Proved reserves are estimated to be 14.93 billion barrels of oil* and 167.3 trillion cubic feet of gas from 1,050 proved fields in the same geographic area. Included in this number are 175 proved expired depleted fields: not included are the 51 unproved active fields. Estimates were derived for individual reservoirs from geologic mapping and reserve evaluation. Cumulative production from the proved fields accounts for 11.93 billion barrels of oil and 142.7 trillion cubic feet of gas.