Energy consumption-free liquid charge pump for jack well

Abstract

The invention relates to liquid charge pumps, in particular to an energy consumption-free liquid charge pump for a jack well. The liquid charge pump is formed by a pump body, a plunger, a liquid inlet and a liquid outlet; the liquid inlet is formed in one side of the lower part of the pump body, and the liquid outlet is formed in the other side of the pump body; one end of the plunger is arranged in the inner cavity of the pump body; the upper part of the inner cavity is fixed by a gland of which the packing is connected to the top of the pump body by a screw port; a platen is fixed at the upper part of the other end of the plunger; a spring is arranged between an annular boss at the upper part of the pump body and the platen; the upper screw port of the liquid inlet is connected with a liquid inlet check valve body, and the screw port of the liquid outlet is connected with a liquid outlet check valve body; the top of the plunger is slidably connected with a walking beam in the jack well. The liquid charge pump is powered and connected by the vertical reciprocation of the walking beam on a pumping unit, certain electric-driven supporting facilities are saved, and the energy consumption-free liquid charge pump has the characteristics that the size is small, the weight is light, the structure is simple, the flow is precisely adjusted by the rest energy of the pumping unit without consuming electric energy in the operation process, the cost is low and the like.

Description

Technical field [0001] The invention relates to a liquid injection pump, in particular to a non-energy-consuming liquid injection pump for oil pumping wells. Background technique [0002] In the oil field development process, the water from the water injection well is injected into the oil reservoir through a special injection pump to maintain or restore the oil layer pressure, so that the oil reservoir has a strong driving force, so as to improve the oil reservoir's production speed and recovery efficiency . At present, the liquid injection pumps on the existing oil production wells are all driven by electric drive. Due to the uninterrupted work of the oil extraction machine and the liquid injection pump, the energy consumption of the liquid injection pump is relatively large, and the pump body has more supporting facilities. , It occupies a large space and increases the operating cost, and the low-energy-consumption motor often fails to reach the due pump pressure and cannot b...

AI Technical Summary

Problems solved by technology

At present, the liquid injection pumps on the existing oil production wells are all driven by electric power. Due to the uninterrupted work of the oil extraction machine and the liquid injection pump, the energy consumption of the liquid injection pump is relatively large, and there are many supporting facilities for the pump body. , takes up a lot of space, increases the operating cost, and the motor with low energy consumption often cannot reach the proper pump pressure, and cannot perform normal liquid injection

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