Assumptions to the Annual Energy Outlook 2003

Table 51.    Natural Gas Technically Recoverable Resources
                    (Trillion cubic feet)

Natural Gas  Resource Category

 

As of January 1, 2002

Nonassociated Gas

 

Undiscovered

269.49

    Onshore

114.86

    Offshore

154.63

         Deep (>200  meters W.D.)

107.38

         Shallow (0-200  meters W.D)

47.25

Inferred Reserves    

221.79

    Onshore    

180.33

       Offshore

41.46

            Deep (>200 meters W.D.)

 4.65

            Shallow (0-200  (meters W.D.)

36.82

Unconventional Gas Recovery    

445.08

  • Tight Gas    

    • 317.95

  • Shale    

    • 52.45

  • Coalbed

    • 74.68

    Associated-Dissolved Gas

    137.22

    Total Lower 48 Unproved

    1073.58

        Alaska

    31.86

    Total U.S. Unproved

    1105.43

        Proved Reserves

    183.46

    Total Natural Gas

    1288.89

    WD = Water Depth
    Note:  Resources in areas where drilling is officially prohibited are not included in this table.  Also, the Associated-Dissolved Gas and the Alaska values are not explicitly utilized in the OGSM, but are included here to complete the table.  The Alaska value does not include stranded Arctic gas.  Resource values in the table vary from comparable values in the AEO2002 Assumptions Document natural gas resource table because of: (1) an accounting for net reserve additions and production in 2001 and 2002 and (2) the inclusion of resources for the subsalt areas of the Federal OCS Offshore.
    Source:  Onshore, State Offshore, and Alaska - U.S. Geological Survey (USGS) with adjustments to Unconventional Gas Recovery resources by Advanced Resources, International, Federal (Outer Continental Shelf) Offshore - Minerals Management Service (MMS) with subsalt resources from the National Petroleum Council; Proved Reserves - EIA, Office of Oil and Gas.  Table values reflect removal of intervening reserve additions between the dates of the USGS (1/1/94) and MMS (1/1/99) estimates and January 1, 2002.