So that caused us to make that shift," Pigott said. By mid-2018, Chesapeake was decoupling its frack services and lining up partners for logistics and sand. The company started its direct-sourcing transition in fourth-quarter 2018, pumping regional sand and managing final mile transport, he said. The change has resulted in 50% cost savings vs. traditional northern white sand and a 92% drop in sand-related NPT, according to Pigott, who called it a game changer for the company. "As we've gone to this micro supply chain, it's a lot of clarity," Pigott said. There have been times when a vendor would say it was waiting on sand while down fixing pumps, he said, noting you couldn't really tell whether time was needed to fix pumps or for sand to arrive. "Now they are no longer waiting on sand. … We have clarity into what's really going on." It also helps that Chesapeake acquired the Burleson Sand Mine as part of its purchase of WildHorse Resource Development Corp. that closed in February.