Method of synchronous numerical control oil pumping according to stroke frequency for oil well testing and operation after filling of pump

Abstract

The invention discloses a synchronous numerical control oil pumping method for oil well testing and equal pump filling according to stroke frequency, and relates to the technical field of oil filed development and oil pumping production. According to the method, software is used to control 'an intelligent oil pumping machine capable of operating after filling of a pump' with a large stroke linearconstant-speed and low-speed motion, time control is taken as means, the load test is taken as the basis, a downhole optimized 'double-acting rod-type oil pump capable of being filled and dischargingoil' with a large diameter and large stroke can be driven by an oil rod and an oil pipe, the stroke frequency is taken as the unit, the pump does not run if not filled and runs after being filled, thetime of stopping the machine to wait for the pump to fill up can automatically adapt to the oil well production, at the same time, the power diagram test, metering, a dynamic liquid level, comprehensive water cut, a static load curve, mixed liquid density, effective stroke, pump efficiency, delay time, oil pumping efficiency and the like are all completed simultaneously and synchronously with oilpumping in one stroke frequency, and the real-time network transmission is achieved. According to the technical scheme, the problems of too low pumping efficiency, high production cost and poor benefit in the prior art are solved.

Description

technical field [0001] The invention relates to a synchronous numerical control oil pumping method for oil well testing and equal pump filling according to stroke times, which relates to the technical field of oilfield development and oil pumping production, in particular to a synchronous numerical control oil pumping method for oil well testing and equal pump filling according to stroke times. Background technique [0002] The existing oil pumping method based on the beam pumping unit and the whole tube type oil pump is hereinafter referred to as [existing oil pumping method] with a history of more than 100 years. The rod is connected to the downhole pump for oil production. Historical practice has proved that rod pumping is the most economical and reliable method of pumping. At the same time, the beam pumping unit has high reliability and can be used in the field for a long time without anyone on duty. Safe operation, of course, this high reliability is based on the low-ef...

AI Technical Summary

Problems solved by technology

The most important parameter to show the dynamics of underground reservoirs is oil production measurement of oil wells. Excessive error is generally recognized as a long-standing and difficult problem. The most important parameter of oil well management is needless to say, the dynamometer diagram cannot be quantified, even whether the oil production is normal or not. Only skilled technicians can explain that the comprehensive water cut is even of low reference value, because the oil well production is very low and the pump cannot be fully filled, and the value of dynamic fluid level can only be used as a reference

In addition, the production is measured daily, and the rest are measured every ten days. Problems in oil wells can only be discovered after a few days. The timely, complete, and accurate requirements for oilfield development are not realistic at all. There are also downhole equipment leakage, pump efficiency, parameter adjustment, and pumping efficiency. , energy consumption and other important issues, there is no test and no standard stable and unified calculation management method

If you want to completely change the passive situation of poor production efficiency, you need to solve two problems: one is real-time, accurate and comprehensive digital testing of oil wells, improving the

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