Publications
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Improved USGS methodology for assessing continuous petroleum resources using analogs
The currently used U.S. Geological Survey methodology for assessing continuous (unconventional) petroleum resources of the United States was developed in the 1990s. This methodology poorly incorporates uncertainty about the estimated ultimate recoveries (EURs). This is especially problematic for hypothetical assessment units where this may be the largest source of uncertainty that needs to be refl
Authors
Ronald R. Charpentier, Troy Cook
Assessment of Undiscovered Oil and Gas Resources of the Red Sea Basin Province
The U.S. Geological Survey estimated mean volumes of 5 billion barrels of undiscovered technically recoverable oil and 112 trillion cubic feet of recoverable gas in the Red Sea Basin Province using a geology-based assessment methodology.
Authors
Improved USGS methodology for assessing continuous petroleum resources
This report presents an improved methodology for estimating volumes of continuous (unconventional) oil and gas resources within the United States and around the world. The methodology is based on previously developed U.S. Geological Survey methodologies that rely on well-scale production data. Improvements were made primarily to how the uncertainty about estimated ultimate recoveries is incorporat
Authors
Ronald R. Charpentier, Troy A. Cook
The principal rare earth elements deposits of the United States: A summary of domestic deposits and a global perspective
The rare earth elements (REE) are fifteen elements with atomic numbers 57 through 71, from lanthanum to lutetium ('lanthanides'), plus yttrium (39), which is chemically similar to the lanthanide elements and thus typically included with the rare earth elements. Although industrial demand for these elements is relatively small in tonnage terms, they are essential for a diverse and expanding array o
Authors
Keith R. Long, Bradley S. Van Gosen, Nora K. Foley, Daniel Cordier
Assessment of undiscovered oil and gas resources of the North Caspian Basin, Middle Caspian Basin, North Ustyurt Basin, and South Caspian Basin Provinces, Caspian Sea Area, 2010
The U.S. Geological Survey estimated mean volumes of technically recoverable, conventional, undiscovered petroleum resources at 19.6 billion barrels of crude oil, 243 trillion cubic feet of natural gas, and 9.3 billion barrels of natural gas liquids for the Caspian Sea area, using a geology-based assessment methodology.
Authors
T. R. Klett, Christopher J. Schenk, Ronald R. Charpentier, Donald L. Gautier, Michael E. Brownfield, Janet K. Pitman, Troy A. Cook, Marilyn E. Tennyson
Assessment of undiscovered oil and gas resources of the Volga-Ural Region Province, Russia and Kazakhstan, 2010
The U.S. Geological Survey estimated mean volumes of technically recoverable, conventional, undiscovered petroleum resources at 1.4 billion barrels of crude oil, 2.4 trillion cubic feet of natural gas, and 85 million barrels of natural gas liquids for the Volga-Ural Region Province, using a geology-based assessment methodology.
Authors
T. R. Klett, Christopher J. Schenk, Ronald R. Charpentier, Michael E. Brownfield, Janet K. Pitman, Troy A. Cook, Marilyn E. Tennyson
The U.S.Geological Survey Energy Resources Program
Energy resources are an essential component of modern society. Adequate, reliable, and affordable energy supplies obtained using environmentally sustainable practices underpin economic prosperity, environmental quality and human health, and political stability. National and global demands for all forms of energy are forecast to increase significantly over the next several decades. Throughout its h
Authors
2010 updated assessment of undiscovered oil and gas resources of the National Petroleum Reserve in Alaska (NPRA)
Using a geology-based assessment methodology, the U.S. Geological Survey estimated mean volumes of 896 million barrels of oil (MMBO) and about 53 trillion cubic feet (TCFG) of nonassociated natural gas in conventional, undiscovered accumulations within the National Petroleum Reserve in Alaska and adjacent State waters. The estimated volume of undiscovered oil is significantly lower than estimates
Authors
D.W. Houseknecht, K. J. Bird, J. H. Schuenemeyer, E.D. Attanasi, C.P. Garrity, Christopher J. Schenk, Ronald R. Charpentier, R. M. Pollastro, T. A. Cook, T.R. and Klett
Differentiating recalcitrant carbon residues in spent oil shale and source rocks
No abstract available.
Authors
Justin E. Birdwell, Tim E. Ruble, Christopher Laughrey, David Roper, Greg Walker
Assessment of undiscovered oil and gas resources of the Chad Basin Province, North-Central Africa
The Chad Basin Province located in north-central Africa recently was assessed for undiscovered, technically recoverable oil, natural gas, and natural gas liquids resources as part of the U.S. Geological Survey's (USGS) World Oil and Gas Assessment. Using a geology-based assessment methodology, the USGS estimated mean volumes of 2.32 billion barrels of oil, 14.65 trillion cubic feet of natural gas,
Authors
Michael E. Brownfield, Christopher J. Schenk, Ronald R. Charpentier, Timothy R. Klett, Troy A. Cook, Richard M. Pollastro, Marilyn E. Tennyson
Natural bitumen and extra-heavy oil
Natural bitumen and extra-heavy oil are characterised by high viscosity, high density (low API gravity), and high concentrations of nitrogen, oxygen, sulphur, and heavy metals. These characteristics result in higher costs for extraction, transportation, and refining than are incurred with conventional oil. Despite their cost and technical challenges, major international oil companies have found it
Authors
Emil D. Attanasi, Richard F. Meyer
Geochemistry of Eagle Ford group source rocks and oils from the first shot field area, Texas
Total organic carbon, Rock-Eval pyrolysis, and vitrinite reflectance analyses performed on Eagle Ford Group core and cuttings samples from the First Shot field area, Texas demonstrate these samples have sufficient quantity, quality, and maturity of organic matter to have generated oil. Furthermore, gas chromatography and biomarker analyses performed on Eagle Ford Group oils and source rock extract
Authors
Janell D. Edman, Janet K. Pitman