A perturbation expansion approach to solving the electromagnetic induction problem in three dimensions.

Tobin, Harold (New Mexico Tech, Socorro, NM) ; Natek, Nancy H. ; Weiss, Chester Joseph

Sandia National Laboratories

关键词: Hydrocarbons;    Maxwell Equations;    02 Petroleum;    Dimensions;    Source Terms;   

DOI  :  10.2172/918368
RP-ID  :  SAND2003-3161
RP-ID  :  AC04-94AL85000
RP-ID  :  918368

美国|英语

来源: UNT Digital Library

【 摘 要 】

We address the electromagnetic induction problem for fully 3D geologic media and present a solution to the governing Maxwell equations based on a power series expansion. The coefficients in the series are computed using the adjoint method assuming an underlying homogeneous reference model. These solutions are available analytically for point dipole source terms and lead to rapid calculation of the expansion coefficients. First order solutions are presented for a model study in petroleum geophysics composed of a multi-component induction sonde proximal to a fault within a compartmentalized hydrocarbon reservoir.