A Low Cost Design for Long Distance Communication Between Logging Tools
Jin Wei-wu · Measurement & Control Technology · 2010
A long distance communication method for oil well logging is proposed.The Manchester encode/decode algorithms is implemented in the MCUs with the help of low cost signal driver and wave shaping circuits,making the signal be transmitted long distance.The application on a through casing resistivity logging tool using 6 km cable shows that the design can transmit-receive data steadily and act intelligently.The high temperature tolerant chips adopted can be obtained easily in the market,which fits the requirement of logging tools' working condition.The design presents nice applications in petroleum exploration and logging area.