Chemical Logging, a Geothermal Technique
- Key words
- Brine Technology; Chemistry; Reservoir Evaluation; USA; Idaho; Raft River; Hot Water Zones; Lithologic Log; Calcium Alkalinity Logs; Hot Water Entries; Well Logging; Aquifers; Correlation; Neutron Logs; Chemical Logging; Caliper Logs; Production Logs; US
- Location
- Raft River, Idaho
- Conference
- Geothermal Resources Council Transactions
- Year
- 1979
- Session
- Exploration; Geochemical surveys; Well logging
- Language
- English
Abstract
Chemical logging studies conducted at the Department of Energy's Raft River Geothermal Test Site in south central Idaho resulted in the development of a technique to assist in geothermal well drilling and resource development. Calcium-alkalinity ratios plotted versus drill depth assisted in defining warm and hot water aquifers. Correlations between the calcium-alkalinity log and lithologic logs were used to determine aquifer types and detection of hot water zones 15-120 m before drill penetration. INEL-1 at the Idaho National Engineering Laboratory site in eastern Idaho represents the second area where this was applied. Calcium-alkalinity ratio, lithologic, and compensated neutron logs correlated well and were used to define the water-producing zones penetrated by the well. This well is located in an area of different geologic and hydrologic characteristics.
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