Electromagnetic borehole telemetry system incorporating a conductive borehole tubular von WISLER MACMILLIAN M, HALL HUGH E, WEISBECK DENIS

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Drillpipe structures to accommodate downhole testing von WISLER MACMILLIAN M, KOPECKI DENIS S, JOHN HENDRIK

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Drillpipe structures to accommodate downhole testing von Kopecki, Denis S, Wisler, MacMillian M, John, Hendrik

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Well logging system for determining resistivity using multiple transmitter-receiver groups operating at three frequencies von Thompson, Larry W, Wisler, MacMillian M, Wu, Jian-Qun

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Well logging system for determining directional resistivity using multiple transmitter-receiver groups focused with magnetic reluctance material von Thompson, Larry W, Wisler, MacMillian M, Wu, Jian-Qun

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Well logging system for determining resistivity using multiple transmitter-receiver groups operating at three frequencies von WISLER MACMILLIAN M, WU JIAN-QUN, THOMPSON LARRY W

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Well logging system for determining resistivity using multiple transmitter-receiver groups operating at three frequencies and at optimized gain von WISLER MACMILLIAN M, WU JIAN-QUN, THOMPSON LARRY W

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Well logging system for determining directional resistivity using multiple transmitter-receiver groups focused with magnetic reluctance material von WISLER MACMILLIAN M, WU JIAN-QUN, THOMPSON LARRY W

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Method and apparatus for avoiding mutual coupling between receivers in measurement while drilling von BROOKS, ANDREW G, WISLER, MACMILLIAN M, MEYER, JR., WALLACE H, WU, JIAN-QUN, HARRELL, JOHN W, THOMPSON, LARRY W

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