Orion True 3D DCIP - Why does it give such high definition?

Abstract

True 3D IP is defined to mean acquisition where the current flow is sampled in multiple directions up to and including orthogonal from a single injection point. To achieve this, orthogonal receiver electrodes must also be used to prevent losing coverage where electrodes might otherwise be null coupled. Using this configuration, Quantec Geoscienceâ??s Orion system has demonstrated far greater geological definition than any conventional configuration including offset IP or multiple 2D lines inverted as a 3D dataset. The reasons for the greater definition lie in several key aspects of the Orion layout including not only the large number of data points recorded but also that these data points are recorded in a true omnidirectional fashion. All receivers on the grid record the response for each current injection. This results in multiple intersecting current paths over the entire survey area. 3D inversions can use the multiple intersecting current paths to create a more geologically realistic inversion model with no acquisition directional bias Results from actual field surveys show this increased definition through a high correlation with drill results.