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.
Gulf Coast Geologic Energy Assessments
Below are data or web applications associated with this project.
Delta log R total organic carbon estimates for the Tuscaloosa marine shale, U.S.A.
This dataset contains estimated total organic carbon (TOC) calculated using the delta log R (dlogR) method, developed by Passey and others (1990), within BasinMod modeling software for the Tuscaloosa marine shale (TMS) in southwestern Mississippi, U.S.A. BasinMod is a modeling software developed by Platte River Associates, Inc. Using version 2021-03-03 of the software, sonic and resistivity logs a
United States Gulf Coast Basin Curated Wells and Logs Database (ver. 3.0, June 2024)
Wireline geophysical logging curves and infrared spectral data for the USGS Gulf Coast #1 West Woodway research wellbore, McLennan County, Texas
Apatite and zircon U/Pb and fission track geochronologic and thermochronologic data along the Fall Line of the southeastern United States
U-Pb ages of detrital zircons in Paleogene strata of the Gulf Coast
USGS Gulf Coast Source Rock Database (ver. 2.0, October 2023)
Data Release for "Comparability and reproducibility of biomarker ratio values measured by GC-QQQ-MS"
Input forms for 2019 water and proppant assessment of the Eagle Ford Group, Gulf Coast, Texas
Oil-source rock correlation studies in the unconventional Upper Cretaceous Tuscaloosa marine shale petroleum system, Mississippi and Louisiana, USA (2019)
USGS Gulf Coast Petroleum Systems and National and Global Oil and Gas Assessment Projects-Louisiana-Mississippi Salt Basins and Western Gulf Provinces, Upper Cretaceous Tuscaloosa Marine Shale Assessment Unit Boundaries and Assessment Input Data Forms
Geochemistry data for the USGS Gulf Coast #1 West Woodway core - A thermally immature core of the Eagle Ford Group in central Texas
Petroleum geology data from Cenozoic rock samples in the eastern U.S. Gulf Coast collected 2014 to 2016
Below are publications associated with this project.
Comparison of measured versus modeled TOC in the Tuscaloosa marine shale of Southwestern Mississippi, U.S.A.
Spatial distribution of API gravity and gas/oil ratios for petroleum accumulations in Upper Cretaceous strata of the San Miguel, Olmos, and Escondido Formations of the south Texas Maverick Basin—Implications for petroleum migration and charge history
Defining the hafnium isotopic signature of the Appalachian orogen through analysis of detrital zircons from modern fluvial sediments
Tuscaloosa Marine Shale, Gulf Coast Basin, Louisiana and Mississippi
Multimineral petrophysics of thermally immature Eagle Ford Group and Cretaceous mudstones, U.S. Geological Survey Gulf Coast 1 research wellbore in central Texas
Quantitative modeling of secondary migration: Understanding the origin of natural gas charge of the Haynesville Formation in the Sabine Uplift area of Louisiana and Texas
Geochemical and mineralogical properties of Boquillas Shale geochemical reference material ShBOQ-1
Multivariate classification of the crude oil petroleum systems in southeast Texas, USA, using conventional and compositional data analysis of biomarkers
Characterization of the unconventional Tuscaloosa marine shale reservoir in southwestern Mississippi, USA: Insights from optical and SEM petrography
Trends in thermal maturity indicators for the organic sulfur-rich Eagle Ford Shale
Detrital zircon age spectra of middle and upper Eocene outcrop belts, U.S. Gulf Coast region
Oil-source rock correlation studies in the unconventional Upper Cretaceous Tuscaloosa marine shale (TMS) petroleum system, Mississippi and Louisiana, USA
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.
Gulf Coast Geologic Energy Assessments
Below are data or web applications associated with this project.
Delta log R total organic carbon estimates for the Tuscaloosa marine shale, U.S.A.
This dataset contains estimated total organic carbon (TOC) calculated using the delta log R (dlogR) method, developed by Passey and others (1990), within BasinMod modeling software for the Tuscaloosa marine shale (TMS) in southwestern Mississippi, U.S.A. BasinMod is a modeling software developed by Platte River Associates, Inc. Using version 2021-03-03 of the software, sonic and resistivity logs a
United States Gulf Coast Basin Curated Wells and Logs Database (ver. 3.0, June 2024)
Wireline geophysical logging curves and infrared spectral data for the USGS Gulf Coast #1 West Woodway research wellbore, McLennan County, Texas
Apatite and zircon U/Pb and fission track geochronologic and thermochronologic data along the Fall Line of the southeastern United States
U-Pb ages of detrital zircons in Paleogene strata of the Gulf Coast
USGS Gulf Coast Source Rock Database (ver. 2.0, October 2023)
Data Release for "Comparability and reproducibility of biomarker ratio values measured by GC-QQQ-MS"
Input forms for 2019 water and proppant assessment of the Eagle Ford Group, Gulf Coast, Texas
Oil-source rock correlation studies in the unconventional Upper Cretaceous Tuscaloosa marine shale petroleum system, Mississippi and Louisiana, USA (2019)
USGS Gulf Coast Petroleum Systems and National and Global Oil and Gas Assessment Projects-Louisiana-Mississippi Salt Basins and Western Gulf Provinces, Upper Cretaceous Tuscaloosa Marine Shale Assessment Unit Boundaries and Assessment Input Data Forms
Geochemistry data for the USGS Gulf Coast #1 West Woodway core - A thermally immature core of the Eagle Ford Group in central Texas
Petroleum geology data from Cenozoic rock samples in the eastern U.S. Gulf Coast collected 2014 to 2016
Below are publications associated with this project.
Comparison of measured versus modeled TOC in the Tuscaloosa marine shale of Southwestern Mississippi, U.S.A.
Spatial distribution of API gravity and gas/oil ratios for petroleum accumulations in Upper Cretaceous strata of the San Miguel, Olmos, and Escondido Formations of the south Texas Maverick Basin—Implications for petroleum migration and charge history
Defining the hafnium isotopic signature of the Appalachian orogen through analysis of detrital zircons from modern fluvial sediments
Tuscaloosa Marine Shale, Gulf Coast Basin, Louisiana and Mississippi
Multimineral petrophysics of thermally immature Eagle Ford Group and Cretaceous mudstones, U.S. Geological Survey Gulf Coast 1 research wellbore in central Texas
Quantitative modeling of secondary migration: Understanding the origin of natural gas charge of the Haynesville Formation in the Sabine Uplift area of Louisiana and Texas
Geochemical and mineralogical properties of Boquillas Shale geochemical reference material ShBOQ-1
Multivariate classification of the crude oil petroleum systems in southeast Texas, USA, using conventional and compositional data analysis of biomarkers
Characterization of the unconventional Tuscaloosa marine shale reservoir in southwestern Mississippi, USA: Insights from optical and SEM petrography
Trends in thermal maturity indicators for the organic sulfur-rich Eagle Ford Shale
Detrital zircon age spectra of middle and upper Eocene outcrop belts, U.S. Gulf Coast region
Oil-source rock correlation studies in the unconventional Upper Cretaceous Tuscaloosa marine shale (TMS) petroleum system, Mississippi and Louisiana, USA
Below are news stories associated with this project.