Energy Resources Program

Publications

Filter Total Items: 2,457
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Year Published: 2020

Conceptual framework and approach for conducting a geoenvironmental assessment of undiscovered uranium resources

This report presents a novel conceptual framework and approach for conducting a geologically based environmental assessment, or geoenvironmental assessment, of undiscovered uranium resources within an area likely to contain uranium deposits. The framework is based on a source-to-receptor model that prioritizes the most likely contaminant sources,...

Gallegos, Tanya J.; Walton-Day, Katherine; Seal, Robert R.
Gallegos, T.J., Walton-Day, K., and Seal, R.R., II, 2020, Conceptual framework and approach for conducting a geoenvironmental assessment of undiscovered uranium resources: U.S. Geological Survey Scientific Investigations Report 2018–5104, 28 p., https://doi.org/10.3133/sir20185104.

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Year Published: 2020

Modeling geologic sequestration of carbon dioxide in a deep saline carbonate reservoir with TOUGH2–ChemPlugin, a new tool for reactive transport modeling

This paper outlines the development and demonstration of a new tool, TOUGH2–ChemPlugin (T2CPI) for predicting rock–water–CO2 interaction following injection of supercritical CO2 into a heterogeneous carbonate system. Specifically, modeling capabilities of TOUGH2, which examines multiphase flow and supercritical CO2 behavior, were...

Roberts-Ashby, Tina L.; Berger, Peter M.; Cunningham, Jeffrey A.; Kumar, Ram; Blondes, Madalyn S.

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Year Published: 2020

Nanoscale molecular composition of solid bitumen from the Eagle Ford Group across a natural thermal maturity gradient

Microscopic solid bitumen is a petrographically defined secondary organic matter residue produced during petroleum generation and subsequent oil transformation. The presence of solid bitumen impacts many reservoir properties including porosity, permeability, and hydrocarbon generation and storage, among others. Furthermore, solid bitumen...

Jubb, Aaron M.; Birdwell, Justin E.; Hackley, Paul C.; Hatcherian, Javin J.; Qu, Jing

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Year Published: 2020

Trends in thermal maturity indicators for the organic sulfur-rich Eagle Ford Shale

Thermal maturity is critical to evaluate petroleum systems and to interpret biomarker results for paleoenvironmental and geobiology studies. Many thermal maturity indices were developed for marine source rocks containing type II kerogen, but their behavior in organic sulfur-rich source rocks requires more investigation. Here, we present...

French, Katherine L.; Birdwell, Justin E.; Lewan, Michael

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Year Published: 2020

Compositional analysis of formation water geochemistry and microbiology of commercial and carbon dioxide-rich wells in the southwestern United States

Studies of naturally occurring subsurface carbon dioxide (CO2) accumulations can provide useful information for potential CO2 injection projects; however, the microbial communities and formation water geochemistry of most reservoirs are understudied. Formation water and microbial biomass were sampled at four CO2-rich reservoir sites: two within...

Shelton, Jenna L.; Andrews, Robert S.; Akob, Denise M.; DeVera, Christina A.; Mumford, Adam C.; Engle, Mark; Plampin, Michelle R.; Brennan, Sean T.
Shelton, J.L., Andrews, R.S., Akob, D.M., DeVera, C.A., Mumford, A.C., Engle, M., Plampin, M.R., and Brennan, S.T., 2020, Compositional analysis of formation water geochemistry and microbiology of commercial and carbon dioxide-rich wells in the southwestern United States: U.S. Geological Survey Scientific Investigations Report 2020–5037, 26 p., https://doi.org/10.3133/sir20205037.

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Year Published: 2020

Mineralogy and lithology of the Upper Cretaceous Niobrara Formation determined by hyperspectral core imaging

Sections of the Upper Cretaceous (Coniacian to Campanian) Niobrara Formation in two cores from Kansas and Colorado, the Amoco Rebecca Bounds and USGS Portland 1, respectively, were examined by hyperspectral core imaging and analysis. A spectral imaging system combining high-resolution photography (50 μm), 3D laser profiling (20 μm), and near-...

Birdwell, Justin E.; Fontenot, Lionel C.; Martini, Brigette

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Year Published: 2020

A two-stage step-wise framework for fast optimization of well placement in coalbed methane reservoirs

Coalbed methane (CBM) has emerged as a clean energy resource in the global energy mix, especially in countries such as Australia, China, India and the USA. The economical and successful development of CBM requires a thorough evaluation and optimization of well placement prior to field-scale exploitation. This paper presents a two-stage, step-wise...

Zhang, Jiyuan; Feng, Qihong; Zhang, Xianmin; Bai, Jia; Karacan, Cevat O.; Elsworth, Derek

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Year Published: 2020

Assessment of continuous oil and gas resources in Lower Silurian Shales of the Arabian Peninsula, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 4.6 billion barrels of oil and 561 trillion cubic feet of gas in the Lower Silurian Shale Total Petroleum System of the Arabian Peninsula.

Schenk, Christopher J.; Mercier, Tracey J.; Woodall, Cheryl A.; Tennyson, Marilyn E.; Finn, Thomas M.; Brownfield, Michael E.; Marra, Kristen R.; Le, Phuong A.; Drake, Ronald M.; Kinney, Scott A.
Schenk, C.J., Mercier, T.J., Woodall, C.A., Tennyson, M.E., Finn, T.M., Brownfield, M.E., Marra, K.R., Le, P.A., Drake, R.M., II, and Kinney, S.A., 2020, Assessment of continuous oil and gas resources in lower Silurian shales of the Arabian Peninsula, 2019: U.S. Geological Survey Fact Sheet 2019–3070, 4 p., https://doi.org/10.3133/fs20193070.

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Year Published: 2020

Assessment of tight-gas resources in the Grand Erg/Ahnet Province of Algeria, 2019

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 30.5 trillion cubic feet of tight gas in the Grand Erg/Ahnet Province of Algeria.

Brownfield, Michael E.; Schenk, Christopher J.; Mercier, Tracey J.; Tennyson, Marilyn E.; Woodall, Cheryl A.; Finn, Thomas M.; Le, Phuong A.; Pitman, Janet K.; Drake, Ronald M.; Gaswirth, Stephanie B.; Leathers-Miller, Heidi M.
Brownfield, M.E., Schenk, C.J., Mercier, T.J., Tennyson, M.E., Woodall, C.A., Finn, T.M., Le, P.A., Pitman, J.K., Drake, R.M., II, Gaswirth, S.B., and Leathers-Miller, H.M., 2020, Assessment of tight-gas resources in the Grand Erg/Ahnet Province of Algeria, 2019: U.S. Geological Survey Fact Sheet 2020–3003, 2 p., https://doi.org/10.3133/fs20203003.

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Year Published: 2020

Well predictive performance of play-wide and Subarea Random Forest models for Bakken productivity

In recent years, geologists and petroleum engineers have struggled to clearly identify the mechanisms that drive productivity in horizontal, hydraulically-fractured oil wells producing from the middle member of the Bakken formation. This paper fills a gap in the literature by showing how this play’s heterogeneity affects factors that drive well...

Attanasi, Emil D.; Freeman, Philip A.; Coburn, Tim

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Year Published: 2020

Surface to subsurface correlation of the Middle-Upper Triassic Shublik Formation within a revised sequence stratigraphic framework

Recent work on cores and outcrops of the Middle-Upper Triassic Shublik Formation has facilitated surface to subsurface correlation of depositional sequences across the Alaska North Slope. Five transgressive-regressive depositional sequences have been defined within three large-scale stratigraphic units. Outcrop spectral gamma-ray (GR) profiles...

Rouse, William A.; Whidden, Katherine J.; Dumoulin, Julie A.; Houseknecht, David W.

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Year Published: 2020

Methodology for estimating the prospective CO2 storage resource of residual oil zones at the national and regional scale

Residual oil zones (ROZs) are increasingly gaining interest as potential reservoirs for carbon dioxide (CO2) storage. Here, we present a national- and regional-scale methodology for estimating prospective CO2 storage resources in residual oil zones. This methodology uses a volumetric equation that accounts for CO2 storage as a free phase...

Sanguinito, Sean; Singh, Harpreet; Myshakin, Evgeniy M.; Goodman, Angela L.; Dilmore, Robert M.; Grant, Timothy C.; Morgan, David; Bromhal, Grant; Warwick, Peter D.; Brennan, Sean T.; Freeman, Philip A.; Karacan, C. Özgen; Gorecki, Charles; Peck, Wesley; Burton-Kelly, Matthew; Dotzenrod, Neil; Frailey, Scott; Pawar, Rajesh