US drillers add oil rigs for 18th week in row

22 May 2017, Houston — U.S. energy companies added oil rigs for an 18th week in a row, the second-longest such streak on record, as expectations of higher crude prices have motivated drillers to boost monthly shale production to its highest level since mid-2015. Drillers added eight oil rigs in the week to May 19, […] More »