NUMERICAL MODELING TO ASSESS THE IMPACT OF POSITIONAL ERRORS DURING THE ACQUISITION OF WATERBORNE CONTINUOUS RESISTIVITY MEASUREMENTS

Waterborne continuous resistivity profiling (WCRP) permits rapid collection of direct current (DC) resistivity data over water by means of towing a multi-electrode cable streamer behind a moving vessel. During WCRP electrical current is injected using a pair of electrodes, while multiple potential measurements are made using other pairs of electrodes. This acquisition results in a near continuous profile of measured resistances along the survey path. These data are then processed/inverted to produce a 2.5D resistivity model, which can be used to interpret physical subsurface properties (i.e. lithology, and pore fluid conductivity).