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Method and apparatus for estimating formation properties using transient electromagnetic measurements while drilling
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Fast inversion of MWD transient EM data excited by a pulse of an arbitrary shape
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Formation resistivity imager with reduced leakage to mandrel
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Inversion-Based Method to Correct for the Pipe Residual Signal in Transient MWD Measurements
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US2013013210A1
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Electrical imager operating in oil-based mud and low resistive formation
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DTEM with short spacing for deep, ahead of the drill bit measurements
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Three-coil system with short nonconductive inserts for transient MWD resistivity measurements
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TDEM forward focusing system for downhole use
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Method and apparatus for galvanic multi-frequency formation resistivity imaging
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Deep MWD resistivity measurements using EM shielding
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Method and apparatus for borehole wall resistivity imaging with full circumferential coverage
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US2009240435A1
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Method and apparatus for eliminating drill effect in pulse induction measurements
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