ISSN:
1573-0956
Keywords:
Crystalline rocks
;
equivalent channel model
;
hydrostatic pressure
;
permeability
;
resistivity formation factor
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
,
Physics
Notes:
Abstract Transport properties (permeability and electrical conductivity) have been measured at different hydrostatic pressure runs on 7 crystalline rocks (gneisses and amphibolites) sampled from the KTB drilling project. The decrease of permeability by pressure are compared with the pressure-dependent data of the electrical conductivity (formation factor) resulting from complex impedance measurements. According to the equivalent-channel model (ECM), there exists a linear relationship between these parameters by representing both properties on logarithmic scales. The results show that it is possible to extrapolate high-pressure permeability from low-pressure (〈 60 MPa) permeability data by using the pressure-dependent electrical conductivity (up to 300 MPa).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00682712
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