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Quantitative analysis of the hydrothermal system in Lassen Volcanic National Park and Lassen Known Geothermal Resource Area

Description: The Lassen hydrothermal system is in the southern Cascade Range, approximately 70 kilometers east-southeast of Redding, California. The conceptual model of the Lassen system is termed a liquid-dominated hydrothermal system with a parasitic vapor-dominated zone. The essential feature of this model is that steam and steam-heated discharge at relatively high elevations in Lassen Volcanic National Park (LVNP) and liquid discharge with high chloride concentrations at relatively low elevations outsid… more
Date: January 1, 1984
Creator: Sorey, M.L. & Ingebritsen, S.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Retrospective examination of geothermal environmental assessments

Description: Since 1976, the Department of Energy (DOE) has supported a variety of programs and projects dealing with the exploration, development, and utilization of geothermal energy. This report presents an overview of the environmental impacts associated with these efforts. Impacts that were predicted in the environmental analyses prepared for the programs and projects are reviewed and summarized, along with measures that were recommended to mitigate these impacts. Also, for those projects that have gon… more
Date: March 1, 1984
Creator: Webb, J. W.; Eddlemon, G. K. & Reed, A. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Inspection of the Heber binary-cycle geothermal project

Description: We concluded that DOE had effective management control procedures to monitor project costs and the design, construction and demonstration activities. Lessons learned from previous DOE geothermal projects were applied and technical information generated from the Heber plant will be transferred to the public and private sectors by the project participants. We also identified the following issues that concerned us: Revenue Sharing: under existing revenue sharing provisions in the Cooperative Agree… more
Date: March 28, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Case study of the Wendel-Amedee Exploration Drilling Project, Lassen County, California, User Coupled Confirmation Drilling Program

Description: The Wendel-Amedee KGRA is located in Honey Lake basin in Lassen County, California, on the boundary between the Modoc Plateau and the Basin and Range geologic provinces. A variety of geophysical surveys was performed over the project property. Geophysical data helped in establishing the regional structural framework, however, none of the geophysical data is sufficiently refined to be considered suitable for the purpose of siting an exploration drill hole. Drilling of reservoir confirmation well… more
Date: September 1, 1984
Creator: Zeisloft, J.; Sibbett, B.S. & Adams, M.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of temperature on the absolute permeability of consolidated sandstone

Description: The effect of temperature on absolute permeability has been a point of disagreement in the petroleum literature for many years. Recent work at Stanford University has shown no dependence on temperature of the absolute permeability to water of unconsolidated sand cores. The objective of this report is to extend the investigation to consolidated sandstone by following similar experimental procedures and observing whether any temperature effects exist. Fontainebleau sandstone was chosen as the cor… more
Date: April 1, 1984
Creator: McKay, W.I. & Brigham, W.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recovery of platinum from concentrated sodium chloride brine by electrodeposition on vitreous carbon

Description: The voltammetric characteristics of Pt(II) and Pt(IV) have been examined at a vitreous carbon electrode in slightly acidic 3M (approx. 15 wt %) NaCl solutions. Pt(IV) is reduced to Pt(II) at approx. 0 V and Pt(II) is reduced to Pt(0) at approx. -0.5 V vs Ag-AgCl. The rate of deposition of platinum metal at -0.5 V is very low on bare carbon, but increases as the coverage of platinum increases. The potential at which hydrogen is evolved in this medium is approx. -0.85 V. A technique has been test… more
Date: January 1, 1984
Creator: Harrar, J.E. & Stephens, F.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preferred methods of analysis for chemical tracers in moderate- and high-temperature geothermal environments

Description: This report describes the sampling and analytical techniques used for tracer analysis in the Raft River and East Mesa field tests. The collection procedures and sample preservation techniques, analytical methods and possible sources of contamination or error are discussed in detail. 6 refs.
Date: December 1, 1984
Creator: Kroneman, R.L.; Yorgason, K.R. & Moore, J.N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sperry Low Temperature Geothermal Conversion System, Phase I and Phase II. Volume IV. Field activities. Final report

Description: This volume describes those activities which took place at the Sperry DOE Gravity Head plant site at the East Mesa Geothermal Reservoir near Holtville, California between February 1980, when site preparation was begun, and November 1982, when production well 87-6 was permanently abandoned. Construction activities were terminated in July 1981 following the liner collapse in well 87-6. Large amounts of program time manpower, materials, and funds had been diverted in a nine-month struggle to salva… more
Date: January 1, 1984
Creator: Harvey, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sperry Low Temperature Geothermal Conversion System, Phase I and Phase II. Volume V. Component development. Final report

Description: The fundamental inventions which motivate this program are system concepts centered on a novel heat engine cycle and the use of downwell heat exchange. Here, the primary emphasis is on downwell hardware. The only surface equipment included is the surface portion of the instrumentation and control systems. Downwell instrumentation is reported. Downwell conduits and techniques for installing, connecting and sealing them are covered. The downwell turbine-pump unit (TPU) is a critical component sin… more
Date: January 1, 1984
Creator: Harvey, C.; McBee, W. & Matthews, H.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of borehole electromagnetic and seismic detection of fractures

Description: Experiments were conducted to establish the feasibility of downhole high-frequency techniques for location of fractures in the vicinity of boreholes. An existing flame-cut slot in granite was filled with salt water to simulate a brine-filled fracture. The first method used an electromagnetic wave at 30 to 300 MHz, vhf frequencies. A transmitter consisting of a phased dual-dipole array arranged to provide a directional signal toward the fracture was installed in a borehole opposite the fracture.… more
Date: February 1, 1984
Creator: Chang, H. T.; Suhler, S. A. & Owen, T. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Direct use geothermal PON and PRDA projects under DOE-ID Administration. Annual report FY 1983

Description: This report presents the status of Geothermal PRDA and PON projects administered by the DOE-ID as of the end of FY-1983. Both programs were instituted to assist the development of the direct application of geothermal energy. The PRDA Program consists of a series of studies designed to investigate the engineering and economic feasibility of geothermal direct applications. The PON Program consists of demonstration projects in which project costs are shared between DOE and a private company, munic… more
Date: January 1, 1984
Creator: Childs, F.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of flow data from the DOW/DOE L. R. Sweezy No. 1 well

Description: This topical report presents the results of work to-date on the analysis and simulation of flow and pressure data from the testing of the L.R. Sweezy No. 1 well. Analysis of drawdown data indicates a formation permeability of around 126 md, and a flow-rate dependent skin. The conventional analysis techniques were, however, found to be inadequate for analyzing the buildup data. The formation properties inferred from the drawdown were used together with the CHARGR simulator to simulate the produc… more
Date: March 1, 1984
Creator: Garg, S. K. & Riney, T. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Economics of a conceptual 75 MW Hot Dry Rock geothermal electric power station

Description: Man-made, Hot Dry Rock (HDR) geothermal energy reservoirs have been investigated for over ten years. As early as 1977 a research-sized reservoir was created at a depth of 2.9 km near the Valles Caldera, a dormant volcanic complex in New Mexico, by connecting two wells with hydraulic fractures. Thermal power was generated at rates of up to 5 MW(t) and the reservoir was operated for nearly a year with a thermal drawdown less than 10/sup 0/C. A small 60kW(e) electrical generation unit using a bina… more
Date: January 1, 1984
Creator: Murphy, H. D.; Drake, R. H.; Tester, J. W. & Zyvoloski, G. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hydrothermal alteration in well Baca 22, Baca geothermal area, Valles Caldera, New Mexico

Description: A number of exploration wells were drilled to supply steam for a proposed electric generating plant. Drill cuttings from one of these wells, Baca 22, were studied with a petrographic microscope and by x-ray diffraction to determine the nature of the original rocks and of the hydrothermal alteration. The hydrothermal alteration is used to determine the temperatures of alteration which can then be compared with borehole temperatures to determine if the mineral assemblages are compatible with pres… more
Date: January 1, 1984
Creator: Fox, D.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploratory basic energy research conducted at Standord University in the period September, 1979-August, 1983. Final report

Description: In September, 1978, the Department of Energy awarded a contract to Stanford for Exploratory Basic Research. Projects to be supported were to be chosen by Stanford, with emphasis being placed on exploratory research likely to lead to full-scale research programs under support of appropriate agencies. Funding was provided for three years, as follows: FY 1979, $150K; FY 1980, 200K; and FY 1981, 250K for a total of $600K. The DOE funds provided through this contract were used, in combination with t… more
Date: January 1, 1984
Creator: Reynolds, W.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploratory energy research program of the University of Hawaii at Manoa. Progress report

Description: Progress is reported from the University of Hawaii on: UHM rooftop solar energy laboratory; solar pond cleansing techniques; combustion properties of biomass pyrolysis products; high-temperature solar concentrator absorber; biological abatement of hydrogen sulfide during geothermal energy production; geothermal systems on submarine rift zones of the Hawaiian chain; nitrogenous products of OTEC chlorination; interaction of hydrogen and deuterium with transition metals and their alloys at high pr… more
Date: January 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New Mexico Geothermal Commercialization Program. Final report

Description: The New Mexico Geothermal Commercialization Program was developed as a mission-oriented program aimed at accelerating the commercial utilization of geothermal resources. The program provided the US Department of Energy, the State of New Mexico, and the citizens of the state a technical and economic guide for geothermal applications and implementation. This was accomplished by developing market strategies, cultivating public outreach, serving as a broker where appropriate and by providing limite… more
Date: February 1, 1984
Creator: Scudella, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Summary of Geothermal Exploration Activity in the State of Washington From 1978 to 1983

Description: During the course of conducting the statewide reconnaissance study of Washington's potential geothermal resources, several specific areas and broader regions have been identified as targets which warrant a more concentrated effort. Over the past three years, the program has continued to identify new sites, but has concentrated on better defining the resource potential of the best areas. The locations of these geothermal areas are shown, and the level of progress for each area is shown, expresse… more
Date: January 1984
Creator: Korosec, M. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Model of gypsum, calcite and silica solubilities for application to geothermal waters over a wide range of temperature, P/sub CO/sub 2// and ionic strength. Final technical report, October 1, 1983-September 30, 1984

Description: This report describes the construction of a high temperature (25 to 250/sup 0/C), variable P/sub CO/sub 2// (1 to 40 atm), chemical model of mineral (including gypsum, calcite and amorphous silica) solubilities in the system: Na-K-Ca-H-Cl-SO/sub 4/-HCO/sub 3/-CO/sub 3/-CO/sub 2/-SiO/sub 2/-H/sub 2/O. This model was designed to support geothermal energy production needs.
Date: January 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Parcperdue geopressure-geothermal project. Study a geopressured reservoir by drilling and producing a well in a limited geopressured water sand. Final technical report, September 28, 1979-December 31, 1983

Description: The behavior of geopressured reservoirs was investigated by drilling and producing a well in small, well defined, geopressured reservoir; and performing detailed pressure transient analysis together with geological, geophysical, chemical, and physical studies. The Dow-DOE L. R. Sweezy No. 1 well was drilled to a depth of 13,600 feet in Parcperdue field, just south of Lafayette, Louisiana, and began production in April, 1982. The production zone was a poorly consolidated sandstone which constant… more
Date: January 15, 1984
Creator: Hamilton, J.R. & Stanley, J.G. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geothermal reservoir well stimulation program. Final program summary report

Description: Eight field experiments and the associated theoretical and laboratory work performed to develop the stimulation technology are described. A discussion of the pre-stimulation and post-stimulation data and their evaluation is provided for each experiment. Overall results have shown that stimulation is viable where adequate reservoirs are penetrated by wells encountering formation damage or locally tight formation zones. Seven of the eight stimulation experiments were at least technically successf… more
Date: January 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calibration of a neutron log in partially saturated media IV: effects of sonde-wall gap

Description: A gap between a neutron sonde and the wall of a borehole can have a significant effect on the observed count rate. This effect was determined experimentally to be linear with gaps as large as 2.5 cm. The count rate is given by N/sub N/ = K/sub 0/ + K/sub 1/g where K/sub 0/ is the count rate that would be observed at zero gap, and g is the gap. The parameters K/sub 0/ and K/sub 1/ are dependent on both water (ie. hydrogen) content and bulk density. In many situations failure to correct the count… more
Date: March 8, 1984
Creator: Axelrod, M. C. & Hearst, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sperry Low Temperature Geothermal Conversion System, Phase 1 and Phase II. Final report. Volume III. Systems description

Description: The major fraction of hydrothermal resources that have the prospect of being economically useful for the generation of electricity are in the 300/sup 0/F to 425/sup 0/F temperature range. Cost-effective conversion of the geothermal energy to electricity requires the conception and reduction to practice of new ideas to improve conversion efficiency, enhance brine flow, reduce plant costs, increase plant availability, and shorten the time between investment and return. The problems addressed duri… more
Date: January 1, 1984
Creator: Matthews, H.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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