Energy

The results of all USGS oil and gas resource assessments by a USGS assessment team are subject to a scientific peer review process prior to publication; however, the volumes determined by the assessment process are not subject to approval by higher-level...
During 2010 and early 2011, the USGS examined the Devonian Marcellus Shale in the Appalachian Basin of the eastern United States using the National Oil and Gas Assessment (NOGA) methodology for continuous resources (see for articles explaining this...
The objective of the 2011 oil and gas resource assessment was to estimate the volume of undiscovered, technically recoverable oil and natural gas resources in the Marcellus shale of the Appalachian basin.  There was no other objective to this study.  The...
The objective of the 2011 oil and gas resource assessment was to estimate the volume of undiscovered, technically recoverable oil and natural gas resources in the Marcellus shale of the Appalachian basin.  There was no other objective to this study.
The USGS did not assess water-borne or atmospheric emissions during its 2011 oil and gas resource assessment of the Marcellus. The West Virginia Department of Environmental Protection Office of Water and Waste Home has information on water quality within...
 Probably not. In 2000, the USGS assessed undiscovered technically recoverable oil and gas in Saudi Arabia at 87 billion barrels (USGS 2000 World Petroleum Assessment ) compared to a mean estimate of undiscovered, technically recoverable oil in the...
Gas hydrates can be studied in the laboratory, where a machine is used to create the proper pressure and temperature conditions for hydrate formation, or it can be studied in situ using seismic data collected aboard ships and geophysical models.Learn...
Coal formed when prehistoric forests and marshes were buried and compressed over hundreds of millions of years. As time went on, moisture was squeezed out due to the heat, and pressure of the rock over it, leading to higher and higher concentrations of...
The USGS shale gas resource assessments place the 2011 three Marcellus assessment units in fourth, twenty-first, and twenty-third place in a field of twenty-six U.S. shale gas assessments units.
Mineable coal is usually found as beds (also called “seams”) in other rock layers, both close to the surface as well as deep underground. Depending on the location, depth and conditions of the coal seam, different techniques are used, including strip...