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专利名称：METHOD AND SYSTEM FOR TRANSMITTING
SIGNALS THROUGH A METAL TUBULAR
发明人：JABUSCH, KIRBY, D.申请号：EP04812543申请日：20041130公开号：EP16975A4公开日：20110907
摘要：A method for transmitting signals through a metal tubular includes the steps oftransmitting modulated electromagnetic signals through a non magnetic metal sectionof the metal tubular, detecting the signals or a field associated with the signals, andcontrolling or monitoring devices or operations associated with the metal tubularresponsive to the signals. A material, geometry, treatment, and alloying of the nonmagnetic metal section are selected to optimize signal transmission therethrough. Asystem for performing the method includes the metal tubular and the non magneticmetal section. The system can also include a transmitter device configured to movethrough the metal tubular emitting the electromagnetic signals, an antenna on theoutside of the non magnetic metal section configured to detect the electromagneticsignals, and a receiver-control circuit configured to generate control signals responsiveto the electromagnetic signals.
申请人：MARATHON OIL COMPANY
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