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Geothermal resource assessment for North Dakota. Final Report

Description: Temperatures in four geothermal aquifers, inyan Kara (Cretaceous), Mission Canyon (Mississippian), Duperow (Devonian), and Red River (Ordovician) are in the range for low and moderate temperature geothermal resources within an area of about 130,000 km{sup 2} in North Dakota. The accessible resource base is 13,500 x 10{sup 18} J., which, assuming a recovery factor of 0.001, may represent a greater quantity of recoverable energy than is present in the basin in the form of petroleum. A synthesis of heat flow, thermal conductivity, and stratigraphic data was found to be significantly more accurate in determining formation temperatures than the use of linear temperature gradients derived from bottom hole temperature data. The thermal structure of the Williston Basin is determined by the thermal conductivities of four principal lithologies: Tertiary silts and sands (1.6 W/m/K), Mesozoic shales (1.2 W/m/K), Paleozoic limestones (3.2 W/m/K), and Paleozoic dolomites (3.5 W/m/K). The stratigraphic placement of these lithologies leads to a complex, multi-component geothermal gradient which precludes use of any single component gradient for accurate determination of subsurface temperatures.
Date: April 1, 1984
Creator: Gosnold, William D. Jr.
Partner: UNT Libraries Government Documents Department

An inventory of Geothermal Resources in Nebraska: State-Coupled Program between US Department of Energy and The University of Nebraska. Final report, June 30, 1983

Description: The goal of the State Coupled Resource Assessment Program is to identify and evaluate geothermal resources in the state, particularly low-temperature potential. Eight tasks were identified and documented in this report as follows: (1) Bottom-hole Temperature Survey; (2) Heat Flow and Temperature Gradient Survey; (3) Data Translation studies; (4) Gravity Data; (5) Substate Regions; (6) Information Dissemination; (7) State Geothermal Map; (8) Reports. The project had three major products: (1) a map ''Geothermal Resources of Nebraska''; (2) a significant amount of thermal data collected and documented within the state; and (3) a series of publications, presentations and meetings.
Date: June 30, 1983
Creator: Gosnold, William D.; Eversoll, Duane, A.; Messenger, Karen A. & Carlson, Marvin P.
Partner: UNT Libraries Government Documents Department