Automatic control system and method for offshore production platform

An automatic control system and oil production platform technology, applied in the sequence/logic controller program control, electrical program control, production fluid and other directions, can solve the problems of low production efficiency, high oil production cost, harsh working environment for workers, etc. The effect of reducing the cost of oil production, improving the degree of automatic control and high reliability

Inactive Publication Date: 2012-02-01
LANZHOU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0003] The existing oil extraction process is that workers go to various oil extraction platforms by boat to carry out manual oil extraction. After the oil extraction is completed, they call the oil tanker by radio to collect crude oil, resulting in high oil extraction costs, low production efficiency, and harsh working conditions for workers.

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  • Automatic control system and method for offshore production platform
  • Automatic control system and method for offshore production platform
  • Automatic control system and method for offshore production platform

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Embodiment Construction

[0024] Such as figure 1 As shown, the downhole safety valve 1, the surface main safety valve 2 and the ground wing safety valve 3 are pneumatic valves, and the opening and closing of these valves are controlled by the PLC controller 19. During the oil production process, these valves are opened, the oil production process is completed, or the oil production process is completed. These valves are automatically closed when there is a suspension for some reason, or when the oil production equipment fails, or a safety accident occurs.

[0025] The pressure of the crude oil in the incoming oil pipeline at the wellhead is detected by the pressure sensor 4, the normal working pressure range is 0.08-0.6 MPa, and the corresponding output of the sensor is 4-20 mA. When the crude oil pressure exceeds 0.6MPa, the PLC controller 19 sends out a high-limit alarm (the pressure over-limit signal light flashes); when the crude oil pressure exceeds 1.0MPa, the PLC controller 19 sends out a high-...

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Abstract

The invention discloses an automatic control system and method for an offshore production platform. The system consists of an automatic control device, a crude oil treatment system and an oil transmission system, wherein the automatic control device consists of a PLC (programmable logical controller), a touch screen and peripheral test equipment; the crude oil treatment system comprises main devices such as an electrical heater, an oil-gas separator, an oil eliminator and the like; and the oil transmission system comprises an oil tanker, an oil transmission pipeline and an electric valve. The PLC and the touch screen which are positioned in the automatic control device are used for monitoring the process parameters of the production process through programming, treating the crude oil according to the crude oil treatment process flow and automatically controlling the oil tanker to collect the crude oil of the platform at fixed point; the PLC has perfect alarming, failure self-diagnosis and protection functions; and the touch screen can display the procedure parameters of the crude oil treatment in real time, perform manual intervention on the crude oil treatment procedure as well as automatically pop up the failure message screen in case of alarm and failure events. The data exchange can be realized between the PLC and the touch screen through a field bus.

Description

technical field [0001] The present invention relates to the technical field of computer automatic control of offshore oil production platforms, especially the unattended operation of the oil production process of the offshore oil production platform, coordinated and controlled by the PLC controller in the automatic control system, and the automatic completion of the oil production process according to the offshore oil production process. The tanker issued a "receipt oil" request order to notify the tanker to collect crude oil at a fixed point. When the oil production process is suspended for some reason or the oil production equipment fails, the automatic control system will automatically send out a signal of "oil production process suspended for some reason" or "oil production equipment failure" to notify the frontline headquarters to send personnel to the platform to repair the oil production equipment. Background technique [0002] The exploration and drilling of offshore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/01E21B43/34E21B34/16G05B19/05
Inventor 党存禄张晓英
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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