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Petroleum systems succeed play basis in Appalachian basin resource estimate

January 1, 2004

The US Geological Survey (USGS) periodically conducts subjective probabilistic assessments of the technically recoverable undiscovered hydrocarbon resources of the US and of the world. In addition, the USGS prepares forecasts of that portion of the technically recoverable resources that may be economic under specified conditions of supply, demand, and price. Depending on priorities, regional hydrocarbon assessments of the US are revised every 5 to 10 years. These assessments of undiscovered hydrocarbons supplement the data on hydrocarbon reserves that are reported annually by the US Department of Energy, Energy Information Administration. In between assessments, USGS assessment geologists conduct research and compile geologic and production data that may be used to improve future assessments. This new information commonly effects changes in the way the USGS defines "plays" or "assessment units" from assessment to assessment. Furthermore, USGS assessment methodology is in a constant state of evolution and changes to some degree from assessment to assessment.

Citation Information

Publication Year 2004
Title Petroleum systems succeed play basis in Appalachian basin resource estimate
Authors R.C. Milici, R. T. Ryder
Publication Type Article
Publication Subtype Journal Article
Series Title Oil & Gas Journal
Series Number
Index ID 70027177
Record Source USGS Publications Warehouse
USGS Organization