(DRQ), Ensco plc (ESV), Exterran Holdings (EXH), FMC Technologies (Fro, Forum Energy Technologies (FET), Halliburton (HAL), Hornbeck Offshore (HOS), NOW Inc. (DNOW), National Oilwell Varco (NOV), Noble Corp. (NE), Rowan Companies (RDC), Schlumberger (SLB), Superior Energy Services (SPN), Transocean (RIG)