High-temperature integrated down-hole temperature and pressure measurement system

Abstract

The invention discloses a high-temperature integrated down-hole temperature and pressure measurement system. According to the high-temperature integrated down-hole temperature and pressure measurement system, signals of a high-temperature high-precision temperature sensor and a pressure sensor are transmitted into an amplification conditioning unit, analog voltage signals are subjected to filtering, amplification and compensating under the temperature and pressure changing condition and then input to a central processing unit, after being subjected to digital conversion through the central processing unit, the analog voltage signals are input to a high-temperature memory unit to be recorded and memorized, and the high-temperature memory unit, a high-temperature measurement and control system composed of the temperature sensor and a power supply unit, a datum communication interface and a programming port jointly form a high-temperature integrated independent chip. According to the high-temperature integrated down-hole temperature and pressure measurement system, the conditions that a traditional test instrument is decentralized in circuit structure, low in integration level and intellectualization, poor in reliability and difficult to repair are thoroughly changed, and therefore high-temperature down-hole measurement is achieved. The high-temperature integrated down-hole temperature and pressure measurement system can complete accurate measurement, memory and processing of the temperature and pressure intensity of different depths by means of the method that the system directly enters an oil layer and descends into a well at a time, and the high-temperature integrated down-hole temperature and pressure measurement system has the advantages of being unique in inventive concept, reasonable in structural design, convenient to use, flexible in use, suitable for industrial popularization and the like.

Description

technical field [0001] The invention relates to a detection and control system, in particular to a detection and control system for temperature and pressure in the field of downhole injection and production in oil fields and the field of geological downhole measurement and control. Background technique [0002] At present, the development of high-temperature and high-pressure oil and gas fields at home and abroad is in the initial stage of development, which is a huge challenge for domestic and foreign oil companies. The Gudrun high-temperature and high-pressure gas field located in the Norwegian side of the North Sea was shelved for a long time after it was discovered in 1975. It was not put into development until recent years, and it was officially put into production in April 2014. It can be seen that there is a certain difficulty. As the world's oil and gas exploration moves to the deep sea, more and more offshore high-temperature and high-pressure oil and gas fields wi...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-temperature integrated downhole temperature and pressure measurement system to realize the detection of temperature and pressure in the high temperature and harsh environment of 200°C downhole, and at the same time solve the problems of scattered circuit structure, large volume, low degree of integration and intelligence of traditional testing instruments , Poor reliability and difficult maintenance

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