Winding pumping unit

Abstract

The invention discloses a winding pumping unit. The winding pumping unit comprises a bracket, a large head sheave, a traction mechanism, a weight box and a pumping rod, the large head sheave is mounted at the top part of the bracket, the traction mechanism bypasses the large head sheave and is respectively connected with the pumping rod and the weight box, and the pumping rod is connected with a load of a pumping well mouth; and the weight of the weight box is or is near to an average value of the sum of the maximal load value of the ascending pumping rod and the maximal load value of the descending pumping rod. The winding pumping unit provided by the embodiment of the invention has the technical effects of simple structure, high efficiency, long stroke, low frequency of stroke, ultra-silence, zero pollution and the like.

Description

technical field [0001] The embodiment of the present invention relates to oil extraction equipment in an oil field, in particular to a winch pumping unit. Background technique [0002] At present, there are many kinds of oil extraction equipment, which are mainly divided into traditional beam pumping unit and non-beam pumping unit. The structure of the beam pumping unit is simple, the stroke is short and the number of strokes is high. Under a certain displacement, the wear of the sucker rod, plunger, wellhead and other components will be aggravated. However, due to its own mechanical structure, the energy consumption is high and the efficiency is low. The point load should not be too large to adapt to the working conditions of heavy oil and large displacement wells. [0003] Beamless pumping units are divided into different types of pumping units according to the balance method, power type, transmission medium, etc., which overcome some of the disadvantages of beam pumping ...

AI Technical Summary

Problems solved by technology

However, because the driving rope bears the load at the same time, when it encounters a heavy load, its production cost will rise rapidly, and the selling price will reach a height that the market cannot accept. Therefore, this structure pumping unit is only used for small and medium loads The model has a certain market and has its limitations

[0004] Anshan pumping units and plateau pumping units, which use a mechanical chain structure for reversing, both use a reducer to achieve lifting torque. The advantage is that it solves the problem of large loads on the pumping unit, but its common disadvantages are complex structure, low efficiency, Loud noise, many transmission parts, many fault points, long maintenance time, affecting the production of oil wells, and a large amount of lubricating oil needs to be replaced regularly, which is easy to leak and cause environmental pollution

Images