As of December 31, 2006, proved reserves in the Gulf of Mexico Outer Continental Shelf (OCS) are estimated to be 20.30 billion barrels of oil and 183.7 trillion cubic feet of gas from 1,229 proved fields. Proved reserves are the total of the cumulative production plus remaining proved reserves. This number includes 34 proved fields that were added during 2006. It also includes the 273 proved fields that have produced and expired. It does not include the 59 unproved active fields. Estimates are derived for individual reservoirs from geologic mapping and reserve evaluation. Cumulative production from the proved fields accounts for 15.08 billion barrels of oil and 166.8 trillion cubic feet of gas. Remaining proved reserves are estimated to be 5.22 billion barrels of oil and 16.9 trillion cubic feet of gas. These reserves are recoverable from 956 proved active fields.
Source: Minerals Management Service - Gulf of Mexico OCS Region