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Monday, December 26, 2011

Molecular Characterization and Comparison of Shale Oils Generated by Different Pyrolysis Methods

Outspide Publication: Energy & Fuels
Shale oils generated using different laboratory pyrolysis methods have been studied using standard oil characterization methods as well as Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) with electrospray ionization (ESI) and atmospheric photoionization (APPI) to assess differences in molecular composition.


Tuesday, December 13, 2011

Building on crossvalidation for increasing the quality of geostatistical modeling

Outside Publication: Stochastic Environmental Research and Risk Assessment 
Crossvalidation has been used in spatial statistics, mostly in kriging, for the analysis of mean square errors. An appeal of this approach is its ability to work with the same empirical sample available for running the algorithms. This paper goes beyond checking estimates by formulating a function sensitive to conditional bias.


Sunday, December 04, 2011

Geochemical Database of Feed Coal and Coal Combustion Products

From Five Power Plants in the United States

USGS Publication: Data Series 635
The principal mission of the U.S. Geological Survey (USGS) Energy Resources Program (ERP) is to (1) understand the processes critical to the formation, accumulation, occurrence, and alteration of geologically based energy resources; (2) conduct scientifically robust assessments of those resources; and (3) study the impacts of energy resource occurrence and (or) their production and use on both the environment and human health.


Sunday, November 27, 2011

On the Use of the Beta Distribution in Probabilistic Resource Assessments

Outside Publication: Natural Resources Research
The beta distribution is another continuous distribution defined within a finite interval offering wider flexibility in style of variation, thus allowing consideration of models in which the random variables closely follow the observed or expected styles of variation. 


Sunday, November 27, 2011

Additional Geologic Information for 2011 USGS Assessment of Marcellus Shale

USGS Publication: Open-File Report 2011–1298
The USGS recently assessed the potential for natural gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province. This preliminary report provides some additional geologic information used in the Marcellus Shale assessment.


Tuesday, November 22, 2011

Arctic Petroleum Geology

Outside Publication (book): Arctic Petroleum Geology
New book by The Geological Society of London, "Arctic Petroleum Geology, published August 2011. This book provides a comprehensive overview of the geology and the petroleum potential of the Arctic including 15 papers by USGS scientists.


Thursday, November 17, 2011

New U.S. Geological Survey Method for the Assessment of Reserve Growth

USGS Publication: Scientific Investigations Report 2011–5163
A new U.S. Geological Survey method was developed to assess the reserve-growth potential of technically recoverable crude oil and natural gas to be added to reserves under proven technology currently in practice within the trend or play, or which reasonably can be extrapolated from geologically similar trends or plays. This method currently is in use to assess potential additions to reserves in discovered fields of the United States.


Thursday, November 03, 2011

Formulation of a correlated variables methodology for assessment of continuous gas resources

With application to the Woodford play, Arkoma Basin, eastern Oklahoma

Outside Publication: Geological and Mining Institute of Spain, Boletín Geológico y Minero
USGS paper published in the Geological and Mining Institute of Spain, Boletín Geológico y Minero.  New experimental methodology for assessing continuous gas resources is illustrated by evaluating a gas play in the Woodford Shale in the Arkoma Basin of Oklahoma.


Wednesday, October 26, 2011

In-Place Oil Shale Resources Underlying Federal Lands in the Green River and Washakie Basins, Southwestern Wyoming

USGS Publication: Fact Sheet 2011–3113
Using a geologic-based assessment methodology, the U.S. Geological Survey estimated an in-place oil shale resource of 906 billion barrels under Federal mineral rights, or 62 percent of the total oil shale in place, in the Green River and Washakie Basins, Wyoming. More than 67 percent of the total oil shale in-place resource, or 969 billion barrels, is under Federal surface management.


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