Computer-based method for while-drilling modeling and...

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science

Reexamination Certificate

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C702S007000

Reexamination Certificate

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11332736

ABSTRACT:
A computer-based method is provided for modeling and visualizing a property of a subterranean earth formation while drilling a borehole therethrough. The computer-based method gathers electromagnetic signals corresponding to a current measurement station location of a measurement-while-drilling tool, and generates a multilayer model corresponding to such electromagnetic signals. A histogram characterizing uncertainty of the multilayer model is used to generate a set of color hue values which represent predictions of the formation property for depth values above/below the tool, and a corresponding set of saturation values (which represent uncertainties for these predictions). A curtain plot is generated and displayed. The curtain plot employs colors to visualize formation property predictions for depth values above/below the tool over successive measurement station locations. A new column of the curtain plot is generated for the current measurement station location. The color values of the new column are based upon the set of color hue values and the set of saturation values derived from the histogram. The saturation levels of the new column represent uncertainties for the corresponding predictions.

REFERENCES:
patent: 5461562 (1995-10-01), Tabanou et al.
patent: 5966672 (1999-10-01), Knupp
patent: 6549854 (2003-04-01), Malinverno et al.
patent: 6594584 (2003-07-01), Omeragic et al.
patent: 6984983 (2006-01-01), Tabanou
patent: 2004/0204859 (2004-10-01), Knobloch
Dahlquist, G. and Bjorck, A., Numerical Methods, Prentice-Hall, Inc. Englewood Cliffs, New Jersey, 1974, Section 7.5, pp. 307-311.
Li et al., “New Directional Electromagnetic Tool for Proactive Geosteering And Accurate Formation Evaluation While Drilling,” SPWLA 46th Annual Logging Symposium, Jun. 26-29, 2005.
Oldenburg, et al., “Estimating depth of investigation in DC resistivity and IP Surveys,” Geophysics, Soc. of Expl. Geophys., vol. 64, No. 2, pp. 403-416, 1999.
Seydoux et al., “A Deep Resistivity Logging-While-Drilling Device for Proactive Geosteering,” The Leading Edge, Jun. 2004, pp. 581-586, 2004.
Tarantola et al., “Generalized Nonlinear Inverse Problems Solved using the Least Squares Criterion,” Reviews of Geophysics and Space Physics, vol. 20, No. 2, pp. 219-232, 1982.
Yang et al., “Bed-Boundary Effect Removal to Aid Formation Resistivity Interpretation from LWD Propagation Measurements at All Dip Angles”, SPWLA 46th Annual Logging Symposium, New Orleans, Jun. 26-29, 2005.
Welch et al., “An Introduction to the Kalman Filter,” Technical Report TR 95-041, Department of Computer Science, University of North Carolina at Chapel Hill, 2002, available at http://www.cs.unc.edu/welch.
Sen et al. “Global optimization methods in Geophysical Inversion,” Elsevier, Amsterdam, 1995, ppl. 83-86.
Press et al. “Numerical Recipes in C: The Art of Scientific Computing,” Cambridge University Press, New York, 2nd Edition, 1992, Section 7.3.
Malinverno et al., “Bayesian Inversion of DC electrical measurements with uncertainties for reservoir monitoring”, Inverse Problems, vol. 16, pp. 1343-1356, 2000.
Malinverno et al. “Expanded uncertainty quantification in inverse problems: Hierarchical Bayes and Empirical Bayes,” Geophys. Soc. of Expl. Geophys., vol. 69, No. 4 pp. 1005-1016, 2004.
Malinverno, A., “Parsimonious Bayesian Markov chain Monte Carlo inversion in a nonlinear geophysical problem”, Geophys. J. Int., vol. 151, pp. 675-688, 2002.
Malinverno, A., “A Bayesian criterion for simplicity in inverse problem parametrization”, Geophys. J. Int., vol. 140, pp. 267-285, 2000.
Tarantola, A., “Inverse Problem Theory and Methods for Model Parameter Estimation”, SIAM 2005, pp. 78-80.
UK Intellectual Property Office, Patents Act 1977: Search Report Under Section 17 for Application No. GB0700589.5 dated Apr. 24, 2007.

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