Summary of the chemical characteristics of the HGP-A well; Puna, Hawaii

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:7369545

Thomas, D M

The HGP-A geothermal well is located on the Lower East Rift Zone of Kilauea Volcano. It was completed in 1976 to a depth of 1966 meters and has a bottomhole temperature of 360/sup 0/C. Evaluation of the chemistry of the fluids produced indicate that recharge to the reservoir discovered by the HGP-A well is largely fresh meteoric water with smaller amounts of seawater recharge. The changes in fluid chemistry during production suggest that at least two separate aquifers are providing fluids to the well and that silica deposition is occurring in the reservoir formation. Isotopic data indicate that the fluid circulation and residence times in the reservoir are relatively short and that the heat source for this part of the rift zone is either very young or relatively large.

• Research Organization: Hawaii Inst. of Geophysics, Honolulu
• OSTI ID: 7369545
• Report Number(s): SGP-TR-60; CONF-821214-44; ON: DE83015865
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150302* -- Geothermal Exploration & Exploration Technology-- Geochemical Techniques & Surveys
152001 -- Geothermal Data & Theory-- Properties of Aqueous Solutions
BRINES
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
GEOCHEMISTRY
GEOLOGIC STRUCTURES
GEOTHERMAL WELLS
GROUND WATER
Geothermal Legacy
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
KILAUEA VOLCANO
METEORIC WATER
OXYGEN COMPOUNDS
RECHARGE
RIFT ZONES
SAMPLING
SEAWATER
VOLCANOES
WATER
WATER CHEMISTRY
WELLS