Tuesday, November 18, 2014
Chemical and isotopic tracers of microbial–brine–rock–CO2 interactions
Outside Publication: Applied Geochemistry
The “2800’ sandstone” of the Olla oil field is an oil and gas-producing reservoir in a coal-bearing interval of the Paleocene–Eocene Wilcox Group in north-central Louisiana, USA. In the 1980s, this producing unit was flooded with CO2 in an enhanced oil recovery (EOR) project, leaving ∼30% of the injected CO2 in the 2800’ sandstone post-injection...
Wednesday, November 12, 2014
USGS Publication: Fact Sheet 2014-3104
Significant quantities of water are present in hydrocarbon reservoirs. When brought to the land surface during oil, gas, and coalbed methane production, the water—either naturally occurring or injected as a method to enhance production—is termed produced water. Produced water is currently managed through processes such as recycling, treatment and discharge, spreading on roads, evaporation or infiltration, and deep well injection.
Monday, October 27, 2014
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
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, October 01, 2014
Outside Publication: Geochimica et Cosmochimica Acta
In the Phuong Dong gas condensate field, Cuu Long Basin, Vietnam, hydrocarbon inclusions in quartz trapped a variety of petroleum fluids in the gas zone. Based on the attributes of the oil inclusion assemblages (fluorescence colour of the oil, bubble size, presence of bitumen), the presence of a palaeo-oil column is inferred prior to migration of gas into the reservoir. When a palaeo-oil column is displaced by gas, a residual volume fraction of oil remains in pores....
Wednesday, September 24, 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
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 22, 2014
Outside Publication: Journal of Coastal Research
Historic wetland losses along the Gulf of Mexico coastline have long given support to the idea that the observed changes do not follow the conventional marine erosion of a quasi-stable continental mass. Deterioration of the Mississippi delta is no exception. In an assessment of 33 of the major deltas in the world, Syvitski et al. (2009 found that 85% of them face areal reduction...
Monday, September 01, 2014
Upper Devonian-Mississippian stratigraphic framework of the Arkoma Basin and distribution of potential source-rock facies in the Woodford–Chattanooga and Fayetteville–Caney shale-gas systems
Outside Publication: AAPG Bulletin
Wireline logs were used to document the stratigraphic framework of Upper Devonian–Mississippian strata in the Arkoma Basin, and maps of high-gamma ray (HGR) log response were used to analyze the spatial distribution of potential source rocks in the Woodford–Chattanooga and Fayetteville–Caney shale-gas systems...
Page Last Modified: Friday, August 01, 2014