Comments on: Proppant intensity may increase by 35% in Permian Basin before reaching optimal economics /proppant-intensity-may-increase-by-35-in-permian-basin-before-reaching-optimal-economics-45400 Get the latest oil drilling news with Èý•NÌåÓý Mon, 05 Feb 2018 18:35:06 +0000 hourly 1 https://wordpress.org/?v=6.1.1