Electrical resistivity measurements of brine saturated porous media near reservoir conditions: Awibengkok preliminary results

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Laboratory measurements of the electrical resistivity of rocks and synthetic rocks with confining pressures up to 100 bars and temperatures between 20 and 211 C were performed to further investigate how the pore-size distribution and capillarity affects boiling in porous media. Similar to previous measurements on samples from The Geysers, CA, we observed a gradual increase in resistivity when pore pressure was decreased below the phase-boundary pressure of free water, an indication that boiling is controlled not only by temperature and pressure, but also by pore size distribution. Other important phenomena observed were strong resistance fluctuations during boiling that may … continued below

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Bonner, B.; Duba, A. & Roberts, J. June 28, 1999.

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Laboratory measurements of the electrical resistivity of rocks and synthetic rocks with confining pressures up to 100 bars and temperatures between 20 and 211 C were performed to further investigate how the pore-size distribution and capillarity affects boiling in porous media. Similar to previous measurements on samples from The Geysers, CA, we observed a gradual increase in resistivity when pore pressure was decreased below the phase-boundary pressure of free water, an indication that boiling is controlled not only by temperature and pressure, but also by pore size distribution. Other important phenomena observed were strong resistance fluctuations during boiling that may be chaotic, and salt deposition that caused sample cracking. If confirmed in further experiments, these results may lead to a new geophysical diagnostic for locating boiling in high permeability areas of geothermal reservoirs and for methods of permeability alteration.

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  • Geothermal Resources Council, 1999 Annual Meeting, Reno, NV (US), 10/17/1999--10/20/1999

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  • Report No.: UCRL-JC-134711
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 14470
  • Archival Resource Key: ark:/67531/metadc624035

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  • June 28, 1999

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  • June 16, 2015, 7:43 a.m.

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  • July 8, 2020, 11:13 a.m.

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Bonner, B.; Duba, A. & Roberts, J. Electrical resistivity measurements of brine saturated porous media near reservoir conditions: Awibengkok preliminary results, article, June 28, 1999; California. (https://digital.library.unt.edu/ark:/67531/metadc624035/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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