Parsley in flaring pledge

A horizontal drilling rig on a lease owned by Parsley Energy operates in the Permian basin near Midland, Texas US
A horizontal drilling rig on a lease owned by Parsley Energy operates in the Permian basin near Midland, Texas USPhoto: REUTERS/SCANPIX
Published 27 February 2020, 10:30Updated 27 February 2020, 10:30