1To the extent that lease condensate is measured or estimated it is included in "Natural Gas Liquids"; otherwise, lease condensate is included in "Crude Oil." |
7Unconventionally reservoired deposits (continuous-type accumulations) are geographically extensive subsurface accumulations of crude oil or natural gas that generally lack well-defined hydrocarbon/water contacts. Examples include coalbed methane, "tight gas," and auto-sourced oil- and gas-shale reservoirs. |
2Lands owned or under the jurisdiction of the Federal government, excluding Indian and Native lands even when Federally managed in trust. |
– – = Not applicable. |
3Conventionally reservoired deposits are discrete subsurface accumulations of crude oil or natural gas usually defined, controlled, or limited by hydrocarbon/water contacts. |
Notes: · "Technically recoverable" resources are those that are producible using current technology without reference to the economic viability thereof. · Resource estimates are as of the latest estimates generated by the U.S. Department of the Interior, U.S. Geological Survey (USGS) and the Minerals Management Service (MMS). They were not necessarily generated in the current year. · For purposes of comparison, the Potential Gas Committee, an industry-sponsored group of experts, biennially provides another geologically-based estimate of the Nation's natural gas resources. The latest mean estimate, published in "Potential Supply of Natural Gas in the United States," December 31, 2004, is 1,119 trillion cubic feet. This volume includes undiscovered conventionally reservoired deposits, expected ultimate recovery appreciation, coalbed methane, and tight gas where it is believed to be technically recoverable and marketable at reasonable costs. · A value of zero indicates either that none exists in this area or that no estimate of this resource has been made for this area. · "48 States" is the United States excluding Alaska and Hawaii. |
4Onshore (Federal and State) plus State offshore waters (near-shore, shallow-water areas under State jurisdiction). |
Web Page: See http://www.eia.doe.gov/oil_gas/petroleum/info_glance/petroleum.html for related information. |
5Federal offshore jurisdictions (Outer Continental Shelf and deeper water areas seaward of State offshore). |
Source: Energy Information Administration, U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves 2005 Annual Report (December 2006), Table G1, which in turn is based on the latest resource estimates generated by the U.S. Department of the Interior, U.S. Geological Survey and the Minerals Management Service. |
6Proved reserves (see Table 4.2) are not included in these estimates. Ultimate recovery appreciation (reserve growth) is the volume by which the estimate of total recovery from a known crude oil or natural gas reservoir or aggregation of such reservoirs is expected to increase during the time between discovery and permanent abandonment. The estimates of ultimate recovery appreciation for onshore and State offshore lands were imputed by assuming that the total estimates reported by the U.S. Geological Survey could be apportioned according to the ratio of 1996 production from onshore Federal lands to total U.S. production. |
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