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Berry Petroleum Company, LLC is an independent privately-held energy Company engaged in the acquisition, exploration, development and production of domestic oil and natural gas reserves primarily located in the San Joaquin Basin in California, the Uinta Basin in Utah, the Piceance Basin in Colorado, and the East Texas Basin in Texas.
Complete Production Services is a Houston, TX-based company in the Energy and Utilities sector.
Optimum Energy Products Ltd. is a Calgary, AB-based company in the Energy and Utilities sector.
Polaris Engineering and Polaris Construction is a Lake Charles, LA-based company in the Energy and Utilities sector.
Marathon Oil Corporation (NYSE: MRO) is an independent international exploration and production company. Based in Houston, Texas, Marathon Oil had net proved reserves at the end of 2011 of 1.8 billion barrels of oil equivalent in North America, Europe and Africa.