OPINION: Massive gains in US production should have already erased any doubts about the prevalence of shale in the global energy mix.
But the latest public statements by two US supermajors show just how central unconventionals have become to their business.
While innovation from independents helped bring the sector to global prominence, it is now oil and gas giants that are pushing the gas pedal in the Permian as smaller players are reining in spending amid investor pressure.
