Measuring and testing – Borehole or drilling – Downhole test
Patent
1984-09-28
1987-12-15
Levy, Stewart J.
Measuring and testing
Borehole or drilling
Downhole test
250256, 250270, E21B 4900
Patent
active
047124245
ABSTRACT:
Methods are disclosed which provide for quantifying and characterizing the mineral content of a formation as a function of depth. Elemental data derived from logging tools are input into an element-mineral transform operation, preferably a matrix which is constructed using multivariate statistical analysis on previously available data, to determine the quantity of at least one or more dominant minerals in the formation. From the mineral quantity information and the elemental log data, the formation minerals are further characterized. Information regarding the character and quantities of formation minerals is further used to obtain improved determinations of formation characteristics such as the cation exchange capacity and water saturation, and the grain density and formation porosity, as well as to obtain an increased understanding of the formation such as the depositional environment of the formation. A determination of formation characteristics and an increased understanding of the formation are both vital to production decisions concerning the formation.
REFERENCES:
patent: Re30827 (1981-12-01), Pelet et al.
patent: 3336476 (1967-08-01), Richardson
patent: 3590228 (1971-06-01), Burke
patent: 3930153 (1975-12-01), Scott
patent: 3976878 (1976-08-01), Chavalier et al.
patent: 4055763 (1977-10-01), Antkiw
patent: 4071755 (1978-01-01), Supernaw et al.
patent: 4095102 (1978-06-01), Tixier
patent: 4096385 (1978-06-01), Marett
patent: 4263509 (1981-04-01), Fertl et al.
patent: 4317993 (1982-03-01), Hertzog, Jr. et al.
patent: 4369497 (1983-01-01), Poupon et al.
patent: 4436997 (1984-03-01), Allen
patent: 4446369 (1984-05-01), Givens et al.
patent: 4464569 (1984-08-01), Flaum
patent: 4464930 (1984-08-01), Givens
patent: 4475038 (1984-10-01), Lochmann et al.
patent: 4484470 (1984-11-01), Fertl et al.
patent: 4573354 (1986-03-01), Voorhees et al.
W. C. Savre, Determination of More Accurate Porosity and Mineral Composition in Complex Lithologies with the Use of the Sonic, Neutron, and Density Surveys, Sep. 1963, J. Pet. Tech.
Poupon, A. et al., Log Analysis of Sand-Shale Sequences--A Systematic Approach, J. Pet. Tech., (Jul. 1970, pp. 867-881).
Poupon, A. et al., Log Analysis in Formations with Complex Lithologies, J. Pet. Tech., (Aug. 1971, pp. 995-1005).
Lock, G. et al., Natural Gamma-Ray Spectral Logging, The Log Analyst, (Sep.-Oct. 1971, pp. 3-9).
Roberts, H. et al., The Application of Coriband to the Micaceous Jurassic Sandstones of the Northern North Sea Basin, 3rd Ann. European Formation Eval. Symp., (Oct. 1974).
Tardy, Yves, Element Partition Ratios in Some Sedimentary Environments, Sci. Geol. Bull. 28, 1. (Strasbourg, 1975, pp. 59-95).
Ruckebusch, G., An Application of Kalman Filtering in Nuclear Well Logging, Proc. ICASSP 82, (1982, vol. 3, pp. 1866-1869).
Millhone, R., Completion Fluids for Maximizing Productivity-State of the Art, J. Pet. Tech., (Jan. 1983, pp. 47-55).
Burck, L., A. Review of Log and Core Methods for Determining Cation Exchange Capacity/Qv. Trans. of 8th European Formation Evaluation Sympos., (Mar. 1983, London).
Everett, R., et al., Log Responses and Core Evaluation Case Study Technique Field and Laboratory Procedures, SPWLA 24th Ann. Logging Symp., (Jun. 1983).
Hodgson, M. and Dudney, William L., "Estimation of Clay Proportions in Mixtures by X-Ray Diffraction and Computerized Chemical Mass Balance", Clays and Clay Minerals, vol. 32, No. 1, pp. 19-28, 1984.
Pearson, "Quantitative Clay Mineralogical Analyses from the Bulk Chemistry of Sedimentary Rocks", Clays and Clay Minerals, vol. 26, No. 6, pp. 423-433, 1978.
Gold et al., "Clay Minerals in Mixtures: Sample Preparation, Analysis and Statistical Interpretation", Clays and Clay Minerals, vol. 31, No. 3, 1983, pp. 191-199.
Imbrie, et al., "Mineral Compositions Calculated from Chemical Analyses of Sedimentary Rocks", Journal of Sedimentary Petrology, vol. 29, No. 4, Dec. 1959, pp. 588-595.
Mestdagh, et al., "Iron in Kaolinite: II. The Relationship between Kaolinite Crystallinity and Iron Content", Clay Minerals, vol. 15, 1980, pp. 1-13.
Peveraro et al., "Interpretation of Wireline Log and Core Data from a Mid-Jurassic Sand/Shale Sequence", Clay Minerals, vol. 19, 1984, pp. 483-505.
Miesch, A. T., "Computing Mineral Compositions of Sedimentary Rocks from Chemical Analysis", Journal of Sedimentary Petrology, vol. 32, No. 2, Jun. 1962, pp. 217-225.
Desborough, et al., "Concentration and Mineralogical Residence of Elements in Rich Oil Shales of the Green River Formation, Piceance Creek Basin, Colorado, and the Uinta Basin, Utah-A Preliminary Report", Chemical Geology, vol. 17, 1976, pp. 13-26.
Coker David G.
Gordon David P.
Levy Stewart J.
Oldham Scott M.
Schlumberger Technology Corp.
LandOfFree
Quantitative determination by elemental logging of subsurface fo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quantitative determination by elemental logging of subsurface fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantitative determination by elemental logging of subsurface fo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1212871