Related by context. Frequent words. (Click for all words.) 60 Comstock Resources 59 Royale Energy 58 Approach Resources 58 Harvest Natural Resources 58 BPZ Energy 57 Quicksilver Resources 57 EXCO Resources Inc. 56 Legacy Reserves 56 Rosetta Resources 55 Petrohawk 55 Vanguard Natural Resources 54 Gran Tierra 53 Magnum Hunter 53 Allis Chalmers Energy 52 Gran Tierra Energy 52 Grant Prideco 52 Ivanhoe Energy 51 Crosstex Energy 51 Ultra Petroleum 51 BPZ 51 Gasco Energy 51 Hercules Offshore 51 Petrohawk Energy Corporation 50 GMXR 50 Cimarex Energy Co. 50 PetroQuest 50 Magellan Midstream Partners LP 50 Atlas Pipeline 50 Pioneer Drilling 49 GreenHunter Energy 49 Newfield Exploration 49 Petro Vista 49 Petro Andina 49 TransMontaigne 49 Enogex 49 NYSE RRC 49 TEPPCO Partners LP 49 TXCO 49 Canacol 49 Energy XXI 49 Pioneer Natural Resources 49 Bronco Drilling 49 TexCom 49 Brigham Exploration Company 48 Hiland Partners LP 48 EVEP 48 DCP Midstream Partners LP 48 Enterra Energy 48 Brigham Exploration 48 Oneok 48 RigNet 48 Divestco 48 Quicksilver Gas Services 48 Petrominerales 48 Petroflow 48 Petrolifera 48 Arkoma Basin 47 Cimarex 47 Products Partners LP 47 Crosstex Energy LP 47 Denbury Resources Inc. 47 Gastar Exploration Ltd. 47 McMoRan Exploration Co. 47 Carrizo Oil & 47 Geokinetics 47 TAG Oil 47 CVR Energy 47 ENSCO International 47 Sterling Bancshares 47 Quest Resource 47 PetroSun 47 ProspEx 47 Ensco International 47 Venoco 46 Martin Midstream Partners 46 ONEOK 46 Nexen 46 Denbury 46 Whiting Petroleum Corporation 46 Pacific Rubiales 46 Boardwalk Pipeline Partners LP 46 AmREIT 46 Transfer Partners LP 46 OGE Energy Corp. 46 Magellan Petroleum 46 XTO Energy Inc. 46 FCStone Group 46 SandRidge Energy Inc. 46 Bois d' Arc 45 Oilsands Quest 45 SolArc 45 Valero LP 45 Copano 45 Hercules Offshore Inc. 45 EarthFirst 45 NGAS 45 Crosstex 45 natural gas 45 Piceance 45 Questar Corp. 45 Toreador