The United States provided 60 percent of Oxy's total production in 2008. In addition, Oxy has a greater percentage of its proved reserves in North America – 70 percent – than any of its largest competitors.
Oxy is the No. 1 oil producer in the Permian Basin of southwest Texas and southeast New Mexico, with a production rate of approximately 198,000 barrels of oil equivalent (BOE) per day in 2008. Oxy is the No. 1 natural gas producer and third-largest oil producer in California, where net daily production averaged 128,000 BOE in 2008. In the Piceance Basin in northwest Colorado, one of the country’s larger natural gas reservoirs, Oxy has increased its holdings to approximately 125,000 net acres.
Oxy continually strives to strengthen its North America position by increasing production through strategic acquisitions and additional development in each of the company's key U.S. business areas: the Permian Basin, California and the Piceance Basin.