Water injection well regulation system and control method thereof

Abstract

The invention discloses a water injection well regulation system which comprises a portable computer positioned on a well, an industrial personal computer on the well, multiple water injection switchgears positioned below the well, and single-core cables connected with the industrial personal computer and the water injection switchgears, wherein each water injection switchgear comprises an electric control water injection mechanism; and each electric control water injection mechanism comprises a motor, a thread bushing, a valve element, a valve seat, a pressure sensor, a flow sensor and a temperature sensor arranged in a water injection switchgear shell, and a control circuit board which controls the action of the motor and acquisition and transmission of pressure, flow and temperature signals. According to the water injection well regulation system disclosed by the invention, the underground parameters can be detected in real time, the overload condition of the motor is detected in real time, the power circuit is stable in performance, the water injection switchgears and the water well valves are controlled in real time according to the underground parameters, and long-term reliable operation of the system can be ensured. The invention also provides a method for controlling the water injection well regulation system.

Description

technical field [0001] The invention relates to oil layer water injection technology, in particular to a water injection well control system and a control method thereof. Background technique [0002] "Injecting water into the oil layer and driving oil with water" is a commonly used oil displacement process in oil production engineering in my country. In order to reduce the water content of the produced fluid and increase the oil production, it is necessary to monitor and control the water content in each oil layer in real time. injection volume. [0003] After the traditional water injection tool is installed, it is necessary to adjust the injection volume by replacing the water nozzle. Every adjustment requires at least one operation, and the cost of each operation ranges from tens of thousands of yuan to hundreds of thousands of yuan. The implementation cost of the injection volume process has been high. [0004] In addition, in the traditional water injection process, t...

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Problems solved by technology

[0007] 1. The success rate of docking between the control device and the water injection switch installed in the well is low, and the parts at the docking place are easily damaged after several times of use, and the reliability is poor;

[0008] 2. When adjusting, it is necessary to stop production for construction, which will affect production;

[0009] 3. For every adjustment, the control device needs to be lowered. When adjusting, the wellhead needs to be opened, so cranes, well killing pump trucks, water trucks and other equipment and related equipment operators are required. When lowering the control device, cable winches and related equipment are required. For equipment operators, the cost of manpower and material resources is relatively high, and the working time is relatively long

[0010] 4. The water injection volume, downhole pressure and temperature cannot be measured. If the measurement is required, other measuring instruments need to be lowered through the cable, and this measurement method also consumes more manpower and material resources, and cannot realize real-time measurement

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