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Measurement and effect of the critical gas saturation and relative permeability on the production of methane from geopressured aquifers of saturated brine

Description: The attempt to measure critical gas saturation at pressures in the range of 5000 to 10,000 psi failed. It proved impossible, with the funds and time available, to conclude a successful suite of experiments. The problem was centered on the inability to maintain adequate seals on the end plates of the apparatus. Numerical simulation confirmed that the level of critical gas saturation required for methane to be produced profitably from geopressured aquifers was unrealistically high. Most of the wa… more
Date: March 1, 1982
Creator: Doscher, T.M.; Azari, M. & Marinello, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Monitoring well systems in geothermal areas

Description: The ability to monitor the injection of spent geothermal fluids at reasonable cost might be greatly improved by use of multiple-completion techniques. Several such techniques, identified through contact with a broad range of experts from the groundwater and petroleum industries, are evaluated relative to application in the typical geologic and hydrologic conditions of the Basin and Range Province of the Western United States. Three basic monitor well designs are suggested for collection of pres… more
Date: March 1, 1982
Creator: Lofgren, B.E.; O'Rourke, J.; Sterrett, R.; Thackston, J. & Fain, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Site 300 hazardous-waste-assessment project. Interim report: December 1981. Preliminary site reconnaissance and project work plan

Description: This document was prepared to outline the scope and objectives of the Hazardous Waste Assessment Project (HWAP) at Site 300. This project was initiated in October, 1981, to investigate the existing solid waste landfills in an effort to satisfy regulatory guidelines and assess the potential for ground-water contamination. This involves a site-specific investigation (utilizing geology, hydrology, geophysics and geochemistry) with the goal of developing an effective ground-water quality monitoring… more
Date: January 20, 1982
Creator: Raber, E.; Helm, D.; Carpenter, D.; Peifer, D. & Sweeney, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reservoir performance in viscoelastic porous media

Description: The mass balance equations for a two-phase two-component fluid system are written for viscoelastic porous media. The resulting equations are approximated by finite differences and the resulting numerical simulator is used to conduct a sensitivity study on the effects of uniaxial viscoelastic deformation in geopressured aquifers. Results of this study indicate that viscoelastic deformation may have considerable influence on the pressure maintenance of these aquifers. A numerical model of the geo… more
Date: January 1, 1982
Creator: Rago, F. M.; Ohkuma, H.; Sepehrnoori, K. & Thompson, T.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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User manual for AQUASTOR: a computer model for cost analysis of aquifer thermal energy storage coupled with district heating or cooling systems. Volume I. Main text

Description: A computer model called AQUASTOR was developed for calculating the cost of district heating (cooling) using thermal energy supplied by an aquifer thermal energy storage (ATES) system. The AQUASTOR model can simulate ATES district heating systems using stored hot water or ATES district cooling systems using stored chilled water. AQUASTOR simulates the complete ATES district heating (cooling) system, which consists of two principal parts: the ATES supply system and the district heating (cooling) … more
Date: April 1, 1982
Creator: Huber, H. D.; Brown, D. R. & Reilly, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Western oil-shale development: a technology assessment. Volume 5: an investigation of dewatering for the modified in-situ retorting process, Piceance Creek Basin, Colorado

Description: The C-a and the C-b tracts in the Piceance Creek Basin are potential sites for the development of oil shale by the modified in-situ retorting (MIS) process. Proposed development plans for these tracts require the disturbance of over three billion m/sup 3/ of oil shale to a depth of about 400 m (1312 ft) or more below ground level. The study investigates the nature and impacts of dewatering and reinvasion that are likely to accompany the MIS process. The purpose is to extend earlier investigatio… more
Date: January 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Final report for hydrologic studies support: INTERCOMP code conversion

Description: Mass and energy balance errors noted in a number of IBM-executed problems are caused by the lack of precision in computing total mass and energy values for a domain. This problem is evident in domains constructed with highly variable mesh sizes during the early time of simulation. The machine round-off was corrected by double-precisioning certain calculations for mass and energy balance. Small differences that exist between the improved INTERCOMP code operating on an IBM machine and the old ver… more
Date: January 11, 1982
Creator: Ichimura, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low-to-moderate-temperature hydrothermal reservoir engineering handbook

Description: Guidelines are provided for evaluating reservoir characteristics containing setions on reservoir classification, conceptual modeling, testing during drilling, current theory of testing, test planning and methodology, instrumentation, and a sample computer program. Sections on test planning and methodology, geochemistry, reservoir monitoring, and the appendixes, containing technical detail, are included. Background information needed to monitor the program of reservoir evaluation is provided.
Date: June 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Technical-assistance report on a geothermal heating utility for Lemmon, South Dakota

Description: The purpose of this effort was to review work already done toward establishing a geothermal heating utility in Lemmon, South Dakota; to redefine the goals for such a project; and to recommend how the project might proceeed to completion. The minimum size Phase I suggested would provide heat for up to 62 buildings in a 9-block area. Total cost is estimated at $1,800,000 to 1,950,000. The geothermal source is expected to be 100 to 400 gpm of 160/sup 0/F water pumped from 500 feet deep. Proposed e… more
Date: February 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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User manual for AQUASTOR: a computer model for cost analysis of aquifer thermal-energy storage oupled with district-heating or cooling systems. Volume II. Appendices

Description: A computer model called AQUASTOR was developed for calculating the cost of district heating (cooling) using thermal energy supplied by an aquifer thermal energy storage (ATES) system. the AQUASTOR Model can simulate ATES district heating systems using stored hot water or ATES district cooling systems using stored chilled water. AQUASTOR simulates the complete ATES district heating (cooling) system, which consists of two prinicpal parts: the ATES supply system and the district heating (cooling) … more
Date: April 1, 1982
Creator: Huber, H. D.; Brown, D. R. & Reilly, R. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geothermal utilization at Castle Oaks Subdivision, Castle Rock, Colorado

Description: Designs of geothermal systems for using warm water from four aquifers of the Denver Basin are presented. Advantages of using heat pumps with the geothermal resource are discussed. Two design cases-one with separate heat load and heat pump, and the other with the heat pump and heat load located at the well site-are evaluated in terms of pump costs, operating costs, and payback periods. The 20-year delivered energy costs for the two geothermal systems would be slightly less than those for natural… more
Date: April 1, 1982
Creator: Garing, K.L.; Coury, G.E. & Goering, S.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Heat and mass transfer in unsaturated porous media. Final report

Description: A preliminary study of heat and water transport in unsaturated porous media is reported. The project provides background information regarding the feasibility of seasonal thermal energy storage in unconfined aquifers. A parametric analysis of the factors of importance, and an annotated bibliography of research findings pertinent to unconfined aquifer thermal energy storage (ATES) are presented. This analysis shows that heat and mass transfer of water vapor assume dominant importance in unsatura… more
Date: February 1, 1982
Creator: Childs, S.W. & Malstaff, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low-temperature geothermal resource and stratigraphy of portions of Yakima County, Washington

Description: The low-temperature geothermal resource of portions of Yakima County, south-central Washington, is defined by several least squares linear regression analyses of bottom-hole temperature and depth data. Intra-borehole flow prevents the use of borehole temperature gradients for geothermal resource assessment. Bottom-hole temperature and depth data were separated into fourteen well data groups based on geographic proximity, land slope azimuth, and position within the regional ground-water flow sys… more
Date: July 30, 1982
Creator: Biggane, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Shallow subsurface temperatures and some estimates of heat flow from the Colorado Plateau of northeastern Arizona

Description: Temperature data to depths of a few hundred meters were obtained from 29 wells in northeastern Arizona; 12 in the region surrounding the San Francisco Volcanic Field, 8 in the Black Mesa area, and 9 in the south-central Colorado Plateau which includes the White Mountains. Although there was evidence for local hydrologic disturbances in many temperature profiles, most wells provided an estimate of the conductive thermal gradient at the site. A few thermal conductivities were measured and were co… more
Date: January 1, 1982
Creator: Sass, J.H.; Stone, C. & Bills, D.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Production characteristics of some Cerro Prieto wells

Description: An areal distribution of heat and mass production in the Cerro Prieto field has been presented for two different times to determine the initial state of the ..cap alpha.. and ..beta.. aquifers and the behavior of the field under production. It was found that, initially, the ..cap alpha.. and ..beta.. aquifers were hot and very hot respectively. Cold boundaries to the field were found to be located toward the west and northeast. Initially, fluid production from most wells was very high. M-53 and… more
Date: August 1, 1982
Creator: Goyal, K. P.; Halfman, S. E.; Truesdell, A. H. & Howard, J. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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United States Gulf Coast geopressured-geothermal program. Annual report, 1 November 1980-31 October 1981

Description: The following are included: objectives, overview, coordination assistance, compaction measurements on Texas Gulf Coast Sandstones and Shales; US Gulf Coast Geopressured-Geothermal Aquifer simulation, Preliminary Review of Subsidence Insurance Issues, Geopressured-Geothermal Information System, and Study of Log Derived Water Resistivity Values in Geopressured Geothermal Formations. (MHR)
Date: July 1, 1982
Creator: Dorfman, M. H.; Morton, R. A.; Dunlap, H. F.; Frederick, D. O.; Gray, K. E.; Peters, E. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tri-State Synfuels Project Review: Volume 9A. Subcontract information. [Proposed Henderson, Kentucky coal to gasoline plant; water supply and civil engineering subcontracts]

Description: Volume 9A considers subcontract work done at the site involving hydrogeological studies with respect to water supply and geotechnical work with respect to the building foundations necessary based on boreholes drilled and the lithology of the area. (LTN)
Date: June 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Brine production as an exploration tool for water drive gas reservoirs

Description: Data from detailed analyses of production from geopressured geothermal aquifers suggest that appropriate brine production tests may well result in production of otherwise undiscoverable hydrocarbons. This paper reviews concepts for the biogenic origin of natural gas, subsurface migration of natural gas, and trapping of that gas in commercially producible reservoirs. Data are presented to demonstrate discovery of free natural gas by brine production from two dry wildcat wells. Finally, condition… more
Date: January 1, 1982
Creator: Randolph, Phillip L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Problems of trace-element ratios and geothermometry in a gravel geothermal-aquifer system

Description: The system studied is a Tertiary-age, block-faulted basin in which a Pleistocene gravel bed acts as a confined aquifer and permits the lateral dispersion of the geothermal fluids. Vertical movement of the hot water is currently believed to be controlled by faults on the east side of the valley. An aerial magnetic anomaly and a Bouguer gravity anomaly appear to correspond with thoese eastern faults. Basic data on the geology and trace element halos has been presented previously. Evaluation of th… more
Date: January 1, 1982
Creator: Sonderegger, J. L. & Donovan, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multi-dimensional finite element code for the analysis of coupled fluid energy, and solute transport (CFEST)

Description: The Seasonal Thermal Energy Storage Program is being conducted for the Department of Energy by Pacific Northwest Laboratory. A major thrust of this program has been the study of natural aquifers as hosts for thermal energy storage and retrieval. Numerical simulation of the nonisothermal response of the host media is fundamental to the evaluation of proposed experimental designs and field test results. This report represents the primary documentation for the coupled fluid, energy and solute tran… more
Date: August 1, 1982
Creator: Gupta, S. K.; Kincaid, C. T.; Meyer, P. R.; Newbill, C. A. & Cole, C. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The implications of UIC and NPDES regulations on selection of disposal options for spent geothermal brine

Description: This document reviews and evaluates the various options for the disposal of geothermal wastewater with respect to the promulgated regulations for the protection of surface and groundwaters. The Clean Water Act of 1977 and the Safe Drinking Water Act Amendments are especially important when designing disposal systems for geothermal fluids. The former promulgates regulations concerning the discharge of wastewater into surface waters, while the latter is concerned with the protection of ground wat… more
Date: July 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geology and Geothermal Potential North of Wells, Nevada

Description: The geology north of Wells, Nevada is dominated by approximately 2150 m of Tertiary lacustrine siltstones and conglomerates. The sediments are cut by a high-angle, range-bounding fault and several associated step faults. Hydrothermal alteration and silicification are associated with the high-angle faults. Two ages of Quaternary sediments locally overlie the Tertiary sediments. Lithologic and well log analyses define numerous potential aquifers in the Tertiary sediments. The shallowest of these … more
Date: November 1, 1982
Creator: Jewell, Paul W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Internal Technical Report, 1981 Annual Report, An Analysis of the Response of the Raft River Geothermal Site Monitor Wells

Description: A groundwater monitoring program has been established on the Raft River Geothermal Site since 1978. The objective of this program is to document possible impacts that may be caused by geothermal production and injection on the shallow aquifers used for culinary and irrigation purposes. This annual progress report summarizes data from 12 monitor wells during 1981. These data are compared with long-term trends and are correlated with seasonal patterns, irrigation water use and geothermal producti… more
Date: April 1, 1982
Creator: Thurow, T. L.; Large, R. M.; Allman, D. W.; Tullis, J. A. & Skiba, P. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Unconventional Gas Recovery: State of Knowledge Document

Description: This report is a synthesis of environmental data and information relevant to the four areas of unconventional gas recovery (UGR) resource recovery: methane from coal, tight western sands, Devonian shales and geopressurized aquifers. Where appropriate, it provides details of work reviewed; while in other cases, it refers the reader to relevant sources of information. This report consists of three main sections, 2, 3, and 4. Section 2 describes the energy resource base involved and characteristic… more
Date: January 1, 1982
Creator: Geffen, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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