Applications for a Multiple Depth of Investigation MWD Resistivity Device

$2.00

Jim Oberkircher, George Steinberger,
Ben Robbins, Sperry-Sun Drilling Services

SPWLA 34th Annual Logging Symposium, June 13-16, 1993

1993

Abstract

The recent introduction of a multiple depth of investigation Measurement While Drilling (MWD) resistivity tool has enabled several measurements and observations to be made that have previously not been possible utilizing either wireline or conventional 2 MHz MWD resistivity tools. The new sensor utilizes four transmitter-receiver spacings, which yield eight radial response characteristics; four using the phase-shift derived readings and four utilizing a combined phase/amplitude-attenuation method.

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