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Challenges, uncertainties, and issues facing gas production from gas-hydrate deposits Challenges, uncertainties, and issues facing gas production from gas-hydrate deposits

The current paper complements the Moridis et al. (2009) review of the status of the effort toward commercial gas production from hydrates. We aim to describe the concept of the gas-hydrate (GH) petroleum system; to discuss advances, requirements, and suggested practices in GH prospecting and GH deposit characterization; and to review the associated technical, economic, and environmental...
Authors
G. J. Moridis, Timothy S. Collett, M. Pooladi-Darvish, S. Hancock, C. Santamarina, R. Boswel, T. Kneafsey, J. Rutqvist, M. B. Kowalsky, M. T. Reagan, E. D. Sloan, A. K. Sum, C. A. Koh

Geology and petroleum potential of the Lincoln Sea Basin, offshore North Greenland Geology and petroleum potential of the Lincoln Sea Basin, offshore North Greenland

A seismic refraction line crossing the Lincoln Sea was acquired in 2006. It proves the existence of a deep sedimentary basin underlying the Lincoln Sea. This basin appears to be comparable in width and depth to the Sverdrup Basin of the Canadian Arctic Islands. The stratigraphy of the Lincoln Sea Basin is modelled in analogy to the Sverdrup Basin and the Central Spitsbergen Basin, two...
Authors
K. Sorensen, D. Gautier, Janet K. Pitman, H. Ruth Jackson, T. Dahl-Jensen

Comprehensive database of wellbore temperatures and drilling mud weight pressures by depth for Judge Digby field, Louisiana Comprehensive database of wellbore temperatures and drilling mud weight pressures by depth for Judge Digby field, Louisiana

This document serves as the repository for the unprocessed data used in the investigation of temperature and overpressure relations within the deep Tuscaloosa Formation in Judge Digby field. It is a compilation of all the publicly accessible wellbore temperature and pressure data for Judge Digby field, a prolific natural gas field producing from the Upper Cretaceous lower part of the...
Authors
Lauri Burke

Improved USGS methodology for assessing continuous petroleum resources using analogs 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...
Authors
Ronald R. Charpentier, Troy Cook

Assessment of Undiscovered Oil and Gas Resources of the Red Sea Basin Province 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
Water Resources Division U.S. Geological Survey

Improved USGS methodology for assessing continuous petroleum resources 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
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 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...
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 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 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

Assessment of undiscovered oil and gas resources of the Chad Basin Province, North-Central Africa 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...
Authors
Michael E. Brownfield, Christopher J. Schenk, Ronald R. Charpentier, Timothy R. Klett, Troy A. Cook, Richard M. Pollastro, Marilyn E. Tennyson

Geochemistry of Eagle Ford group source rocks and oils from the first shot field area, Texas 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...
Authors
Janell D. Edman, Janet K. Pitman
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