Intelligent well underground data collecting system based on high-temperature single-chip microcomputer

Abstract

The invention discloses an intelligent well underground data collecting system based on a high-temperature single-chip microcomputer. The intelligent well underground data collecting system is composed of an underground part and a ground part which are connected through a single-core steel armor cable. The underground part is composed of a sensor set and a data processing and transmitting circuit. The ground part is composed of a data receiver uploading circuit and a system host. 220V alternating current is remotely transmitted to the underground part to be supplied from the ground through the cable. The sensor set comprises a temperature sensor, a pressure sensor and a displacement sensor. Signals of the sensor set are converted into voltage signals after being conditioned, a simulation multiplexer HT506 is utilized for carrying out selective collection, the signals are converted through an A / D converter HT574 and then are transmitted to a microprocessor HT83C51, an HJ389 high-temperature pulse composite signal lone-line driver is adopted as a drive circuit to transmit the signals to the cable, an HJ388 pulse signal preprocessing module in the data receiver uploading circuit carries out signal conditioning on the transmitted underground signals, and the processed signals are transmitted to the microprocessor single-chip microcomputer and then transmitted to the host through an interface circuit MAX232. The pressure, the temperature and the valve displacement are monitored in real time, and long-term stable working under the high temperature environment of 175 DEG C can be achieved.

Description

technical field [0001] The invention relates to a data acquisition system, in particular to an intelligent downhole data acquisition system based on a high-temperature single-chip microcomputer. Background technique [0002] Compared with conventional wells, the biggest technical advantage of smart wells is that they can monitor various downhole parameters in real time and control the oil well at the same time, that is, the downhole temperature, pressure and other data are measured in real time through downhole sensors, which are then analyzed by the central control system and Control the downhole flow control device from the surface according to the demand, so as to realize the dynamic management of the flow rate and flow characteristics of the downhole production or injection fluid. At present, the research on intelligent well system in China has just started, and due to the existence of technical bottlenecks, the development is slow, and the application is not widespread....

AI Technical Summary

Problems solved by technology

At present, the research on intelligent well systems in China has just started, and due to the existence of technical bottlenecks, the development is slow and the application is not widespread

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