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Abstract

Characterization of fractured rock presents unique inversion challenges in electrical resistivity imaging (ERI). The standard, smoothness-constrained inversion assumptions cannot adequately account for discrete fractures. Similarly, a borehole boundary is a sharp physical contrast and is often a conductive conduit that is typically not adequately incorporated into the inversion. We conducted synthetic studies to examine alternative ERI model parameterization approaches to better represent a fractured rock setting. An unstructured tetrahedral mesh was used for the forward modeling in order to optimize flexibility in the incorporation of boreholes and known fracture locations. Modeling such small-scale features at the plot scale resulted in a finite element mesh with a large number of tetrahedral elements.

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/content/papers/10.3997/2214-4609-pdb.329.146
2012-03-25
2021-12-08
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609-pdb.329.146
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