Delta Petroleum Corporation and its subsidiaries engage in the exploration, acquisition, development, production, and sale of natural gas and crude oil primarily in the Rocky Mountain and onshore Gulf Coast regions. The company owns interests in developed and undeveloped oil and gas properties in federal units offshore California, near Santa Barbara; and developed and undeveloped oil and gas properties in the continental United States. It also engages in contract drilling operations, as well as providing moving services for third party drilling rigs in the Casper, Wyoming area. As of December 31, 2009, the companys proved reserves were comprised of approximately 126.7 billion cubic feet of natural gas, and 4.5 Mmbbls of crude oil. Delta Petroleum Corporation was founded in 1984 and is based in Denver, Colorado.