Total organic carbon and pyrolysis analysis data for the U.S. Geological Survey Alcova AR–1–13 core hole, Natrona County, Wyoming (ver. 1.1, October 2021)
In 2013 the U.S. Geological Survey (USGS) drilled a continuous core in the southeastern part of the Wind River Basin, Wyoming to evaluate the source rock potential of the Lower and lowermost Upper Cretaceous marine shales . The well, named the Alcova Reservoir AR–1–13, located on the northeast flank of the Alcova anticline was spud in the lower part of the Frontier Formation and ended in the upper part of the Cloverly Formation recovered core between 40.5 feet (ft) and 623 ft.
Thirty-nine samples were selected to evaluate the source rock potential of the marine shales in the cored interval as determined by total organic carbon (TOC) and programmed pyrolysis analysis. Five samples are from the lower part of the Frontier Formation, 24 from the upper siliceous part of the Mowry Shale, 4 from the lower Mowry Shale (Shell Creek Shale of Eicher, 1962), and 6 from the Thermopolis Shale. TOC content was determined using the Leco combustion method after carbonate removal (see Jarvie, 1991 for details), and the programmed pyrolysis analysis was done using a Hydrocarbon Analyzer with Kinetics (HAWK, Wildcat Technologies) instrument (see Espitalie and others, 1977; Tissot and Welte, 1978; Peters, 1986; and Hunt, 1996 for detailed discussions of the pyrolysis method). The results of the analyses are presented in the data table.
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| description | In 2013 the U.S. Geological Survey (USGS) drilled a continuous core in the southeastern part of the Wind River Basin, Wyoming to evaluate the source rock potential of the Lower and lowermost Upper Cretaceous marine shales . The well, named the Alcova Reservoir AR–1–13, located on the northeast flank of the Alcova anticline was spud in the lower part of the Frontier Formation and ended in the upper part of the Cloverly Formation recovered core between 40.5 feet (ft) and 623 ft. Thirty-nine samples were selected to evaluate the source rock potential of the marine shales in the cored interval as determined by total organic carbon (TOC) and programmed pyrolysis analysis. Five samples are from the lower part of the Frontier Formation, 24 from the upper siliceous part of the Mowry Shale, 4 from the lower Mowry Shale (Shell Creek Shale of Eicher, 1962), and 6 from the Thermopolis Shale. TOC content was determined using the Leco combustion method after carbonate removal (see Jarvie, 1991 for details), and the programmed pyrolysis analysis was done using a Hydrocarbon Analyzer with Kinetics (HAWK, Wildcat Technologies) instrument (see Espitalie and others, 1977; Tissot and Welte, 1978; Peters, 1986; and Hunt, 1996 for detailed discussions of the pyrolysis method). The results of the analyses are presented in the data table. |
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| modified | 2021-11-02T00:00:00Z |
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| spatial | -107.0000, 42.5000, -106.2000, 43.0000 |
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| title | Total organic carbon and pyrolysis analysis data for the U.S. Geological Survey Alcova AR–1–13 core hole, Natrona County, Wyoming (ver. 1.1, October 2021) |
