US oil drillers add four rigs

Weekly tally shows gains in Marcellus despite overall loss in gas-directed rigs

Rigs added: oil drillers gain units — Rigs added: oil drillers gain unitsFoto: NICK OXFORD

Caroline Evans

USA Pennsylvania West Virginia Utica Permian

Published 13 December 2019, 18:35Updated 13 December 2019, 18:35