HIGP Miscellaneous Documents

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    Geothermal resources of Hawaii
    (Hawaii Institute of Geophysics, University of Hawaii, 1983) Hawaii Institute of Geophysics, University of Hawaii at Manoa
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    A conceptual model of shallow groundwater flow within the lower east rift zone of Kilauea Volcano, Hawaii
    (University of Hawaii at Manoa, 1995-05) Novak, Elizabeth A.
    The discovery, development, and production of geothermal energy within the lower east rift zone (LERZ) of Kilauea volcano has been the impetus for development of models of shallow groundwater flow within the LERZ. During the last twenty years several models have been proposed. Each has drawn upon the preceding model, and has refined and improved upon it as new data became available. The purpose of this thesis research is to again refine the conceptual model of LERZ shallow groundwater flow using data from newly drilled wells and a data set acquired through continuous weIl monitoring, an approach which has not previously been used in the LERZ. The objectives of this research are twofold; first, the conceptual model will characterize the shallow unconfined aquifer present within the LERZ and lower south flank (LSF) in its natural state of dynamic equilibrium. Second, with commercial geothermal production beginning in this area, the data contained in this thesis will be used as a baseline to asses the impact, if any, of production and reinjection of geothermal fluids on the shallow LERZ groundwater aquifer. This research utilizes geochemical analyses from several recently drilled LERZ wells, as well as temperature, pressure, and conductivity data acquired through continuous monitoring of five wells on the lower north flank (LNF), LERZ, and the LSF of Kilauea. These data are used to characterize water level, temperature, and conductivity responses to recharge events; develop transmissivity and hydraulic conductivity values for the LNF, LERZ, and LSF; delineate groundwater flow paths within the LERZ; establish the percentage of geothermal fluid mixed with groundwater in various LERZ wells; estimate the temperature of the reservoir or reservoirs from which this geothermal fluid is derived; and identify the origin of their thermal fluids as either fresh or salt water.
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    Minearalogical assessment of reservoir fluid conditions, SOH geothermal drill holes
    (Hawaii Institute of Geophysics, University of Hawaii at Manoa, [n.d.]) Sykes, Martha L.
    "The purpose of this proposed research is to provide some preliminary answers to these questions, by the mineralogical, geochemical, and textural assessment of the State of Hawaii (SOH) drill holes 4, 2 and 1, as an aid to reservoir engineering assessment. A detailed knowledge of alteration mineral assemblages, their distribution and chemistry is essential for any future assessments of fluid-rock interactions in these drill holes."
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    Modeling hydrogeology and geothermal energy in the Kilauea East Rift Zone, Hawaii : a preproposal
    ( 1991-10)
    "To assist in providing the above-described information on the Kilauea ERZ hydrogeology, this proposal includes the following objectives: 1. To evaluate the overall hydrologic and hydraulic nature of the geothermal reservoir system, including : (a) Nature and distribution of the fluid flow system; is it dominated by continuum, fracture, or combination continuum-fracture flow? (b) Nature and extent of system boundaries including external and internal boundaries (c) Recharge sources and amounts (d) Reservoir parameters such as hydraulic conductivity, porosity, storativity, etc. 2. To evaluate the impact of re-injection of fluids on the geothermal reservoir and on the shallow fresh groundwater aquifer. 3. To evaluate the overall hydrologic nature and extent of the shallow fresh water aquifer and its interaction with the underlying geothermal reservoir."
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    A proposal for the chemical and mineralogical characterization of SOH cores
    ([s.n.], [n.d.]) Sinton, John ; Hulsebosch, Thomas P.
    "We propose to provide chemical analyses and petrographic descriptions of selected samples from State of Hawaii Scientific Observation Holes 1, 2 and 4."