TotalEnergies French multinational integrated oil and gas energy company, one of the seven "Supermajor" oil companies, active in ~130 countries

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Talisman Energy Inc. Oil and gas company

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Société Nationale des Hydrocarbures National oil and gas company of Cameroon

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Royal Dutch Shell Global oil and gas corp

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Saudi Aramco Saudi Arabia state oil/gas company; the world's most profitable company

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Santos Australian energy company

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Repsol S.A. Spanish energy company

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RasGas Qatari LNG firm

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PTTEP Thai oil company

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Petrotrin Petroleum Company of Trinidad and Tobago

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Members