The Permian Basin in West Texas and south-eastern New Mexico has been producing oil for almost 100 years through conventional vertical drilling. Since 2009, a few unconventional, horizontal plays have emerged. The Wolfcamp Shale, along with the Bone Spring and Spraberry, drive production growth in the Permian. With consistently decreasing well costs, a stack of producing benches, high productivity, and a significant leading edge in supply chain, the Permian Wolfcamp remains the most resilient unconventional play in the Lower 48 after the 2020 oil price crash. Activity in the Midland and Delaware Wolfcamp has been led by Pioneer and EOG. The Permian Wolfcamp is also a key asset for majors like ExxonMobil and Chevron.