Homer Oil Field, Claiborne Parish, Louisiana

Abstract The Homer field, discovered in 1919, has produced more than 56,000,000 barrels of oil to date, and it is estimated that the ultimate production will total 64,000,000 barrels. Expressed in terms of acre yield, the production to date has been 24,600 barrels per acre, and the ultimate production is estimated at 28,000 barrels per acre. The Homer dome has a diameter of about 9 miles and a structural relief of 1,100 feet. The producing area comprises 2,300 acres at the apex of the dome. The dome is traversed by an east-west trending fault of the normal type, with the downthrow toward the south. The maximum throw of more than 500 feet coincides with the highest part of the dome. The angle of the fault plane ranges from 400 to 500. The oil is obtained from two sands in the Gulf series of the Cretaceous. The Nacatoch sand is productive throughout the field at depths ranging from 675 to 1,150 feet below sea-level. The Oakes sand produces oil on the south side and salt water on the north side of the major fault. The depth of the oil-producing sand ranges from 1,750 to 1,850 feet below sea-level. This erratic distribution of the oil in the Oakes sand is ascribed to upward migration along the fault plane, whereby the oil, which under normal conditions would have been trapped in the Oakes sand on the north side of the fault, migrated upward into the Nacatoch sand on either side of the fault. The Trinity group of the Comanche series has not been tested in this area but is believed to contain promising oil- and gas-producing horizons.