Determination method of pumping unit intermittent opening system based on effective stroke of oil well pump

Abstract

The invention belongs to the technical field of oil extraction, and particularly relates to a determination method of a pumping unit intermittent opening system based on the effective stroke of an oil well pump. The invention relates to a determination method of a pumping unit intermittent opening system based on the effective stroke of an oil well pump. The determination method comprises the following steps of obtaining an oil well indicator diagram through load and displacement sensors which are installed at a wellhead of a pumping unit, then establishing a sucker-rod pump oil extraction system model so as to obtain an oil well pump indicator diagram, and obtaining the effective stroke of the oil well pump through the oil well pump indicator diagram. When the condition that the actual effective stroke of the oil well pump is smaller than the minimum effective stroke of the oil well pump is detected, the pumping unit is stopped; and when the condition that the actual effective stroke of the oil well pump is larger than the maximum effective stroke of the oil well pump is detected, the pumping unit is started. According to the determination method, intelligent determination of the intermittent opening system is realized by determining the upper limit and the lower limit of the effective stroke of the oil well pump of an oil well, automatic start and stop and automatic braking of the pumping unit are determined through the intermittent opening system, and intelligent intermittent opening of the oil well is realized.

Description

technical field [0001] The invention belongs to the technical field of oil production, and in particular relates to a method for determining the spacing degree of an oil pumping unit based on the effective stroke of an oil pump. Background technique [0002] Low-permeability oilfields have high production costs. For low-permeability oilfields, there are many low-yield and low-efficiency oil wells. Such wells are easy to cause air pumping, which can cause increased wear of oil well pipes and rods, shorten the pump inspection cycle, and increase downhole operation costs. , It also causes the wear and tear of the pumping unit, and equipment failure occurs, which increases the maintenance cost. At the same time, the reactive power loss is large, which wastes electric energy, resulting in high cost per ton of oil. [0003] Interval production is an effective means for the efficient development of this type of well. In recent years, the international oil price has been hovering a...

AI Technical Summary

Problems solved by technology

How to fine-tune the management of oil wells under the condition of low oil price, improve the quality and increase efficiency has become an urgent problem for oilfield developers; at present, most of the wells with intermittent fluid flow generally adopt the artificial intermittent method, mainly through manual testing, analysis of dynamic fluid surface, and then determine such an interwell drilling system, but this method has problems such as high labor intensity, long period, and insufficient rationality, and the human influence is large

Images