Many Layered Well Test Instrument Digital Systems Research

In petroleum exploration engineering field, more layered digital system in its field play an indispensable role. Study well test instrument layered data transmission system is the meaning of this system anti-jamming, anti-noise ability strong, high reliability, the security properties is good; The high-speed data transmission to. Is the digital systems downhole electronic unit is concerned, its undertaking the data acquisition, demodulation, the data transmission etc. Several tasks, and it is easy to see its workload is huge. Therefore, we must build a high-performance real-time signal processing system to meet the processing requirements.This paper mainly studies include:more layered well test instrument downhole modems circuit design, the more layered well test instrument downhole digital circuits and underground instrument of communication between the way. This system features not only has high processing functions, but also has a wide universality and depth of extensibility. At present, many layered well test instrument digital systems in logging in the application of the broader.In this paper, the authors give the demodulation circuit design scheme and realize the basic, and through the actual test, completed many layered well test instrument digital circuits and underground instrument of communication between the way. Composition system design is an inseparable part of the author in this paper studies some BPSK modulation demodulation method, power supply, the illusion succeeded to realize the downhole signal in long-distance transmission.