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Monday, October 27, 2014

Geologic Framework for the National Assessment of Carbon Dioxide Storage Resources—Williston Basin, Central Montana Basins, and Montana Thrust Belt Study Areas

USGS Publication - Open-File Report 2012-1024-J
Chapter J - The 2007 Energy Independence and Security Act directs the U.S. Geological Survey (USGS) to conduct a national assessment of potential geologic storage resources for carbon dioxide (CO2). The methodology used by the USGS for the national CO2 assessment follows that of previous USGS work. This methodology is non-economic and is intended to be used at regional to sub-basinal scales.


Monday, October 20, 2014

USGS Updates the National Produced Waters Geochemical Database and Map Viewer!

Technical Announcement
The USGS has updated the National Produced Waters Geochemical Database and Map Viewer to include trace elements, isotopes, and time-series data, as well as nearly 100,000 new samples with greater spatial coverage and from both conventional and unconventional well types.


Wednesday, September 24, 2014

Assessment Potential Shale-Oil and Shale-Gas Resources in Silurian Shales of Jordan, 2014

National and Global Petroleum Assessment Project

USGS Publication: Fact Sheet 2014–3082
Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 11 million barrels of potential shale-oil and 320 billion cubic feet of shale-gas resources in Silurian shales of Jordan.


Wednesday, September 24, 2014

Map of Assessed Tight-Gas Resources in the United States, 2014

National Assessment of Oil and Gas Project

USGS Publication: Digital Data Series DDS–69–HH
This report presents a digital map of tight-gas resource assessments in the United States as part of the USGS National Assessment of Oil and Gas Project. Using a geology-based assessment methodology, the USGS quantitatively estimated potential volumes of undiscovered, technically recoverable natural gas resources within tight-gas assessment units (AUs). This is the second digital map product in a series of USGS unconventional oil and gas resource maps.


Monday, September 01, 2014

Application of binomial-edited CPMG to shale characterization

Outside Publication: Journal of Magnetic Resonance
Unconventional shale resources may contain a significant amount of hydrogen in organic solids such as kerogen, but it is not possible to directly detect these solids with many NMR systems. Binomial-edited pulse sequences capitalize on magnetization transfer between solids, semi-solids, and liquids to provide an indirect method of detecting solid organic materials in shales. ...


Friday, August 15, 2014

Assessment of unconventional oil and gas resources in Northeast Mexico, 2014

National and Global Petroleum Assessment

USGS Publication: Fact Sheet 2014–3047
Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 0.78 billion barrels of unconventional oil, 23.5 trillion cubic feet of unconventional gas, and 0.88 billion barrels of natural gas liquids in the Sabinas Basin, Burgos Basin, and Tampico-Misantla Basin provinces of northeast Mexico.


Monday, August 11, 2014

Detailed North-South Cross Section Showing Environments of Deposition, Organic Richness, and Thermal Maturities of Lower Tertiary Rocks in the Uinta Basin, Utah

USGS Publication: Scientific Investigations Map 3304The Uinta Basin of northeast Utah has produced large amounts of hydrocarbons from lower Tertiary strata since the 1960s. Recent advances in drilling technologies, in particular the development of efficient methods to drill and hydraulically fracture horizontal wells, has spurred renewed interest in producing hydrocarbons from unconventional low-permeability dolomite and shale reservoirs in the lacustrine, Eocene Green River Formation. ...


Friday, July 25, 2014

Inference of strata separation and gas emission paths in longwall overburden using continuous wavelet transform of well logs and geostatistical simulation

Outside Publication: Journal of Applied Geophysics
Prediction of potential methane emission pathways from various sources into active mine workings or sealed gobs from longwall overburden is important for controlling methane and for improving mining safety. The aim of this paper is to infer strata separation intervals and thus gas emission pathways from standard well log data. The proposed technique was applied to well logs acquired through the Mary Lee/Blue Creek coal seam of the Upper Pottsville Formation in the Black Warrior Basin, Alabama, using well logs from a series of boreholes aligned along...


Tuesday, July 22, 2014

Spatial and Stratigraphic Distribution of Water in Oil Shale of the Green River Formation Using Fischer Assay, Piceance Basin, Northwestern Colorado

The spatial and stratigraphic distribution of water in oil shale of the Eocene Green River Formation in the Piceance Basin of northwestern Colorado was studied in detail using some 321,000 Fischer assay analyses in the U.S. Geological Survey oil-shale database. The oil-shale section was subdivided into 17 roughly time-stratigraphic intervals, and the distribution of water in each interval was assessed separately. This study was conducted in part to determine whether water produced during retorting of oil shale could provide a significant amount of the water needed for an oil-shale industry. Recent estimates...


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