Gear rack travelling oil extraction machine

Abstract

The invention discloses a gear rack travelling oil extraction machine and belongs to the technical field of an oil pumping unit. The gear rack travelling oil extraction machine comprises a tower frame (3), a left vertical rack (4) and a right vertical rack (5) which are installed on the tower frame (3), a speed-change travelling mechanism (6) installed between the left vertical rack (4) and the right vertival rack (5), a motor (1) which is installed on the speed-change travelling mechanism and is used for driving the speed-change travelling mechanism to move back and forth along the left vertical rack (4) and the right vertical rack (5); the gear rack travelling oil extraction machine further comprises a fixed pulley (7) installed at the top of the tower frame (3), an oil extraction lever, and a steel wire rope (2) of which one end is connected with the speed-change travelling mechanism and the other end is connected with the oil extraction lever passing by the fixed pulley (7). The oil pumping unit has the advantages of simple structure, stable operation and convenience for maintainance, high efficiency, less space occupation and the like.

Description

technical field [0001] The invention belongs to a new type of long-stroke and low-stroke energy-saving rack-and-pinion walking type energy-saving oil pumping unit, which is used for mechanical small-space oil extraction of oil and water wells in oil fields. Background technique [0002] In the petroleum industry, there are two main methods of oil recovery: self-spray oil recovery and mechanical oil recovery. Spontaneous oil production uses the energy of the bottom layer itself to lift crude oil. It is common in some newly developed oil fields with large reserves. However, with the continuous development of oil fields, the pressure of the bottom layer continues to decrease, and the energy of the bottom layer itself is not enough to make the crude oil self-spray. In oil fields developed by water flooding, water flooding and strong water flooding also occur in the middle and late stages, so mechanical equipment must be used to lift crude oil from the bottom of the well to the g...

AI Technical Summary

Problems solved by technology

The most widely used oil pumping equipment at home and abroad is the beam pumping unit. Its basic features are simple structure, easy manufacture, and convenient maintenance. Stroke, the requirement of low stroke times, so it cannot meet the needs of heavy oil wells, deep oil wells and gas-bearing oil wells. In addition, the acceleration of the suspension point movement of the donkey head is relatively large, the balance effect is poor, and the efficiency is low. The shortcomings such as too bulky, low motor power utilization, and large torque fluctuations of the reducer have been paid attention to by various oil wells and scientific research institutions.

Images