Diamondback Closes $26B Endeavor Deal, Forming Last Permian ‘Sandbox’ / Latest / By mark Diamondback Energy’s merger with Endeavor Energy Resources forms a company with pro forma production of 468,000 bbl/d (816,000 boe/d) on total Permian acreage of about 838,000 net acres. Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Related