USGS: Science Topics: petroleum

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Petroleum

Naturally occurring hydrocarbons, typically fluid or gas, often of economic use. Includes oil, natural gas, and asphaltic compounds found in tar sands and oil shales.

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Oil spills (11 items)

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Assessment of Undiscovered Oil and Gas Resources of the East Greenland Rift Basins Province [More info]: Using a geology-based assessment methodology, we estimated the mean undiscovered conventional petroleum resources to be 31,400 million barrels of oil equivalent, present in oil, gas, and natural gas liquids.
Assessment of undiscovered oil and gas resources of the Illinois Basin, 2007 [More info]: We estimated a mean of 214 million barrels of oil, 4.65 trillion cubic feet of natural gas, and 24 million barrels of natural gas liquids in this area using a geology-based assessment methodology.
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 [More info]: We 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.
Assessment of undiscovered oil and gas resources of the North Sakhalin Basin Province, Russia, 2011 [More info]: We estimated 5.3 billion barrels of crude oil, 43.8 trillion cubic feet of natural gas, and 0.8 billion barrels of natural gas liquids as undiscovered, technically recoverable resources in this area using a geology-based assessment methodology.
Assessment of undiscovered oil and gas resources of the Ordovician Utica Shale of the Appalachian Basin Province, 2012 [More info]: We estimated means of 940 million barrels of oil, 38.2 trillion cubic feet of gas, and 208 million barrels of natural gas liquids in these units using a geology based assessment methodology.
Assessment of Undiscovered Oil and Gas Resources of the Permian Basin Province of West Texas and Southeast New Mexico, 2007 [More info]: We estimated a mean of 41 trillion cubic feet of undiscovered natural gas and a mean of 1.3 billion barrels of undiscovered oil in this area using a geology-based assessment methodology.
Assessment of Undiscovered Oil and Gas Resources of the Red Sea Basin Province [More info]: We estimated mean volumes of 5 billion barrels of undiscovered technically recoverable oil and 112 trillion cubic feet of recoverable gas in this area using a geology-based assessment methodology.
Assessment of undiscovered oil and gas resources of the South Africa Coastal Province, Africa [More info]: We estimated mean volumes of 2.13 billion barrels of oil, 35.96 trillion cubic feet of natural gas, and 1,115 million barrels of natural gas liquids in this area using a geology-based assessment methodology.
Assessment of undiscovered oil and gas resources of the southern Siberian craton (Baykit High, Nepa--Botuoba High, Angara--Lena Terrace, and Cis--Patom Foredeep Provinces), Russia, 2011 [More info]: We estimated t 3.0 billion barrels of crude oil, 63.3 trillion cubic feet of natural gas, and 1.2 billion barrels of natural gas liquids in this area using a geology-based assessment methodology.
Assessment of undiscovered oil and gas resources of the Sud Province, north-central Africa [More info]: We estimated mean volumes of 7.31 billion barrels of oil, 13.42 trillion cubic feet of natural gas, and 353 million barrels of natural gas liquids in this area using a geology-based assessment methodology.

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