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Oil Optimization Inc is a Canadian listed international oil and gas company focused on discovering hydrocarbons on its petroleum concession onshore Thailand.
All things to oil people - Oilfield Production Equipment
O'Brien Industrial Holdings is a Saint Louis, MO-based company in the Energy and Utilities sector.
Energen Corporation is a diversified energy company with a growing oil and gas acquisition and development company and a strong and stable natural gas utility.
Northern Oil and Gas, Inc. (NYSE: NOG) is a company with a primary strategy of investing in non-operated minority working and mineral interests in oil & gas properties, with a core area of focus in the premier basins within the United States. Northern is the largest publicly traded non-operated exploration and production company.