The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2011
Filed:
Feb. 12, 2007
James J. Carazzone, Houston, TX (US);
T. Edward Clee, Chappell Hill, TX (US);
James J. Carazzone, Houston, TX (US);
T. Edward Clee, Chappell Hill, TX (US);
ExxonMobil Upstream Research Company, Houston, TX (US);
Abstract
Method for efficient processing of controlled source electromagnetic data, whereby Maxwell's equations are solved [] by numerical techniques [] such as finite difference or finite element in three dimensions for each source location and frequency of interest. The Reciprocity Principle is used [] to reduce the number of computational source positions, and a multi-grid is used [] for the computational grid to minimize the total number of cells yet properly treat the source singularity, which is essential to satisfying the conditions required for applicability of the Reciprocity Principle. An initial global resistivity model [] is Fourier interpolated to the computational multi grids []. In inversion embodiments of the invention, Fourier prolongation is used to update [] the global resistivity model based on optimization results from the multi-grids.