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Porosity of natural fracture networks

Description/Abstract

Volumetric imaging is used to determine the three-dimensional topology of natural fracture networks in coal subjected to reservoir conditions. Computerized X-ray tomographic data and bulk porosity measurements are combined with image processing techniques to quantify the porosity distribution of three-dimensional fracture networks in two coal cores. Under in-situ conditions, the porosity of the fracture networks in the cores is less than one-tenth of a percent. In addition, the porosity varies by {+-}10% over depth intervals of approximately 16 mm. 11 refs., 4 figs., 3 tabs.
Authors: Montemagno, C.D. [Argonne National Lab., IL (United States)]; Pyrak-Nolte, L.J. [Univ. of Notre Dame, IN (United States)]
Publication Date:1995 Jun 01
OSTI Identifier: 150492
Resource Type:Journal Article
Resource Relation:Journal Name: Geophysical Research Letters; Journal Volume: 22; Journal Issue: 11; Other Information: PBD: 1 Jun 1995
Country of Publication:United States
Language:English
Format: Size: pp. 1397-1400
Other Number(s):Journal ID: GPRLAJ; ISSN 0094-8276; Other: CNN: Contract 5092-260-2507; TRN: 95:005687-0008
Subject:02 PETROLEUM ;03 NATURAL GAS ;15 GEOTHERMAL ENERGY; COAL; GEOLOGIC FRACTURES; POROSITY; RESERVOIR ROCK; COMPUTERIZED TOMOGRAPHY; IMAGE PROCESSING
Update Date:2009 Dec 16

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DOI http://dx.doi.org/10.1029/95GL01098

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