W. Wang1, K. MacPherson1, and M. Thagafy1
Logging while drilling (LWD) resistivity imaging has been applied in water-based mud systems since the early 1990s. These resistivity images are recorded by a rotating electrode (or electrodes) mounted just behind the downhole drilling assembly. The evolution of the current generation of high-resolution LWD resistivity imaging tools, deployed during the last decade, has seen a progressive increase in the along-hole resolution, with today’s highest resolution tools achieving nominal along-hole resolutions of approximately 0.5 in. with full 360° azimuthal borehole wall coverage.
AAPG Search and Discovery Article #90188 ©GEO-2014, 11th Middle East Geosciences Conference and Exhibition, 10-12 March 2014, Manama, Bahrain