Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Patent
1997-03-04
1999-03-02
McElheny, Jr., Donald E.
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
G06F 1900
Patent
active
058783725
ABSTRACT:
A method of determining a plurality of formation models each of which will simulate the response of a well logging instrument. A measured response of the well logging instrument is used to generate an initial model using inversion processing. A response of the instrument to the initial model is synthesized. A singular value decomposition is performed on the synthetic response to generate eigenparameters of the initial model. Eigenparameters having the least significant overall contribution to the synthetic response are sequentially substituted with linear equations representing prior constraints on the initial earth model. A linear system, including the remaining ones of the eigenparameters and the linear equations is solved so that the eigenparameters are preserved exactly and the linear equations satisfy a least squares fit. An additional synthetic instrument response is generated for each solution to the linear system which falls below a predetermined error threshold. The additional instrument responses are compared with the synthesized response to the initial model. The one of the solutions to the linear system which represents an earth model providing minimum misfit with respect to equations representing the prior constraints is selected as the best fit model.
REFERENCES:
patent: 5798982 (1998-08-01), He et al.
Rabinovich Michael B.
Tabarovsky Leonty A.
Fagin Richard A.
McElheny Jr. Donald E.
Western Atlas International Inc.
LandOfFree
Method for simultaneous inversion processing of well log data us does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for simultaneous inversion processing of well log data us, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for simultaneous inversion processing of well log data us will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-433132