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- North America > United States > California (1.00)
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- Geology > Structural Geology > Tectonics > Plate Tectonics (1.00)
- Geology > Rock Type (1.00)
- Geology > Mineral (1.00)
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- Geophysics > Gravity Surveying (1.00)
- Geophysics > Borehole Geophysics (1.00)
- Geophysics > Seismic Surveying > Passive Seismic Surveying (0.92)
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- Materials > Metals & Mining (1.00)
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- Government > Regional Government > North America Government > United States Government (1.00)
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- North America > United States > Nevada > Dixie Valley Field (0.99)
- North America > United States > California > Mayacamas Mountains > Geysers Field (0.99)
- North America > Trinidad and Tobago > Trinidad > Southern Basin (0.99)
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- Information Technology > Modeling & Simulation (0.92)
- Information Technology > Communications > Collaboration (0.40)
- North America > United States > California (1.00)
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- Asia (1.00)
- North America > United States > Texas (0.93)
- Geology > Structural Geology > Tectonics > Plate Tectonics (1.00)
- Geology > Rock Type (1.00)
- Geology > Mineral (1.00)
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- Geophysics > Gravity Surveying (1.00)
- Geophysics > Borehole Geophysics (1.00)
- Geophysics > Seismic Surveying > Passive Seismic Surveying (0.92)
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- Energy > Renewable > Geothermal > Geothermal Resource (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- Government > Regional Government > North America Government > United States Government (0.93)
- Energy > Renewable > Geothermal > Geothermal Surface Facility > Flash Steam Power Plant (0.46)
- North America > United States > Nevada > Dixie Valley Field (0.99)
- North America > United States > California > Mayacamas Mountains > Geysers Field (0.99)
- North America > Trinidad and Tobago > Trinidad > Southern Basin (0.99)
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- Information Technology > Modeling & Simulation (0.92)
- Information Technology > Communications > Collaboration (0.40)
Abstract The U.S. Dept. of the Interior, Bureau of Mines, has designed and tested an isokinetic sampling probe for use in studying the hydrodynamic, thermodynamic, chemical, and physical properties of geobrines. This work was conducted as a part of the Bureau's mission to ensure an adequate supply of minerals to meet national economic and strategic needs. The probe consists of a sampling tube for obtaining the fluid sample and two probe consists of a sampling tube for obtaining the fluid sample and two pressure sensing tubes for use in controlling hydrodynamic conditions at pressure sensing tubes for use in controlling hydrodynamic conditions at the entrance to the sampling tube. The three tubes form the basic probe unit and can be mounted on brine processing equipment and pipelines as either a fixed- or an adjustable-position probe. The isokinetic technique, involving sampling at a rate governed by the pressures in the two sensing tubes, is useful specifically for sampling pressures in the two sensing tubes, is useful specifically for sampling two-phase fluids. Samples so obtained are reproducible and representative of the fluid being sampled. The probe proved capable of examining two-phase flows of widely ranging fluid properties at the Bureau of Mines.
- Energy > Oil & Gas > Upstream (1.00)
- Government > Regional Government > North America Government > United States Government (0.46)
Characterizing geothermal reservoirs draws on techniques common to petroleum reservoirs. Key differences create special challenges to gaining a good understanding of geothermal reservoirs. This article covers appropriate approaches and caveats for well testing, drawdown/buildup analyses and decline curve analysis for characterizing geothermal reservoirs. Geothermal well testing is similar in many respects to transient pressure testing of oil/gas wells, with some significant differences. Many geothermal wells induce boiling in the near-well reservoir, giving rise to temperature transients as well as pressure transients. Substantial phase change may also take place in the well, further complicating analysis. Pressure tools must be kept in a high-temperature environment for long periods of time, and production intervals are frequently very small portions of overall well depth. Production intervals, which are usually associated with fracture zones, may be at substantially different thermodynamic conditions.
- Energy > Renewable > Geothermal > Geothermal Resource (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
More recently, issues such as sorptivity and volatility have been recognized as equally relevant characteristics that influence analysis.[13] Tracer tests have been conducted for over 25 years in geothermal fields, including early work in: * New Zealand[14] * The Geysers in Northern California[9] * Lardarello in Italy[15] * Various Japanese fields[16] In the last decade, more than 50 tracer tests have been conducted worldwide in geothermal fields.
- Energy > Renewable > Geothermal > Geothermal Resource (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)