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DeGolyer and MacNaughton is a Dallas, TX-based company in the Energy and Utilities sector.
Apex Oil And Gas Inc is a Houston, TX-based company in the Energy and Utilities sector.
Shell Oil Company is the United States-based wholly owned subsidiary of Royal Dutch Shell, a transnational corporation "oil major" of Anglo-Dutch origins, which is amongst the largest oil companies in the world.
WDC Exploration & Wells is a Montclair, CA-based company in the Energy and Utilities sector.
Providing outsourced contractor solutions to the oil and gas industry in drilling & completion, well control, and reservoir & production.