Throttling well killing manifold electrical control system based on expert PID controller

An electrical control system, choke and kill technology, applied in the mechanical field, can solve the problems of dependent control accuracy, inability to adjust pressure changes in time, slow control process, etc., and achieve the effect of facilitating related laws and theoretical research

Inactive Publication Date: 2018-06-01
李晓兵
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this method is that the equipment is simple, but the control accuracy depends on the operator's experience, the control process is relatively slow, and the pressure change cannot be adjusted in time

Method used

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  • Throttling well killing manifold electrical control system based on expert PID controller
  • Throttling well killing manifold electrical control system based on expert PID controller

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with drawings and embodiments.

[0012] Such as figure 1 , Choke manifold electrical control system consists of a pressure detection part, an expert PID regulator with a single-chip microcomputer as the core, and a pressure regulation actuator composed of a frequency converter and an electric valve.

[0013] The whole system is a pressure negative feedback closed-loop control system.

[0014] Since the model of the manifold system is difficult to obtain, it is difficult to obtain a satisfactory control effect by using the conventional PID control algorithm for the regulator. By referring to the manual control law and summarizing the manual control law, the expert control law can be obtained. Expert control is based on various knowledge of controlled objects and control laws, and uses these knowledge to design controllers in an intelligent way. Using expert experience to design PID parameters constitut...

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Abstract

Disclosed is a throttling well killing manifold electrical control system based on an expert PID controller. Through the expert PID controller, the output voltage can be changed to control the frequency of a variable frequency governor of an executing mechanism, so that the whole system maintains the given pressure, and intelligent control over the casing pressure and the standpipe pressure is achieved. According to the throttling manifold electrical control system, intelligent control over the casing pressure and the standpipe pressure is achieved, the control precision is obviously superiorto that of manual control, displaying, storing and replaying of parameters such as the standpipe pressure, the casing pressure and the opening degree are achieved, and subsequent study on related lawsand theories of underbalance is facilitated.

Description

technical field [0001] The invention relates to a choke and kill manifold electrical control system based on an expert PID controller, which is suitable for the mechanical field. Background technique [0002] The choke and kill manifold is the necessary equipment to control well kick and implement oil and gas well pressure control technology in the process of oilfield drilling. The equipment maintains the pressure balance in the well by controlling the casing pressure and standpipe pressure; through the throttle valve, the pressure is released to realize soft shut-in and prevent blowout to protect the wellhead. [0003] The traditional control method of the manifold is to realize the pressure balance control by manually controlling the opening degree of the valve or manually controlling the opening degree of the valve through the hydraulic device to maintain the pressure balance relationship in the well. The advantage of this method is that the equipment is simple, but the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B21/08
CPCE21B21/08
Inventor 李晓兵
Owner 李晓兵
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