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DTEM with short spacing for deep, ahead of the drill bit measurements
DTEM with short spacing for deep, ahead of the drill bit measurements
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机译:DTEM间距短,可在钻头测量之前进行深钻
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摘要
A transmitter on a bottomhole assembly (BHA) is used for generating a transient electromagnetic signal in an earth formation. A processor estimates the distance to a resistivity interface using a signal produced by a receiver on the BHA. The transmitter-receiver distance may be less than 1 m. The estimation of the distance is done in real time using a thin conductive sheet approximation.
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