The world needs more investment in oil and gas as they will continue to account for a large part of the global energy mix in 2050, OPEC Secretary General Haitham Al Ghais said on Wednesday, reiterating the cartel’s view that investment in new supply will be needed in the foreseeable future.  Primary energy demand will jump by 23% by 2050, Al Ghais said in remarks to the Russian Energy Week conference in Moscow, as carried by Reuters. And oil will still represent 30% of total global energy consumption in 2050, OPEC’s Secretary General…

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