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Wednesday, March 21, 2012

Calculation of hydrocarbon-in-place in gas and gas-condensate reservoirs

Carbon dioxide sequestration

USGS Publication: Open-File Report 2012–1033
The objective of the present study is to propose a simple procedure for calculating the hydrocarbon-in-place volume of a condensate reservoir to help estimate the hydrocarbon pore volume for potential CO2 sequestration.


Tuesday, March 20, 2012

Assessment of Undiscovered Conventional Oil and Gas Resources of Four Australian Provinces, 2011

Bonaparte Basin, Browse Basin, Northwest Shelf, and Gippsland Basin Provinces

USGS Publication: Fact Sheet 2012–3025
Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 4.7 billion barrels of undiscovered oil and 227 trillion cubic feet of undiscovered natural gas in three major offshore petroleum basins of northwest Australia and in the Gippsland Basin of southeast Australia.


Tuesday, March 06, 2012

Assessment of Undiscovered Oil and Gas Resources of the Southern Siberian Craton, Russia, 2011

Baykit High, Nepa–Botuoba High, Angara−Lena Terrace, and Cis−Patom Foredeep Provinces

USGS Publication: Fact Sheet 2011–3155
Using a geology-based assessment methodology, the U.S. Geological Survey estimated volumes of undiscovered, technically recoverable, conventional petroleum resources for the southern Siberian craton provinces of Russia. The mean volumes were estimated at 3.0 billion barrels of crude oil, 63.3 trillion cubic feet of natural gas, and 1.2 billion barrels of natural gas liquids.


Tuesday, March 06, 2012

Gas emissions, minerals, and tars associated with three coal fires, Powder River Basin, USA

Outside Publication: Science of The Total Environment
Ground-based surveys of three coal fires and airborne surveys of two of the fires were conducted near Sheridan, Wyoming. The fires occur in natural outcrops and in abandoned mines, all containing Paleocene-age subbituminous coals.


Tuesday, March 06, 2012

VARBOOT: A spatial bootstrap program for semivariogram uncertainty assessment

Outside Publication: Computers & Geosciences
In applied geostatistics, the semivariogram is commonly estimated from experimental data, producing an empirical semivariogram for a specified number of discrete lags A computer program is described and provided for the assessment of those uncertainties.


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