Shell is a group of energy and petrochemicals companies.
Exxon Mobil Corporation explores and produces crude oil and natural gas.
Clean Harbors is a provider of environmental, energy and industrial services.
Baker Hughes is an international industrial and oil field service company.
Rio Tinto is a global mining and metals company.
Chevron is an integrated energy and technology company.
Oceaneering is a global oilfield provider of engineered services and products primarily to the offshore oil and gas industry, with a focus on deepwater applications.
Total is a multinational integrated oil and gas company.
Cabot Oil & Gas Corporation is an independent North American natural gas producer.
Hess is a global independent energy company primarily engaged in the exploration and production of crude oil and natural gas.
BP (British Petroleum) is an oil and petrochemicals company.
Noble Energy is an independent oil and natural gas exploration and production company.