Long plunger anti-air separation and mixed out oil well pump

Abstract

The invention relates to a long-plunger-piston gas-locking-prevention respective pumping mixing oil well pump, which comprises an oil rod, an oil well pump joint, a dirt storage tube, a first pump tube joint, an upper pump tube, a plunger piston, a second pump tube joint, a piston, a constant pressure slide sleeve outer tube, a lower pump tube, a packer and a fixed valve, wherein the lower end of the oil rod is connected with the plunger piston, the plunger piston is arranged in the upper pump tube and the lower pump tube in a penetrating way, the upper part of the upper pump tube is sequentially provided with the oil well pump joint and the dirt storage tube, the second pump tube joint and the constant pressure slide sleeve outer tube are arranged between the upper pump tube and the lower pump tube, the piston is arranged in the constant pressure slide sleeve outer tube, the lower part of the piston is provided with a copper pin, and the tail end of the lower pump tube is sequentially connected with the packer and the fixed valve. The problems of poor oil extraction effect and interlayer mutual invasion caused by nonuniform energy of each storage layer and the like can be effectively solved, the gas locking can be effectively prevented, and the pump efficiency is improved.

Description

technical field [0001] The invention belongs to an oil production device, in particular to a long plunger anti-gas separation pumping and mixing out oil well pump. Background technique [0002] In the field of mechanical oil recovery industry, we often encounter complex situations after the production well enters the middle and late stages, such as opening multiple reservoirs in stages in the early stage, and supplying liquid at the same time in multiple layers. Due to the difference in pressure and permeability between the reservoirs, As a result, the liquid supply capabilities of each layer are different from each other. [0003] Affected by the above conditions, the ideal migration phase of each reservoir in the oil well will inevitably change accordingly, and high-yielding layers often block the relatively low-yielding layers from supplying liquid, thus reducing production and affecting oil recovery. Contents of the invention [0004] The technical problem to be solv...

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Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a mixed pump that can effectively solve the problems of poor oil recovery and interlayer invasion caused by the uneven energy of each reservoir.

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