The Effects of Pore Pressure and Confining Pressure on Pore and Bulk Volume Compressibilities of Consolidated Sandstones

RW Zimmerman; JL Haraden; WH Somerton

doi:10.1520/STP32828S

SYMPOSIA PAPER Published: 01 January 1985

STP32828S

The Effects of Pore Pressure and Confining Pressure on Pore and Bulk Volume Compressibilities of Consolidated Sandstones

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A computer-controlled system has been devised that allows measurement of pore and bulk compressibilities of porous rocks over a full range of pore and confining pressures. Pore compressibilities have been measured for Bandera, Boise, and Berea sandstones. It is shown from these data that the pore compressibilities of these sandstones are functions of the difference between the confining pressure and the pore pressure. A simple physical explanation for this behavior is then given in terms of the closure of very fine microcracks in the rock.

Author Information

Zimmerman, RW

University of California, Berkeley, CA

Haraden, JL

University of California, Berkeley, CA

Somerton, WH

University of California, Berkeley, CA

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Details

Developed by Committee: D18

Pages: 24–36

DOI: 10.1520/STP32828S

ISBN-EB: 978-0-8031-4934-2

ISBN-13: 978-0-8031-0237-8

The Effects of Pore Pressure and Confining Pressure on Pore and Bulk Volume Compressibilities of Consolidated Sandstones

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