Energy Resources Program

Publications

Filter Total Items: 2,523
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Year Published: 2021

Assessment of undiscovered conventional oil and gas resources in the eastern Mediterranean area, 2020

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 879 million barrels of conventional oil and 286.2 trillion cubic feet of conventional gas in the eastern Mediterranean area.

Schenk, Christopher J.; Mercier, Tracey J.; Finn, Thomas M.; Woodall, Cheryl A.; Marra, Kristen R.; Leathers-Miller, Heidi M.; Le, Phuong A.; Drake, Ronald M.
Schenk, C.J., Mercier, T.J., Finn, T.M., Woodall, C.A., Marra, K.R., Leathers-Miller, H.M., Le, P.A., and Drake, R.M., II, 2021, Assessment of undiscovered conventional oil and gas resources in the eastern Mediterranean area, 2020 (ver. 1.1): U.S. Geological Survey Fact Sheet 2021−3032, 4 p., https://doi.org/10.3133/fs20213032.

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Year Published: 2021

Insights on geochemical, isotopic, and volumetric compositions of produced water from hydraulically fractured Williston Basin oil wells

Tracing produced water origins from wells hydraulically fractured with freshwater-based fluids is sometimes predicated on assumptions that (1) each geological formation contains compositionally unique brine and (2) produced water from recently hydraulically fractured wells resembles fresher meteoric water more so than produced water from older...

Gallegos, Tanya J.; Doolan, Colin A.; Caldwell, Rodney R.; Engle, Mark A; Varonka, Matthew S.; Birdwell, Justin E.; Jolly, Glenn D.; Coplen, Tyler B.; Oliver, Thomas A.

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Year Published: 2021

Probabilistic methodology for the assessment of original and recoverable coal resources, illustrated with an application to a coal bed in the Fort Union Formation, Wyoming

Executive SummaryThe U.S. Geological Survey (USGS) has been using its Circular 891 for evaluating uncertainty in coal resource assessments for more than 35 years. Calculated cell tonnages are assigned to four qualitative reliability classes depending exclusively on distance to the nearest drill hole. The main appeal of this methodology, simplicity...

Olea, Ricardo A.; Shaffer, Brian N.; Haacke, Jon E.; Luppens, James A.
Olea, R.A., Shaffer, B.N., Haacke, J.E., and Luppens, J.A., 2021, Probabilistic methodology for the assessment of original and recoverable coal resources, illustrated with an application to a coal bed in the Fort Union Formation, Wyoming: U.S. Geological Survey Techniques and Methods 6-G1, 55 p., https://doi.org/10.3133/tm6G1.

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Year Published: 2021

Surface-mining modeling for USGS coal assessments

The value of national coal deposits is determined for the Solid Fuel Energy Resources Assessment and Research Project through economic evaluations using hypothetical mining models. Deposits near the surface are evaluated with the U.S. Geological Survey (USGS) surface-mining model, which is patterned after the standard mining techniques and...

Pierce, Paul E.
Pierce, P.E., 2021, Surface-mining modeling for USGS coal assessments: U.S. Geological Survey Open-File Report 2021–1059, 13 p., https://doi.org/10.3133/ofr20211059.

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Year Published: 2021

Multivariate classification of the crude oil petroleum systems in southeast Texas, USA, using conventional and compositional data analysis of biomarkers

Chemically, petroleum is an extraordinarily complex mixture of different types of hydrocarbons that are now possible to isolate and identify because of advances in geochemistry. Here, we use biomarkers and carbon isotopes to establish genetic differences and similarities among oil samples. Conventional approaches for evaluating biomarker and...

Fitzmoser, Peter; Hron, Karel; Martin-Fernandez, Josep Antoni; Palarea-Albaladejo, Javier; Olea, Ricardo; Martin-Fernandez, J. A; Craddock, William H.

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Year Published: 2021

Relating Tmax and hydrogen index to vitrinite and solid bitumen reflectance in hydrous pyrolysis residues: Comparisons to natural thermal indices

Vitrinite reflectance (VRo; %) generally is considered the most reliable technique to determine the thermal maturity of sedimentary rocks. However, it is a time-consuming process to collect reflectance (Ro; %) measurements and is subjective to the interpretation of each trained technician, who must be able to discern between ...

Lohr, Celeste D.; Hackley, Paul C.

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Year Published: 2021

Insights on the characteristics and sources of gas from an underground coal mine using compositional data analysis

Coal mine gas originates from the gas emission zone (GEZ) of the mine, as well as the longwall face and pillars. Gas emissions are controlled directly at the sources using horizontal or vertical boreholes drilled from surface or from the entries in advance of mining, or it is captured from the fractured and caved zones (gob) using...

Karacan, C. Özgen; Martín-Fernández, Josep Antoni; Ruppert, Leslie F.; Olea, Ricardo

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Year Published: 2021

Assessment of undiscovered conventional oil and gas resources in the lower Paleozoic of the Williston Basin Province, 2020

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 83 million barrels of oil and 351 billion cubic feet of gas in lower Paleozoic strata of the Williston Basin Province, North Dakota, Montana, and South Dakota.

Schenk, Christopher J.; Mercier, Tracey J.; Woodall, Cheryl A.; Ellis, Geoffrey S.; Finn, Thomas M.; Le, Phuong A.; Marra, Kristen R.; Leathers-Miller, Heidi M.; Drake, Ronald M.
Schenk, C.J., Mercier, T.J., Woodall, C.A., Ellis, G.S., Finn, T.M., Le, P.A., Marra, K.R., Leathers-Miller, H.M., and Drake, R.M., II, 2021, Assessment of undiscovered conventional oil and gas resources in the lower Paleozoic of the Williston Basin Province, 2020: U.S. Geological Survey Fact Sheet 2020–3063, 2 p., https://doi.org/10.3133/fs20203063.

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Year Published: 2021

Assessment of undiscovered conventional oil and gas resources of upper Paleozoic strata in the Williston Basin Province, 2020

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean oil and gas resources of 134 million barrels of oil and 81 billion cubic feet of gas in upper Paleozoic strata of the Williston Basin Province in North Dakota, Montana, and South Dakota.

Schenk, Christopher J.; Mercier, Tracey J.; Woodall, Cheryl A.; Ellis, Geoffrey S.; Finn, Thomas M.; Le, Phuong A.; Marra, Kristen R.; Leathers-Miller, Heidi M.; Drake, Ronald M.
Schenk, C.J., Mercier, T.J., Woodall, C.A., Ellis, G.S., Finn, T.M., Le, P.A., Marra, K.R., Leathers-Miller, H.M., and Drake, R.M., II, 2021, Assessment of undiscovered conventional oil and gas resources of upper Paleozoic strata in the Williston Basin Province, 2020: U.S. Geological Survey Fact Sheet 2021–3023, 4 p., https://doi.org/10.3133/fs20213023.

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Year Published: 2021

Assessment of undiscovered gas resources in the Williston Basin Province, 2020

Using a geology-based assessment methodology, the U.S. Geological Survey estimated a mean of 2,438 billion (2.4 trillion) cubic feet of gas resources in the Williston Basin Province, in North Dakota, Montana, and South Dakota.

Schenk, Christopher J.; Mercier, Tracey J.; Woodall, Cheryl A.; Ellis, Geoffrey S.; Finn, Thomas M.; Le, Phuong A.; Marra, Kristen R.; Leathers-Miller, Heidi M.; Drake, Ronald M.
Schenk, C.J., Mercier, T.J., Woodall, C.A., Ellis, G.S., Finn, T.M., Le, P.A., Marra, K.R., Leathers-Miller, H.M., and Drake, R.M., II, 2021, Assessment of undiscovered gas resources in the Williston Basin Province, 2020: U.S. Geological Survey Fact Sheet 2021–3024, 2 p., https://doi.org/10.3133/fs20213024.

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Year Published: 2021

Assessment of undiscovered oil and gas resources in the Pennsylvanian Tyler Formation of the Williston Basin Province, 2020

Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 161 million barrels of oil and 93 billion cubic feet of gas in the Tyler Formation of the Williston Basin Province, North Dakota.

Schenk, Christopher J.; Mercier, Tracey J.; Woodall, Cheryl A.; Finn, Thomas M.; Le, Phuong A.; Marra, Kristen R.; Ellis, Geoffrey S.; Leathers-Miller, Heidi M.; Drake, Ronald M.
Schenk, C.J., Mercier, T.J., Woodall, C.A., Finn, T.M., Le, P.A., Marra, K.R., Ellis, G.S., Leathers-Miller, H.M., and Drake, R.M., II, 2021, Assessment of undiscovered oil and gas resources in the Pennsylvanian Tyler Formation of the Williston Basin Province, 2020: U.S. Geological Survey Fact Sheet 2020–3067, 2 p., https://doi.org/10.3133/fs20203067

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Year Published: 2021

Single-well production history matching and geostatistical modeling as proxy to multi-well reservoir simulation for evaluating dynamic reservoir properties of coal seams

Reservoir properties of coal seams such as gas and water effective permeabilities and gas content, as well as spatial distributions thereof, affect the success of gas production and CO2-enhanced gas recovery (EGR) with simultaneous CO2 sequestration. These properties change during production and injection operations due to...

Karacan, C. Özgen