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Tuesday, November 18, 2014

Fate of injected CO2 in the Wilcox Group, Louisiana, Gulf Coast Basin

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...


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...


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

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.


Friday, March 14, 2014

Series of Five Maps Characterizing Geopressure Gradients Based on Mud Weight Measurements

Covering Part of Southern Louisiana, State, and Federal Waters

Outside Publication: AAPG Datapages
This series of five maps characterizes the subsurface pressure system of southern Louisiana, including the associated State and Federal waters. The five contour maps in this series characterize the depth to the surface defined by the first occurrence of isopressure gradients ranging from 0.60 psi/ft to 1.00 psi/ft, in 0.10-psi/ft increments. The geographical extent of this geopressure-gradient model is delineated on the maps, which encompass one of the most densely drilled regions of southern Louisiana and adjacent areas. 


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.


Friday, August 30, 2013

Sediments in the Gulf of Mexico

Comparison of Methods for Predicting Shear-Wave Velocities of Unconsolidated Shallow Sediments in the Gulf of Mexico

Publication: Scientific Investigations Report
Accurate shear-wave velocities for shallow sediments are important for a variety of seismic applications such as inver-sion and amplitude versus offset analysis. During the U.S. Department of Energy-sponsored Gas Hydrate Joint Industry Project Leg II, shear-wave velocities were measured at six wells in the Gulf of Mexico using the logging-while-drilling SonicScope acoustic tool.


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Overview

The Gulf Coast Region is a physiographic province extending from Texas to Florida and encompasses the coastal plain, low hills, and deltas of the Gulf of Mexico. This is a geologically stable area characterized by low relief terraces extending to the continental shelf. Sediments consist of coastal plain deposits and thick land-derived sediments prograding from the Mississippi River delta system; ultimately transitioning to evaporite and carbonate deposits offshore. Coastlines exhibit wave and delta dominated features and landforms such as barrier islands, bays, and marshes. The Mississippi River also supports a diverse economy in the region. A large percentage of the present and future energy resources of the United States are located in the Gulf Coast Region, highlighting the importance for energy research and assessments. This web site provides access to the Energy Resources Program research activities and products within the Gulf Coast Region.

Highlighted Gulf Coast Assessment Publications

Select product areas on the stratigraphic column below to view corresponding USGS oil and gas assessment publications:

Top of Page2001 South Florida Basin Geologic Report 2007 Cretaceous-Tertiary Coal beds Fact Sheet2003 Navarro and Taylor Fact Sheet2006 Navarro and  Taylor Groups Geologic Reports2011 Austin Chalk and Tokio and Eutaw Formations Fact Sheet2007 Tertiary Strata Fact Sheet2011 Eagle Ford Fact Sheet2007 Tuscaloosa and Woodbine Fact Sheet2010 Jurassic and Cretaceous Strata Fact Sheet2002 Cotton Valley Fact Sheet2002 Travis Peak-Hosston Formations Fact Sheet2006 Cotton Valley Group and Travis Peak-Hosston Formations Geologic Reports2001 South Florida Basin Geologic Report

Research

National Oil and gas Assessments: Gulf Coast Focus Area
National Oil and Gas
Assessments

National Oil and Gas Assessments

The USGS has completed several assessments of the Gulf Coast. This information is summarized on the Oil and Gas Assessment Gulf Coast page.


National coal resource Assessment: Gulf Coast Focus Area
National Coal Resource
Assessment

National Coal Resource Assessment

The National Coal Resource Assessment (NCRA) project was a multi-year effort by the U.S. Geological Survey (USGS) Energy Program to identify, characterize, and assess the coal resources that will supply a major part of the Nation’s energy needs during the next few decades. NCRA data and publications are available on the NCRA Gulf Coast page.


Coalbed Methane Assessment: Gulf Coast Focus Area
Coalbed Methane Assessment

Coalbed Methane Assessment

There are coalbed methane assessments for the Gulf Coast currently available.

 

 

 

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Page Last Modified: Wednesday, January 22, 2014

 

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