Shale oil will change global supply, Opec admits

Oil cartel Opec acknowledged the growing importance of unconventional ‘shale’ oil reserves for the first time on Thursday – as it cut its oil demand forecasts on fears over eurozone growth. In its annual world oil outlook report, Opec – whose 12 members include Saudi Arabia, Iran, Iraq and Venezu…

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Shale oil will change global supply, Opec admits