As with all estimates of oil reserves, and especially with those as tricky as oil shale, not everyone agrees. Some more recent estimates suggest that the amount of recoverable oil is upwards of 1.5 ...

Petronas CEO Tan Sri Dato' Shamsul Azhar Abbas and YPF counterpart Miguel Galuccio (L) signed the accord in Kuala Lumpur (Photo file) Argentine government controlled energy company YPF said on ...