Related by context. Frequent words. (Click for all words.) 58 Inc. NYSE DYN 57 Ensco International 57 ENSCO International 56 Grey Wolf 56 Cal Dive International 55 Newfield Exploration Company 55 Allis Chalmers Energy 55 Contango Oil & 55 Concho Resources Inc. 55 Vantage Drilling Company 55 NYSE CNP 55 VAALCO Energy 54 Precision Drilling Trust 54 Nabors Industries Ltd. 54 Anadarko Petroleum APC 54 Copano Energy LLC 54 Magnum Hunter Resources 54 Harvest Natural Resources 54 NYSE NOV 54 GMX Resources Inc. 53 Hercules Offshore 53 Declares Distribution 53 Newfield Exploration 53 Crimson Exploration 53 XCO 53 Precision Drilling 52 Cimarex Energy 52 Brigham Exploration 52 Approach Resources 52 NYSE RRC 52 NFX 52 Gasco Energy 52 Rosetta Resources 51 National Oilwell Varco 51 BEXP 51 Tetra Technologies 51 SWSI 51 BBEP 51 Comstock Resources 51 Exco Resources 50 Carrizo Oil & 50 Petrohawk Energy 50 National Oilwell 50 Oceaneering International 50 Toreador Resources Corporation 50 PetroQuest Energy Inc. 50 Nabors Industries 50 Vanguard Natural Resources 50 Hercules Offshore Inc. 50 McMoRan Exploration Co. 50 Bronco Drilling 50 GeoResources Inc. 49 Whiting Petroleum Corporation 49 Patterson UTI Energy 49 Schlumberger NYSE SLB 49 DCP Midstream Partners 49 Whiting Petroleum 49 Callon Petroleum Company 49 Baker Hughes BHI 49 Atwood Oceanics 49 Exterran Holdings Inc. 49 Abraxas Petroleum Corporation 48 DYN 48 FMC Technologies Inc. 48 Trico Marine Services 48 Annaly Capital Management 48 Newfield Exploration Co. 48 Corporation NYSE VLO 48 Schlumberger SLB 48 Parallel Petroleum 48 Quicksilver Resources 48 Helix Energy 48 % SELL OFF 48 XEC 47 NYSE RDC 47 Copano Energy 47 Transocean NYSE RIG 47 WNR 47 Petrohawk Energy Corporation 47 GYMB 47 Encore Acquisition Company 47 KWK 47 Cimarex Energy Co. 47 Atlas Pipeline Partners 47 Ultra Petroleum 47 GMXR 47 Legacy Reserves 47 Enterra Energy 47 Royale Energy 46 NYSE OXY 46 NYSE ARG 46 Gastar Exploration 46 Flotek Industries Inc. 46 NGAS 46 DOWNTREND SPOTTED IN SHARES 46 Denbury Resources Inc. 46 QEP Resources 46 EXCO Resources Inc. 46 unsolicited buyout 46 Dril Quip 46 Diamond Offshore Drilling