Laboratory measurements of ultralow permeability of geologic materials

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1137142· OSTI ID:59256

Trimmer, D

A new apparatus is described for determining permeability (water) in geologic materials as a function of confining pressure (to 200 MPa), pore pressure (to 25 MPa), and deviatoric stress (500--800 MPa). The samples are relatively large (0.15 m diameter x 0.28 m long) and may be intact or contain a single through-going fracture. Permeabilities of 10{sup -11}--10{sup -24} m{sup 2} (10--10{sup -12} D) may be measured, simultaneously, with electrical conductivity and acoustic velocity and amplitude. Crack closure is also monitored for the fractured samples. All experimental control and data-acquistion functions are performd by a microcomputer. A discussion of data-analysis techniques and typical data are also presented.

• Research Organization: Earth Science Division, University of California, Lawrence Livermore National Laboratory, Livermore, California 94550
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 59256
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 53; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
CONTROL
CRACKS
DATA ACQUISITION
DATA ANALYSIS
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
FRACTURES
GEOLOGY
MICROPROCESSORS
PERMEABILITY
PRESSURE DEPENDENCE
ROCKS
SOUND WAVES
VELOCITY
VERY HIGH PRESSURE
WATER
Yucca Mountain Project