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This paper presents a novel method utilizing magnetic induction (MI) for wireless data transmission in oilfield borehole systems. Compared with conventional techniques, MI telemetry can achieve massive data transmission with low cost. Three coil configurations in borehole system are investigated, and most effective one is selected out based on numerical simulations. Through equivalent circuit model analysis, path loss and channel capacity are derived.more » « less
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Exploiting Magnetic Field Analysis to Characterize MI Wireless Communications in Subsea EnvironmentsIn this paper, we investigate the maximum transmission range and power efficiency of Magnetic Induction (MI) subsea wireless communication systems. We propose a new MI channel model based on maximum resonance voltage analysis. We prove that our channel model can maximize the system signal to noise ratio (SNR). Hence, the maximum transmission range of a MI wireless communication system can be determined accordingly. Furthermore, we quantify the eddy current loss of the MI coil antenna in seawater environments. The power consumption of a subsea MI wireless communication system is obtained by summing up the eddy current loss and ohmic loss. Finally, the relationship between the maximum transmission range and power consumption of a subsea MI wireless communication system is determined.more » « less
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Magnetic Induction (MI) is a promising technique for near-field wireless underwater communications. Although the literature has some theoretical analyses and lab experiments for underwater MI communication, there is a lack of field tests in underwater environments, especially in subsea environments. In this paper, we leverage the remotely operated vehicle (ROV) and the remotely controlled boat (RCB) to develop an MI wireless communication system, and conduct field tests for MI communication performance in both fresh water and sea water. The experiment results show that even in the most challenging subsea environment, the MI communication has very good near-field transmission performance with a small coil antenna and low power consumption.more » « less