An underground pumping machine

Abstract

The invention belongs to the technical field of underground oil extraction, and in particular relates to an underground oil pumping unit. The underground oil pumping unit has a compact and reasonable structure, low repair and maintenance costs, safe and environment-friendly oil extraction production process, can effectively reduce the working intensity of staff and greatly increase production. work efficiency. An underground pumping unit, comprising: an underground oil pumping operation unit, a combined oil well coil, and a Christmas tree connected to one end of the combined oil well coil through a wellhead hanger; the underground oil pumping unit consists of a deep well hydraulic reversing valve, Composed of a hydraulic cylinder and an oil well pump; among them, the deep well hydraulic reversing valve is provided with an upper chamber main oil pipe, an upper chamber auxiliary oil pipe, a lower chamber main oil pipe, and a lower chamber auxiliary oil pipe; the hydraulic cylinder is equipped with a hydraulic cylinder piston rod, and the oil well pump The oil pump piston, valve seat, valve core and spring are arranged in the center; the piston rod of the hydraulic cylinder is connected with the oil pump piston; the oil pump piston is set in the valve seat, the valve core is installed at the bottom of the valve seat, and the spring is installed on the back of the valve seat .

Description

technical field [0001] The invention belongs to the technical field of underground oil production, in particular to an underground oil pumping unit. Background technique [0002] As the most important lifting mechanical equipment of the rod pumping system, the performance of the pumping unit plays a vital role in oil extraction. At present, the existing mechanical oil extraction equipment can be specifically divided into: beam pumping unit, electric submersible centrifugal pumping unit, ground-driven screw pumping unit and the like according to the different working methods. However, the inventor found that the continuous low oil price at this stage has caused serious losses to domestic oil and gas exploration companies; and in response to the impact of low oil prices, domestic and foreign oil and gas exploration companies have adopted various measures such as reducing investment, reducing operations, and shutting down low-efficiency wells. remedial measures to reduce costs...

AI Technical Summary

Problems solved by technology

However, the inventor found that the continuous low oil price at this stage has caused serious losses to domestic oil and gas exploration companies; and in response to the impact of low oil prices, domestic and foreign oil and gas extraction companies have adopted various measures such as reducing investment, reducing operations, and shutting down low-efficiency wells. Remedial measures to reduce costs

However, due to the many cost components in the crude oil production process, the cost components that can be compressed are limited. For domestic oil companies, due to the obvious trend of resource inferiority, unless crude oil extraction equipment and mining technology have major technological breakthroughs or policy issues Otherwise, most domestic oil fields still cannot get rid of the loss-making situation under the current oil price situation

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