After falling 206 rigs in the first half of the year, the rig count has increased or held steady every week so far this quarter.
The rig count plunged from a high in October 2014 after crude prices collapsed in the biggest price rout in a generation.
Drillers added seven oil rigs in the week to 9 September, bringing the total rig count up to 414, energy services firm Baker Hughes said.
That