Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Patent
1997-12-04
2000-09-05
McElheny, Jr., Donald E.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
G06F 1900
Patent
active
061156701
ABSTRACT:
The present invention involves a method for modeling the response of an electromagnetic tool to a subsurface formation including: (i) formulating a set of frequency-domain Maxwell equations, including a Maxwell operator, using a three-dimensional representation of the subsurface formation; (ii) generating a Krylov subspace from inverse powers of the Maxwell operator by computing actions of an inverse of the Maxwell operator; and (iii) repeating (ii) as needed to achieve convergence of a frequency-domain solution that characterizes the modeled response of the electromagnetic tool to the subsurface formation. The invention further involves a related apparatus for modeling the response of an electromagnetic tool to a subsurface formation and a related article of manufacture having a computer program that causes a computer to perform the inventive method.
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Druskin Vladimir L'vovich
Knizhnerman Leonid Aronovich
Lee Ping
Batzer William B.
Garrod David
McElheny Jr. Donald E.
Schlumberger Technology Corporation
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