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Title: Porosity of natural fracture networks

Porosity of natural fracture networks 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: ;
Publication Date:
OSTI Identifier:OSTI ID: 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
Subject: 02 PETROLEUM; 03 NATURAL GAS; 15 GEOTHERMAL ENERGY; COAL; GEOLOGIC FRACTURES; POROSITY; RESERVOIR ROCK; COMPUTERIZED TOMOGRAPHY; IMAGE PROCESSING