Boots – shoes – and leggings
Patent
1994-06-21
1995-10-24
Huntley, David M.
Boots, shoes, and leggings
E21B 4900, G06F 1700
Patent
active
054615623
ABSTRACT:
A new interpretation system receives a low resolution log and a high resolution log from a well logging tool that is disposed in a wellbore which traverses a highly laminated formation and generates an output record medium which clearly illustrates and quantifies each layer of the plurality of layers of the laminated formation. In response to receipt of the low and high resolution logs, the new interpretation system generates a rectangular deconvolved log. The rectangular deconvolved log is generated by first selecting a plurality of modes or possible formation types from a histogram. Each of the plurality of modes are then solved, in a least squares sense, by minimizing the sum, over a particular depth interval in the wellbore, of the square of the residual between the tool measurement and the reconstructed log, a calculation which is equivalent to solving a system of N equations and N unknowns. A basis function is determined for each mode, and the rectangular deconvolved log is defined to be the sum of the basis function for each mode multiplied by the calculated value of the associated mode derived from the solution of the N equations and N unknowns. The rectangular deconvolved log is subsequently convolved with a vertical response function of the well logging tool thereby producing a reconstructed log. The reconstructed log undergoes interactive refinement producing a refined rectangular deconvolved log. If no further refinement is needed, a volumetric analysis is performed on the refined rectangular deconvolved log to produce an output record medium which clearly illustrates and quantifies each layer of the plurality of layers of the laminated formation traversed by the wellbore.
REFERENCES:
patent: 3166709 (1965-01-01), Doll
patent: 4440020 (1984-04-01), Boutemy et al.
patent: 4482959 (1984-11-01), Minne
patent: 4484278 (1984-11-01), Edmundson
patent: 4486836 (1984-12-01), Lacour-Gayet
patent: 4535625 (1985-08-01), Lyle, Jr.
patent: 4604581 (1986-08-01), Thadani et al.
patent: 4646240 (1987-02-01), Serra et al.
patent: 4648268 (1987-03-01), Grosjean
patent: 4794792 (1989-01-01), Flaum et al.
patent: 4873488 (1989-10-01), Barber et al.
Bilsland, M., Mobed, R. and Cheruvier, E., "Predicting Hydrocarbon Saturations in Thin Sandstones Drilled with Oil-Based Mud", SAID Paris, Oct. 24-25-26, 1989.
Brochure--"Become a Wizard of Well Log Interpretation", ELAN System by Schlumberger, date unknown.
Brochure--"Layered Reservoir Testing", Schlumberger, date unknown.
Brochure--"Formation Microscanner" (FMS), Schlumberger, Apr. 1986.
Brochure--"Rock Star"--Schlumberger's Geocolumn Service, Schlumberger, date unknown.
Brochure--"Three Powerful Products to Help Solve Your Geological Puzzle"--Geocolumn, Syndip, Stratim, Schlumberger, date unknown.
Brochure--"Faciolog", Sclumberger, date unknown.
Brochure--"Faciolog--Computer Processed Electrofacies Analysis", dated Jun. 1982, Schlumberger.
Poupon, A., Log, M. E., and Tizier, M., "A Contribution to Electrical Log Intrepretation in Shaly Sands", Trans, AIME 1954 vol. 201, pp.138-145.
Allen, D. F., "Laminated Sand Analysis", SPWLA 25th Annual Logging Symposium, 1984, pp. 1-20.
Suau, J., et al., "Intrepretation of Very Thin Gas Sands in Italy", SPWLA 25th Symposium, 1984, pp. 1-22.
Barber, T., "Induction Vertical Resolution Enhancement-Physics and Limitations", Trans., 1988 SPWLA, San Antonio, pp. 1-18.
Galford, J. E., Flaum, C., Gilchrist, W. A. and Duckett, S. W., "Enhanced Resolution Processing of Compensated Neutron Logs", paper SPE 15541, 1986, New Orleans, pp. 1-18.
Flaum, C. and Galford, J. E., "Enhanced Vertical Resolution Processing of Dual Detector Gamma-Gamma Density Logs", SPWLA 1987, 28th Annual Logging Symposium, pp. 1-25.
Quirein, J., Kimminau, S., LaVigne, J. and Wendel, F., "A Coherent Framework for Developing and Applying Multiple Formation Evaluation Models", SPWLA, date unknown.
Mayer, C. and Sibbit, A., "Global, A New Approach to Computer-Processed Log Intrepretation", paper SPE 9341, 1980, pp. 1-20.
Ekstrom, M. P., Dahan, D., Rossi, D., "Formation Imaging with Microelectrical Scanning Arrays", Log Analyst, No. 3, pp. 294-306, Jun. 1987.
Trouiller, J. C. and Delhomme, J. P., "Thin-Bed Reservoir Analysis from Borehole Electrical Images", paper SPE 19578, Oct. 1989.
Andreani, M., "Quantitative Evaluation of Highly Laminated, Complex Lithology Formations", paper SPE 17944, Mar. 1989.
Wolff, M. and Pelissier-Combescure, J., "Faciolog--Automatic Electrofacies Determination", paper SPE 1982, pp. 1-23.
Delfiner, P. C., Peyret, O. and Serra, O., "Automatic Determination of Lithology from Well Logs", paper SPE 13290, 1984, pp. 1-7.
Barber, T., "Introduction to the Phasor Dual Induction Tool", JPT, 1985, Sep., pp. 1699-1706.
Freedman, R. and Minerbo, G., "Maximum Entropy Inversion of Induction-Log Data", paper SPE Formation Evaluation, Jun. 1991, pp. 259-268.
Antoine J. N.
Tabanou Jacques R.
Bouchard John H.
Garrana Henry N.
Huntley David M.
Schlumberger Technology Corporation
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