Kern River Oil Field
The Kern River Oil Field is a large oil field in Kern County in the San Joaquin Valley of California, north-northeast of Bakersfield in the lower Sierra foothills. Yielding a cumulative production of close to 2 billion barrels (320,000,000 m3) of oil by the end of 2006, it is the third largest oil field in California, after the Midway-Sunset Oil Field and the Wilmington Oil Field, and the fifth largest in the United States. Its estimated remaining reserves, as of the end of 2006, were around 476 million barrels (75,700,000 m3), the second largest in the state. It had 9,183 active wells, the second highest in the state. The principal operator on the field is Chevron Corporation
The Kern River Oil Field covers an area of 10,750 acres (43.5 km2) in a rough oval extending over the low hills north-northeast of Bakersfield, hills which are now almost completely barren except for oil rigs, drilling pads and associated equipment. This area is the densest operational oil development in the state of California: Midway-Sunset, which has more wells, is almost three times as large in surface area, for a lower overall density. Elevations on the Kern River Oil Field range from approximately 400 to 1,000 feet (300 m), rising towards the northeast, and the Kern River flows south of the field, from east to west, from the Sierra Nevada into the city of Bakersfield.
The oil field is one of many contiguous oil fields along the eastern edge of the southern San Joaquin Valley, lying between the Kern Front field to the northwest and the Kern Bluff field to the southeast, on the other side of the Kern River. Directly north of the Kern River field is the large Mount Poso Oil Field, entirely in the Sierra foothills, and to the northeast is the Round Mountain Oil Field.
Unlike some of the other Kern County oil fields which contain numerous pools, the Kern River field has one large pool, named for the field itself (the Kern River) and two smaller pools, the Vedder and Jewett, discovered in 1981 and 1985 respectively. The formation containing the Kern River pool is of Pliocene- age, and lies 400 to 1,300 feet (400 m) below ground surface; the Vedder and Jewett are of Oligocene and Miocene ages, respectively, with depths of 4,700 and 4,220 feet (1,290 m).
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