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Thursday, November 02, 2017

High-resolution seismic characterization of the gas and gas hydrate system at Green Canyon 955, Gulf of Mexico, USA

Outside Publication: Marine and Petroleum Geology
The Pliocene and Pleistocene sediments at lease block Green Canyon 955 (GC955) in the Gulf of Mexico include sand-rich strata with high saturations of gas hydrate; these gas hydrate accumulations and the associated geology have been characterized over the past decade using conventional industry three-dimensional...

Wednesday, February 22, 2017

USGS National and Global Oil and Gas Assessment Project-Burgos, Tampico-Misantla, and Sabinas Provinces, Northeast Mexico, Assessment Unit Boundaries

USGS Publication: Data Release
The Assessment Unit is the fundamental unit used in the National and Global Petroleum Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System...

Monday, February 13, 2017

Geologic assessment of undiscovered oil and gas resources—

Lower Cretaceous Albian to Upper Cretaceous Cenomanian carbonate rocks of the Fredericksburg and Washita Groups, United States Gulf of Mexico Coastal Plain and State Waters

USGS Publication: Open-File Report 2016-1199
In 2010, the U.S. Geological Survey (USGS) assessed Lower Cretaceous Albian to Upper Cretaceous Cenomanian carbonate rocks of the Fredericksburg and Washita Groups and their equivalent units for technically recoverable, undiscovered hydrocarbon resources underlying onshore lands and State Waters of the Gulf Coast region of the United States...

Monday, January 30, 2017

Comparing uncorrected and corrected bottom-hole temperatures using published correction methods for the onshore U.S. Gulf of Mexico

USGS Publication: Data Release
Wireline logging temperature readings are known to be imprecise and need to be corrected to more accurately show what the formation temperature is. One issue with correcting logging temperatures is what correction factor to use. Because there are so many correction factors and they are based on different types of data and locations choosing a correction factor for a particular...

Monday, September 22, 2014

A Synoptic Examination of Causes of Land Loss in Southern Louisiana as Related to the Exploitation of Subsurface Geologic Resources

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, August 11, 2014

Asphaltene content and composition as a measure of Deepwater Horizon oil spill losses within the first 80 days

Outside Publication: Organic Geochemistry
The composition and content of asphaltenes in spilled and original wellhead oils from the Deepwater Horizon (DWH) incident provide information on the amount of original oil lost and the processes most responsible for the losses within the first 80 days of the active spill. Spilled oils were collected from open waters, coastal waters and coastal sediments during the incident...


Tuesday, April 15, 2014

Geologic Framework for the National Assessment of Carbon Dioxide Storage Resources

U.S. Gulf Coast

USGS Publication: Open-File Report 2012–1024–H
This report presents 27 storage assessment units (SAUs) within the United States (U.S.) Gulf Coast. At least nine major depositional packages contain porous strata that are potentially suitable for geologic carbon dioxide (CO2) sequestration within the region. For each SAU identified within these packages, the areal distribution of porous rock that is suitable for geologic CO2sequestration is discussed, along with a description of the geologic characteristics that influence the potential CO2 storage volume and reservoir performance.


Thursday, January 16, 2014

Geologic Assessment of Undiscovered Oil and Gas Resources—Oligocene Frio and Anahuac Formations

United States Gulf of Mexico Coastal Plain and State Waters

USGS Publication: Open-File Report 2013–1257
The Oligocene Frio and Anahuac Formations were assessed as part of the 2007 U.S. Geological Survey (USGS) assessment of Tertiary strata of the U.S. Gulf of Mexico Basin onshore and State waters.  Estimated total mean values of technically recoverable, undiscovered resources are 172 million barrels of oil (MMBO), 9.4 trillion cubic feet of natural gas (TCFG), and 542 million barrels of natural gas liquids for all of the Frio and Anahuac assessment units.


Thursday, November 14, 2013

New seismic data acquired over known gas hydrate occurrences in the deepwater Gulf of Mexico

Outside Publication: Department of Energy-National Energy Technology Laboratory  
The U.S. Geological Survey (USGS) led seismic acquisition in the Gulf of Mexico from April 18 to May 3, 2013, collecting ocean-bottomseismometer (OBS) and high-resolution 2D data at lease blocks Green Canyon 955 (GC955) and Walker Ridge 313 (WR313). This collaborative effort among the U.S Department of Energy (DOE), the U.S. Bureau of Ocean Energy Management (BOEM) and the USGS was conducted to provide improved imaging and characterization of the known gas hydrate accumulations at these study sites.


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Page Last Modified: Wednesday, December 03, 2014