Geostatistical Projects,
Case Studies, and Publications
Projects
Geostatistical methods have been used at the WVGES for 20 years to compute risk-qualified estimates of natural
resources. We use variography, kriging, and conditional simulation in the following areas:
- Coal
- Coal quality, including ash fusion temperature, percent sulfur, and percent ash
- Coal-bed thickness
- Oil and Gas
- Initial potential, and cumulative production of oil and gas
- Mapping "probability of success" from spatial pattern of completed wells and dry penetrations
In cooperation with the USDA Forest Service, geostatistical methods have been used in spatial analysis of forest insect pests such as the gypsy moth.
Case Studies
- Geostatistical Analysis of Libyan Clastic Thickness describes application of data declustering,
the normal score transform and backtransform, sequential Gaussian simulation,
and confidence envelopes from kriging and simulation.
- Text of case study (PDF file; 2,447 KB)
- Thickness of Paleocene Clastics in Libya: appb.exe (39 KB); appb.txt (1 KB)
- Collocated Cosimulation of Permeability describes a way to use ancillary data such as initial
potential (production) to compute realizations of an undersampled variable such as permeability.
- Text of case study (PDF file; 1,620 KB)
- Permeability Data: gccorp03.exe (39 KB); gccorp03.eas (1 KB)
- Oil Initial Potential Data: gcsurfoip.exe (41 KB); gcsurfoip.eas (9 KB)
Representative Publications
- Geostatistics and Petroleum Geology, by M.E. Hohn
- Datasets available for downloading
- About this book (From the Preface)
- Link to the publisher: Kluwer Academic Publishers
- Geostatistical Analysis of Oil Production and Potential using Indicator Kriging, by M.E. Hohn and R.R. McDowell, 1995,
in Stochastic Modeling and Geostatistics (J.M. Yarus and R.L. Chambers, Eds.), AAPG, Tulsa, p. 121-130.
- Explanation of dataset grprd5.eas (PDF file; 1,938 KB)
- Oil cumulative production data from Granny Creek Field, WV: grprd5.exe (43 KB); grprd5.eas (17 KB)
- Explanation of dataset gcsurfoip.eas (PDF file; 1,269 KB)
- Oil initial potential data from Granny Creek Field, WV: gcsurfoip.exe (41 KB); gcsurfoip.eas (9 KB)
- Stochastic simulation of coal bed thickness and economic decision-making,
by M.E. Hohn and R. R. McDowell, 2001, in D. F. Merriam and J. C. Davis, eds., Geologic Modeling and Simulation: Sedimentary Systems,
Kluwer Academic/Plenum Publishers, New York, p. 271-283.
- Explanation of datasets (PDF file; 3,877 KB)
- Coal thickness data: eagpow.exe (51 KB); eagpow.eas (33 KB)
- One simulated realization: eagpown.exe (492 KB); eagpown.sim (2,849 KB)
- Masking file: eagexists.exe (51 KB); eagexists.txt (1,342 KB)
- A statistical evaluation of non-ergodic variogram estimators,
by F. C. Curriero, M.E.Hohn, A.M. Liebhold, and S.R. Lele, 2002, Environmental and Ecological Statistics, v. 9, no. 1, p. 89-110.
Additional Data
Page last revised: December 7, 2004
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