Oil well pump, oil extraction system of submersible linear motor well and working method of oil extraction system

Abstract

The embodiment of the invention provides an oil well pump, an oil extraction system of a submersible linear motor well and a working method of the oil extraction system. The oil well pump comprises a pump cylinder, a plunger, a travelling valve, a fixed valve and an oil outlet joint, wherein the plunger is arranged on the inner side of the pump cylinder; the end, provided with a chuck, of an on-off connector is connected with a drive device of the oil well pump in a clamped mode or breaks away from the drive device, the other end of the on-off connector is connected with the bottom end of the plunger, and the drive device drives the plunger to reciprocate through the on-off connector; the travelling valve is arranged on the upper portion of an inner cavity of the plunger; the fixed valve is arranged at the top end of the plunger and in an inner cavity of the pump cylinder; the oil outlet joint is connected with the top end of the pump cylinder through a sealing and locking device; the outer side of one end of a sucker rod is in threaded connection with the inner side of the oil outlet joint and is used for providing external force allowing the end, provided with the chuck, of the on-off connector to be connected with the drive device of the oil well pump in the clamped mode or break away from the drive device. According to the oil well pump, the oil extraction system of the submersible linear motor well and the working method of the oil extraction system, the oil well pump is not directly and fixedly connected with the drive device any longer, the oil well pump is connected with the drive device in the clamped mode or breaks away from the drive device at any time through the on-off connector, and therefore pump inspection is easier and more convenient.

Description

technical field [0001] The invention relates to the technical field of oil well lifting in oil exploitation, in particular to an oil well pump, an oil recovery system for a submersible linear motor well and a working method thereof. Background technique [0002] At present, the submersible linear motor oil well pump mainly solves the problem of eccentric wear of the sucker rod and tubing caused by well deviation, and secondly has the advantages of energy saving, environmental protection and intelligent management. [0003] The submersible linear motor oil well pump is mainly composed of two major systems: the submersible linear motor system and the oil well pump system. The submersible linear motor system directly converts electrical energy into reciprocating linear motion, and the oil well pump system lifts the bottom hole liquid to the wellhead. In the submersible linear motor oil well pump, the mover push rod of the submersible linear motor system is directly connected w...

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Problems solved by technology

[0005] The embodiment of the present invention provides an oil well pump, an oil production system of a submersible linear motor well and a working method thereof, which solves the technical problem of difficult pump inspection operation of the submersible linear motor oil well pump in the prior art

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