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Wednesday, November 28, 2012

Remaining Recoverable Petroleum in Giant Oil Fields of the Los Angeles Basin, Southern California

USGS Publication: Fact Sheet 2012–3120, v. 1.1
Using a probabilistic geology-based methodology, a team of U.S. Geological Survey (USGS) scientists recently assessed the remaining recoverable oil in 10 oil fields of the Los Angeles Basin in southern California. The results of the assessment suggest that between 1.4 and 5.6 billion barrels of additional oil could be recovered from those fields with existing technology.


Wednesday, November 28, 2012

Sequential Simulation Approach to Modeling of Multi-seam Coal Deposits with an Application to the Assessment of a Louisiana Lignite

Outside Publication: Natural Resources Research
There are multiple ways to characterize uncertainty in the assessment of coal resources, but not all of them are equally satisfactory. Increasingly, the tendency is toward borrowing from the statistical tools developed in the last 50 years for the quantitative assessment of other mineral commodities. Here, we briefly review the most recent of such methods and formulate a procedure for the systematic assessment of multi-seam coal deposits taking into account several geological factors, such as fluctuations in thickness, erosion, oxidation, and bed boundaries. 


Friday, November 16, 2012

Assessment of Undiscovered Petroleum Resources of the Amerasia Basin Petroleum Province

USGS Publication: Scientific Investigations Report 2012–5146
The Amerasia Basin Petroleum Province encompasses the Canada Basin and the sediment prisms along the Alaska and Canada margins, outboard from basinward margins (hingelines) of the rift shoulders that formed during extensional opening of the Canada Basin. The province includes the Mackenzie delta and slope, the outer shelves and marine slopes along the Arctic margins of Alaska and Canada, and the deep Canada Basin.


Friday, November 16, 2012

Assessment of Undiscovered Petroleum Resources of the Arctic Alaska Petroleum Province

USGS Publication: Scientific Investigations Report 2012–5147
The Arctic Alaska Petroleum Province encompasses all lands and adjacent continental shelf areas north of the Brooks Range-Herald arch tectonic belts and south of the northern (outboard) margin of the Alaska rift shoulder. Even though only a small part is thoroughly explored, it is one of the most prolific petroleum provinces in North America, with total known resources (cumulative production plus proved reserves) of about 28 billion barrels of oil equivalent.


Thursday, November 15, 2012

Preliminary Catalog of the Sedimentary Basins of the United States

USGS Publication: Open-File Report 2012–1111
One hundred forty-four sedimentary basins (or groups of basins) in the United States (both onshore and offshore) are identified, located, and briefly described as part of a Geographic Information System (GIS) data base in support of the Geologic Carbon Dioxide Sequestration National Assessment Project (Brennan and others, 2010). This catalog of basins is designed to provide a check list and basic geologic framework for compiling more detailed geologic and reservoir engineering data for this project and other future investigations.


Tuesday, November 13, 2012

Mercury and Halogens in Coal

Their Role in Determining Mercury Emissions From Coal Combustion

USGS Publication: Fact Sheet 2012–3122
The USGS domestic and international coal databases and research on trace elements in coal contain much information that is relevant to understanding how Hg in coal occurs and why some coals contain more Hg than others.


Thursday, November 08, 2012

Mapping Grasslands Suitable for Cellulosic Biofuels in the Greater Platte River Basin, U.S.

USGS Publication: Fact Sheet 2012–3126
The main objective of this study is to identify grasslands in the Great Plains that are potentially suitable for cellulosic feedstock (such as switchgrass) production. Producing ethanol from noncropland holdings (such as grassland) will minimize the effects of biofuel developments on global food supplies. 


Thursday, November 08, 2012

Using simulated maps to interpret the geochemistry, formation and quality of the Blue Gem Coal Bed, Kentucky, USA

Outside Publication: International Journal of Coal Geology
This study presents geostatistical simulations of coal-quality parameters, major oxides and trace metals for an area covering roughly 812 km2 of the Blue Gem coal bed in southeastern Kentucky, USA. The Blue Gem, characterized by low ash yield and low sulfur content, is an important economic resource. Past studies have characterized the Blue Gem's geochemistry, palynology and petrography and inferred a depositional setting of a planar peat deposit that transitioned to slightly domed later in its development.


Thursday, November 01, 2012

Assessment of Undiscovered Conventional Oil and Gas Resources of Six Geologic Provinces of China, 2011

USGS Publication: Fact Sheet 2012–3117
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of undiscovered conventional petroleum resources in six geologic provinces of China at 14.9 billion barrels of oil, 87.6 trillion cubic feet of natural gas, and 1.4 billion barrels of natural-gas liquids.


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