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:
May. 25, 2010
Filed:
May. 31, 2007
Laurent Sirgue, Houston, TX (US);
John T. Etgen, Houston, TX (US);
Uwe Albertin, Houston, TX (US);
Sverre Brandsberg-dahl, Houston, TX (US);
Laurent Sirgue, Houston, TX (US);
John T. Etgen, Houston, TX (US);
Uwe Albertin, Houston, TX (US);
Sverre Brandsberg-Dahl, Houston, TX (US);
BP Corporation North America Inc., Warrenville, IL (US);
Abstract
According to a first preferred aspect of the instant invention, there is provided an efficient method of computing a 3D frequency domain waveform inversion based on 3D time domain modeling. In the preferred arrangement, 3D frequency domain wavefields are computed using 3D time-domain modeling and a discrete Fourier transformation that is preferably computed 'on the fly' instead of solving the large systems of linear equations that have traditionally been required by direct frequency domain modeling. The instant invention makes use of the theory of gradient-based waveform inversion that estimates model parameters (for example velocities) by matching modeled data to field data sets. Preferably the modeled data are calculated using a forward modeling algorithm.