MONITORING AND CONTROL OF OIL/GAS FIELDS

摘要

An oil/gas field system for monitoring certain characteristics in an oil and/or gas field and for controlling certain operating equipment in the field containing: a sensor (9) measuring the characteristic and for generating a signal (8) corresponding to a value of the characteristic; servo devices (11) for controlling the operation of the equipment; programmable logic (5) connected to a certain number of said sensors (9) for receiving the signals (8) of the sensors (9), the logic device (5) having outputs connected to the servo devices (11) for automatically changing the status of said equipment controlled by the servo devices when the input electrical signals are outside some allowed range remedy a non-complying condition of the equipment; and control computer remote from but connected to the logic for establishing the allowed ranges in the logic and for establishing control signals in the logic device for controlling the output of the logic device to the servo means.