Title:
SIMULTANEOUS RESOLUTION ENHANCEMENT AND DIP CORRECTION OF RESISTIVITY LOGS THROUGH NONLINEAR ITERATIVE DECONVOLUTION
Document Type and Number:
WIPO Patent Application WO2004027682
Kind Code:
A3
Abstract:
A nonlinear iterative deconvolution method and system. In one embodiment, the system comprises a data acquisition module, a storage module, and a processing module. The data acquisition module obtains logging data from measurements made by a sensor tool moving through a borehole, and stores the logging data in the storage module. The processing module processes the logging data to determine a formation model by iteratively updating a set of formation model values which correspond to a set of positions along the borehole. The iterative updating includes (i) calculating an error value; and (ii) applying a linearizing factor to the error value. The iterative updating may be expressible as a weighted sum of a current formation model value with a product of the error value and the linearizing factor. The iterative updating may continue until an adequate match between the logging data and a calculated tool response is achieved.
Inventors:
BITTAR MICHAEL S
HU GUOYU
HU GUOYU
Application Number:
PCT/US2003/029082
Publication Date:
May 06, 2004
Filing Date:
September 16, 2003
Export Citation:
Assignee:
HALLIBURTON ENERGY SERV INC (US)
International Classes:
G01V3/38; (IPC1-7): G06F19/00
Foreign References:
| US6047240A | 2000-04-04 | |||
| US6304086B1 | 2001-10-16 | |||
| US6611762B1 | 2003-08-26 | |||
| US6606565B1 | 2003-08-12 | |||
| US6502036B2 | 2002-12-31 | |||
| US5184079A | 1993-02-02 |
Other References:
See also references of EP 1546980A4
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