Oklahoma - based Catoosa Test Facility recently drilled an extended test well to a depth 7,449 feet using advanced drilling technologies not yet available on the open market . About Catoosa Test Facility: In June last year , the privately owned research facility added a third drilling rig to its testing facility , which recently underwent a $ 2.5 million expansion .
Oklahoma - based Catoosa Test Facility recently drilled an extended test well to a depth 7,449 feet using advanced drilling technologies not yet available on the open market . In June last year , the privately owned research facility added a third drilling rig to its testing facility , which recently underwent a $ 2.5 million expansion .