Gulf Coast Geologic Energy Research
USGS Research Drilling Rig in Kinney County, TX, in 2018
Vista of Buda, Eagle Ford, and Austin Formations, Terrell County, TX
The Gulf Coast Geologic Energy Assessments and Research (GEAR) project also conducts research on the properties and processes relevant to the Gulf Coast Jurassic-Cretaceous-Tertiary composite total petroleum system (TPS). This research aims to improve ongoing and future undiscovered, technically recoverable hydrocarbon resources assessments on the onshore and State waters portion of the Gulf Coast basin. Important research avenues include the nature and distribution of source rocks, reservoirs, traps, and seals as well as how the temporal evolution of the TPS affected petroleum migration and accumulations.
Research efforts on the Gulf Coast GEAR project include a focus on Jurassic and Cretaceous petroleum source intervals and charged reservoirs to support the prioritization of hydrocarbon resources assessments in Mesozoic strata. The project also plans to investigate potential energy resources in the Atlantic Coastal Plain provinces and adjacent offshore areas as they are analogous to the Gulf Coast region.
The Gulf Coast GEAR project is also constructing a subsurface geoscience database that will include type logs across the U.S. Gulf Coast basin and contain geophysical logs, interpreted geologic formation top depths, and paleontological data. This effort is a response to the 2018 review of the USGS Energy Resources Program by the U.S. National Academies of Sciences, Engineering, and Medicine, which indicated that the program should improve its ability to make petroleum resource data publicly available in a timely manner. Data from the subsurface geoscience and source rock databases are vital for the characterization of hydrocarbon plays by the stakeholder as well as for potential geologic carbon sequestration, subsurface energy store, or paleoclimate reconstruction.
Another research goal is to conduct more robust and interdisciplinary source rock studies on organic-rich mudstones, which can be considered the foundations of petroleum systems. Source rock properties vary both vertically within a stratigraphic unit and geographically across a basin or region. These spatial patterns of source rock composition variability influence the development of hydrocarbon assessment unit boundaries. Increased understanding of controls on source rock formation, compositional variability, and thermal maturity trends can inform the development of geologic models used in USGS petroleum resource assessments. This research on organic-rich mudstone source rocks may also provide insights into paleoclimate, carbon cycling, and oceanic conditions to better understand how conditions in the past varied and changed over time.
Below are other science projects associated with this project.
Below are data or web applications associated with this project.
Petroleum geology data from Cenozoic rock samples in the eastern U.S. Gulf Coast collected 2014 to 2016
Mercury injection capillary pressure data in the U.S. Gulf Coast Tuscaloosa Group in Mississippi and Louisiana collected 2015 to 2017
Petroleum geology data from Mesozoic rock samples in the eastern U.S. Gulf Coast collected 2011 to 2017
USGS National and Global Oil and Gas Assessment Project-Gulf Coast Mesozoic Province, Haynesville Formation Assessment Units
USGS National and Global Oil and Gas Assessment Project-Gulf Coast Mesozoic Province, Bossier Formation Assessment Units
Below are publications associated with this project.
Oil-source rock correlation studies in the unconventional Upper Cretaceous Tuscaloosa marine shale (TMS) petroleum system, Mississippi and Louisiana, USA
Geochemistry of a thermally immature Eagle Ford Group drill core in central Texas
New method for correcting bottomhole temperatures acquired from wireline logging measurements and calibrated for the onshore Gulf of Mexico Basin, U.S.A.
Carbon dioxide sealing capacity of the Tuscaloosa marine shale: Insights from mercury injection capillary pressure analyses
Methodology for correcting bottomhole temperatures acquired from wireline logging measurements in the onshore U.S. Gulf of Mexico Basin to characterize the thermal regime of total petroleum systems
Using mercury injection pressure analyses to estimate sealing capacity of the Tuscaloosa marine shale in Mississippi, USA: Implications for carbon dioxide sequestration
Correlation of the Eagle Ford Group, Woodbine Group, and equivalent Cenomanian-Turonian Mudstones using regional wireline-log cross sections across the Texas Gulf Coast, U.S.A.
Correlation of the Tuscaloosa marine shale in Mississippi, Louisiana, and east Texas, U.S.A.
Geochemical and mineralogical characterization of the Eagle Ford Shale: Results from the USGS Gulf Coast #1 West Woodway core
Estimating thermal maturity in the Eagle Ford Shale petroleum system using gas gravity data
Geopressure gradient maps of Southern Louisiana, state, and vicinity
A synoptic examination of causes of land loss in southern Louisiana as related to the exploitation of subsurface geologic resources
Below are news stories associated with this project.
The Gulf Coast Geologic Energy Assessments and Research (GEAR) project also conducts research on the properties and processes relevant to the Gulf Coast Jurassic-Cretaceous-Tertiary composite total petroleum system (TPS). This research aims to improve ongoing and future undiscovered, technically recoverable hydrocarbon resources assessments on the onshore and State waters portion of the Gulf Coast basin. Important research avenues include the nature and distribution of source rocks, reservoirs, traps, and seals as well as how the temporal evolution of the TPS affected petroleum migration and accumulations.
Research efforts on the Gulf Coast GEAR project include a focus on Jurassic and Cretaceous petroleum source intervals and charged reservoirs to support the prioritization of hydrocarbon resources assessments in Mesozoic strata. The project also plans to investigate potential energy resources in the Atlantic Coastal Plain provinces and adjacent offshore areas as they are analogous to the Gulf Coast region.
The Gulf Coast GEAR project is also constructing a subsurface geoscience database that will include type logs across the U.S. Gulf Coast basin and contain geophysical logs, interpreted geologic formation top depths, and paleontological data. This effort is a response to the 2018 review of the USGS Energy Resources Program by the U.S. National Academies of Sciences, Engineering, and Medicine, which indicated that the program should improve its ability to make petroleum resource data publicly available in a timely manner. Data from the subsurface geoscience and source rock databases are vital for the characterization of hydrocarbon plays by the stakeholder as well as for potential geologic carbon sequestration, subsurface energy store, or paleoclimate reconstruction.
Another research goal is to conduct more robust and interdisciplinary source rock studies on organic-rich mudstones, which can be considered the foundations of petroleum systems. Source rock properties vary both vertically within a stratigraphic unit and geographically across a basin or region. These spatial patterns of source rock composition variability influence the development of hydrocarbon assessment unit boundaries. Increased understanding of controls on source rock formation, compositional variability, and thermal maturity trends can inform the development of geologic models used in USGS petroleum resource assessments. This research on organic-rich mudstone source rocks may also provide insights into paleoclimate, carbon cycling, and oceanic conditions to better understand how conditions in the past varied and changed over time.
Below are other science projects associated with this project.
Below are data or web applications associated with this project.
Petroleum geology data from Cenozoic rock samples in the eastern U.S. Gulf Coast collected 2014 to 2016
Mercury injection capillary pressure data in the U.S. Gulf Coast Tuscaloosa Group in Mississippi and Louisiana collected 2015 to 2017
Petroleum geology data from Mesozoic rock samples in the eastern U.S. Gulf Coast collected 2011 to 2017
USGS National and Global Oil and Gas Assessment Project-Gulf Coast Mesozoic Province, Haynesville Formation Assessment Units
USGS National and Global Oil and Gas Assessment Project-Gulf Coast Mesozoic Province, Bossier Formation Assessment Units
Below are publications associated with this project.
Oil-source rock correlation studies in the unconventional Upper Cretaceous Tuscaloosa marine shale (TMS) petroleum system, Mississippi and Louisiana, USA
Geochemistry of a thermally immature Eagle Ford Group drill core in central Texas
New method for correcting bottomhole temperatures acquired from wireline logging measurements and calibrated for the onshore Gulf of Mexico Basin, U.S.A.
Carbon dioxide sealing capacity of the Tuscaloosa marine shale: Insights from mercury injection capillary pressure analyses
Methodology for correcting bottomhole temperatures acquired from wireline logging measurements in the onshore U.S. Gulf of Mexico Basin to characterize the thermal regime of total petroleum systems
Using mercury injection pressure analyses to estimate sealing capacity of the Tuscaloosa marine shale in Mississippi, USA: Implications for carbon dioxide sequestration
Correlation of the Eagle Ford Group, Woodbine Group, and equivalent Cenomanian-Turonian Mudstones using regional wireline-log cross sections across the Texas Gulf Coast, U.S.A.
Correlation of the Tuscaloosa marine shale in Mississippi, Louisiana, and east Texas, U.S.A.
Geochemical and mineralogical characterization of the Eagle Ford Shale: Results from the USGS Gulf Coast #1 West Woodway core
Estimating thermal maturity in the Eagle Ford Shale petroleum system using gas gravity data
Geopressure gradient maps of Southern Louisiana, state, and vicinity
A synoptic examination of causes of land loss in southern Louisiana as related to the exploitation of subsurface geologic resources
Below are news stories associated with this project.