System and method for controlling interval pumping of oil well

Abstract

The invention discloses a method for controlling interval pumping of an oil well, which comprises the following steps of: generating a pump dynamograph of the oil well according to a ground indicator diagram of the oil well and basic parameters of the oil well, wherein the basic parameters include a water content parameter of the oil well, a gas oil ratio, a viscosity, a stem diameter, a stem length, a pump diameter, a pump depth and the like; and controlling the interval pumping of the oil well according to the pump dynamograph. The invention further discloses a system for controlling the interval pumping of the oil well, which comprises an acquiring module, a ground indicator diagram generation module, a pump dynamograph generation module and an interval pumping control module. With thesystem and the method for controlling the interval pumping of the oil well, the optimal interval extraction starting point and interval extraction time can be analyzed in real time in combination with the oil production law of the oil well, remote intelligent self dynamic interval pumping control of the oil well is implemented, and consequently energy for the oil well is saved, consumption of theoil well is reduced and loss of operating apparatuses is also reduced.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a control system and method for pumping between oil wells. Background technique [0002] At present, there are many companies in China that make energy-saving automatic control equipment for oil fields, and there are also a lot of products. Most of the energy-saving devices tested or applied in oil fields are for the purpose of electric control and energy saving in conventional pumping wells, so few applications are really aimed at realizing time-saving Pumping automation control as the main function of the equipment. At present, the interval pumping equipment developed and used in China has the following characteristics: [0003] 1. Most of the intermittent pumping equipment collects signals to collect data signals of motor current, voltage or motor power. As the basis for analysis and judgment, this kind of intermittent pumping equipment has the ability to judge the lack of ...

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Problems solved by technology

The downhole pump conditions are quite complicated, and there are many factors that cause changes, so it is not very convenient to judge the stop pumping standard, so the intermittent pumping effect is not ideal

[0004] 2. It is necessary to debug and input the critical value before installation

The disadvantage is the lack of dynamic and timely adjustment of the oil well's fluid supply capacity

[0005] 3. Most of the equipment is equipped with a man-machine dialogue interface, which can conveniently input and configure the equipment, but requires the management and cooperation of on-site personnel

The disadvantage is that the equipment still needs the assistance of on-site personnel when it is controlled, and it cannot realize complete automation and remote control.

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