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North L.J.,UK National Oceanography Center | Best A.I.,UK National Oceanography Center | Sothcott J.,UK National Oceanography Center | MacGregor L.,OHM Rock Solid Images
73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011 | Year: 2011

We describe a novel high pressure Electrical Impedance Tomography (EIT) system capable of resolving 3D resistivity distributions within laboratory core samples at representative burial pressures. The system is also capable of measuring the full 3D resistivity tensor from a single sample using a newly developed and efficient diffemorphic finite element technique. We present results on a microbially laminated dolo-mudstone reservoir analogue from the Middle Triassic Rottweil-Formation of the South German Basin and show that what at first appears to be electrical heterogeneity is in fact the result of anisotropy caused by a parallel tubular microstructure.

Ramananjaona C.J.,OHM Rock Solid Images | MacGregor L.M.,OHM Rock Solid Images
72nd European Association of Geoscientists and Engineers Conference and Exhibition 2010: A New Spring for Geoscience. Incorporating SPE EUROPEC 2010 | Year: 2010

An example of 2D interpretation of marine CSEM survey data is presented. Following the conclusion of initial 1D modelling of the response measured in line with the source dipole, it is shown that assuming vertical anisotropy of the 2D earth model improves the inversion results signigicantly compared to the isotropic assumption. © 2010, European Association of Geoscientists and Engineers.

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