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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.
Go Wireline is a premier wireline and pressure pumping provider in the oil and gas industry, with locations in Williston, ND, Dickinson, ND, and Greeley, CO.
Japan Canada Oil Sands Ltd. is a Calgary, AB-based company in the Energy & Utilities sector.
Harper Oil Co. is a Springfield, IL-based company in the Energy & Utilities sector.
Ryno Energy Partners is headquartered in Tyler, TX and with offices in Canonsburg, PA; Denver, CO; Houston, TX; and Tulsa, OK seeks to develop, acquire, and operate natural gas, natural gas liquids, and crude midstream assets in the oil and gas basins throughout the U.S., leveraging its extensive history of successful project development from conventional midstream applications to more complex, large scale chemical, refining and storage solutions.