Energy Resources Program
Press Releases, Technical Announcements, Publications, Field Reports, and Science Highlights.
Wednesday, August 31, 2011
Outside Publication: Society for Organic Petrology NewsletterThe tool of measuring "vitrinite reflectance" under a microscope has great value in petroleum exploration and coal utilization, and the reflectance is a simple number, such as 1.4% Ro, with some slight variations depending on technique. This report analyzes here just one factor, "smear" of crude oil on the polished surface (from the sample), which may reduce reflectance because of thin-film interference.
Categories: All, Coal, Coal Quality, Organic Petrology, World Coal Quality Inventory, Geochemistry & Geophysics, Geochemistry Laboratories, Geochemistry Research, Type: Outside Publication
Friday, August 26, 2011
USGS Publication: Open-File Report 2011–1148A review of publicly available coal quality data during the coal resource assessment of the southwestern part of the Powder River Basin, Wyoming, revealed significant problems and limitations with those data. The review processes demonstrated why it is always preferable to research and evaluate the circumstances regarding the sampling and analytical methodology from the original data sources when evaluating coal quality information, particularly if only limited data are available.
Categories: All, Coal, Coal Quality, World Coal Quality Inventory, Regional Studies, Powder River Basin, Type: USGS Publication
Tuesday, August 23, 2011
Press Release & PublicationIn 2011, the USGS completed an assessment of the undiscovered oil and gas potential of the Devonian Marcellus Shale within the Appalachian Basin Province of the eastern United States. The Marcellus Shale contains about 84 trillion cubic feet of undiscovered, technically recoverable natural gas and 3.4 billion barrels of undiscovered, technically recoverable natural gas liquids according to the new assessment.
Categories: All, Oil & Gas, National Oil and Gas Assessments, Regional Studies, Appalachian Basin, Type: Press Release, Type: USGS Publication
Thursday, August 11, 2011
USGS Publication: Open-File Report 2011–1167The U.S. Geological Survey (USGS) has developed a revised quantitative methodology for assessing resources in continuous (unconventional) petroleum deposits. Continuous petroleum resources include shale gas, coalbed gas, and other oil and gas deposits in low-permeability (“tight”) reservoirs.
Categories: All, Oil & Gas, National Oil and Gas Assessments, Type: USGS Publication
USGS Publication: Digital Data Series 69-DD
The U.S. Geological Survey (USGS) recently completed a comprehensive assessment of in-place oil in oil shales in the Eocene Green River in the Greater Green River Basin, Wyoming, Colorado, and Utah. This DVD includes reports, data, and an ArcGIS project describing the assessment.
Categories: All, Oil Shale, Other Energy, Type: USGS Publication
USGS Publication: Data Series 625
The U.S. Geological Survey (USGS) compiled a geographic information system (GIS) of Wyoming statewide historical oil and gas drilling activity for the Wyoming Landscape Conservation Initiative (WLCI). This product complements the 2009 USGS publication on oil and gas development in southwestern Wyoming by approximating, based on database attributes, the time frame of drilling activity for each well (start and stop dates).
Categories: All, Oil & Gas, National Oil and Gas Assessments, Regional Studies, Southwestern Wyoming (WLCI), Type: USGS Publication
Tuesday, August 09, 2011
USGS Publication: Open-File Report 2011–1175Gas, oil, and water production data were compiled from selected wells in two tight gas reservoirs—the Codell-Niobrara interval, comprised of the Codell Sandstone Member of the Carlile Shale and the Niobrara Formation; and the Dakota J interval, comprised mostly of the Muddy (J) Sandstone of the Dakota Group; both intervals are of Cretaceous age—in the Wattenberg field in the Denver Basin of Colorado.
Categories: All, Oil & Gas, National Oil and Gas Assessments, Environment Aspects, Produced Waters, Type: USGS Publication
USGS Publication: U.S. Geological Survey Professional Paper 1784-A
A broad, post-mid-Cretaceous uplift is defined in the northern National Petroleum Reserve in Alaska (NPRA) by regional truncation of Cretaceous strata, thermal maturity patterns, and amounts of exhumation estimated from sonic logs. Apatite fission-track (AFT) analysis of samples from three wells (South Meade No. 1, Topagoruk No. 1, and Ikpikpuk No. 1) across the eastern flank of the uplift indicates Tertiary cooling followed by Quaternary heating.
Categories: All, Regional Studies, Alaska, Type: USGS Publication
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