected with the variable buckle, the fixed valve combination connected with the pump barrel, the lower connecting nipple connected with the limit collar, the plunger connected with the lower connecting nipple, and the floating valve connected with the plunger combination. When the sucker rod is lowered, the liquid inlet tail pipe drives the lifting cylinder to move down to make the compensation elastic part compress and store energy; then the compensation elastic part releases the stored energy to make the plunger pressurize again in the pump barrel. When the sucker rod rises, the compensating elastic part stores and releases the energy again. By compensating the elastic part to store and release energy twice, the plunger is pressurized multiple times in the pump barrel to improve the pump efficiency. The original working mode is not changed, the bushing is not damaged by compensating elastic parts, and the accuracy of the dynamometer measurement is high.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to an under-pump liquid intensifier. Background technique [0002] With the continuous exploitation of oil, oil pumping equipment is constantly updated. For example, some oil pumping equipment is equipped with an under-pump liquid intensifier, and the efficiency of the oil pumping equipment is improved through the under-pump liquid intensifier. Therefore, how to design an under-pump liquid intensifier that can improve efficiency has become a problem of great concern to people in the field of oil extraction technology. [0003] At present, related technologies for improving the efficiency of oil pumping equipment include: oil pipe anchoring technology, oil pipe compensation technology, and sucker rod compensation technology. The related technologies all improve the pump efficiency by reducing the elastic expansion and contraction of the oil pipe and the pump rod. [0004]...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a liquid intensifier under the pump to solve the problems in the related art of reducing the elastic expansion and contraction of the oil pipe and the pump rod, damaging the casing, and measuring the low accuracy of the dynamometer diagram

Images