| Title | ELECTRICAL PROPERTIES OF GEOTHERMAL RESERVOIR ROCKS AS INDICATORS OF POROSITY DISTRIBUTION |
|---|---|
| Authors | Al Duba, Jeff Roberts, Brian Bonner |
| Year | 1997 |
| Conference | Stanford Geothermal Workshop |
| Keywords | |
| Abstract | Measurements of the electrical resistivity of metashales from borehole SB-15-D in The Geysers geothermal area at a variety of conditions in the laboratory provide information regarding the distribution of porosity as interpreted from observations of boiling as downstream pore-pressure or confining pressure is decreased at constant temperature, or as temperature is increased at constant downstream pore-pressure. Electrical resistivity measurements on core, with and without pore-pressure control, to confining pressures up to 100 bars and temperatures between 20 and 150?C allow assessment of the separate and combined effects of confining pressure, pore pressure and temperature for rocks from this borehole. |