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Analysis of EM Channel of Producing Well

Measurements while drilling (MWD) is a new technology by which we can observe the measurement values of the drilling parameters in the way of real-time. Use the results of searching the electromagnetic (EM) transmission channel for MWD for reference, an EM transmission model for the wireless transmission is set up. In addition, the model parameters are calculated by using the effective transmission line method. Furthermore, the characteristic of the channel is analyzed and the discussions of the factors influencing the performance of the channel are also given. This research serves as an important criterion for the research of the other problems of MWD.