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McKittrick Oil Field
The McKittrick Oil Field is a large oil and gas field in western Kern County, California. The town of McKittrick overlies the northeastern portion of the oil field. Recognized as an oil field in the 19th century, but known by Native Americans for thousands of years due to its tar seeps, the field is ranked 19th in California by total ultimate oil recovery, and has had a cumulative production of over of oil. The principal operators of the field as of 2008 were Chevron Corp. and Aera Energy LLC, but many independent oil exploration and production companies were also active on the field. The California Department of Oil, Gas and Geothermal Resources (DOGGR) estimates approximately 20 million recoverable barrels of oil remain in the ground.〔(California Department of Conservation, Oil and Gas Statistics, Annual Report, December 31, 2006 ), p. 67〕
==Setting==
The oil field is in the McKittrick Valley and the adjacent foothills of the Temblor Range at the western edge of the San Joaquin Valley. California State Route 33 and 58 intersect at the town of McKittrick, and both routes cross over portions of the field. The climate is hot and arid to semi-arid, with an average annual rainfall of , and summertime highs commonly exceeding . Some subfreezing temperatures occur in the winter, with the mean freeze-free period being from 250 to 275 days. Drainage is to the northeast, away from the Temblors towards the Central Valley, and streams are dry for most of the year. The predominant vegetation is the vicinity of the field is low scrub, in particular the saltbush ''Atriplex lentiformis''.〔(McKittrick Tar Pits from Kern Inventory of Natural Areas )〕 Elevations on the field range from approximately .
Many other productive oil fields are nearby. Adjacent to the north is the enormous, and densely developed Cymric Oil Field, and beyond that the South Belridge Oil Field; to the east is the Elk Hills Oil Field, famous in the Teapot Dome Scandal of the Warren G. Harding administration; adjacent to the southwest is the Belgian Anticline Oil Field, along Route 58; and to the southeast is the huge Midway-Sunset Oil Field, the third largest oil field in the United States.
The total productive area of the field is . The field is about long on the southeast to northwest axis, and about across.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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