Hydrochemistry of selected parameters at the Raft River KGRA, Cassia County, Idaho

Technical Report · Thu Jan 01 04:00:00 EST 1981

DOI:https://doi.org/10.2172/5449572· OSTI ID:5449572

Graham, D L; Ralston, D R; Allman, D W

Low to moderate temperature (< 150/sup 0/C) geothermal fluids are being developed in the southern Raft River Valley of Idaho. Five deep geothermal wells ranging in depth from 4911 feet to 6543 feet (1490 to 1980 meters) and two intermediate depth (3858 feet or 1170 meters) injection wells have been drilled within the Raft River KGRA. Several shallower (1423-500 feet or 430-150 meters) wells have also been constructed to monitor the environmental effects of geothermal development of the shallower aquifer systems. Sampling of water from wells within the KGRA has been conducted since the onset of the project in 1974. Five analytical laboratories have conducted analyses on waters from the KGRA. Charge-balance error calculations conducted on the data produced from these laboratories indicated that data from three laboratories were reliable while two were not. A method of equating all data was established by using linear regression analyses on sets of paired data from various laboratories. The chemical data collected from the deep geothermal wells indicates that a two reservoir system exists within the Raft River KGRA. Each reservoir is associated with a major structural feature. These features are known as the Bridge Fault System (BFS) and the Narrows Structure (NS).

• Research Organization: Idaho Univ., Moscow (USA). Coll. of Mines and Earth Resources
• DOE Contract Number: AS07-76ID01638
• OSTI ID: 5449572
• Report Number(s): DOE/ID/01638-1; ON: DE82014286
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150201* -- Geology &amp; Hydrology of Geothermal Systems-- USA-- (-1989)
150302 -- Geothermal Exploration &amp; Exploration Technology-- Geochemical Techniques &amp; Surveys
AQUIFERS
CHEMISTRY
FEDERAL REGION X
FLUIDS
GEOCHEMISTRY
GEOLOGIC FAULTS
GEOLOGIC STRUCTURES
GEOLOGY
GEOTHERMAL FLUIDS
GEOTHERMAL WELLS
Geothermal Legacy
HYDROLOGY
IDAHO
INJECTION WELLS
KGRA
NORTH AMERICA
RAFT RIVER VALLEY
SAMPLING
USA
WELLS