.... In this paper, we associate the differences in resistivity response for varying formation properties to the tool physics, vertical resolution, depth of investigation, and time after bit between the measurements. In the sands, a resistivity inversion was applied to correct the logs for invasion effects...

... drilling-induced fractures. orientation Upstream Oil & Gas Yamamoto underground research program reservoir geomechanics regime basin borehole investigation investigation Reservoir Characterization 21st formation evaluation symposium japan atomic energy agency Drilling pore pressure...