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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 64 (1980)

Issue: 5. (May)

First Page: 705

Last Page: 705

Title: Geostatistical Approach in Coal Resource Previous HitEstimationNext Hit: ABSTRACT

Author(s): J. H. Fang, T. H. Starks, Joe Mattern

Article Type: Meeting abstract


The conventional reserve/resource Previous HitestimationNext Hit methods (triangular, polygonal, and isopach) are briefly described and then compared against a new geostatistical approach. The comparison is based on estimates using real-world data from southern Illinois. The geostatistical procedure employed is a kriging technique called the intrinsic random functions of order k, using spherical covariance models. While the intrinsic random function approach is usually considered to be a local Previous HitestimationNext Hit procedure, the introduction of sampling methodology allows its extension to global Previous HitestimationTop problems without excessive cost for computation. The major advantages of the geostatistical approach are that it provides a built-in measure of the precision of its estimates, thus allowing the dete mination of confidence limits, and also gives additional insight into the spatial variability of coal seams. The estimates are improved as more geological information of the coal deposits becomes available.

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Copyright 1997 American Association of Petroleum Geologists