Related by context. Frequent words. (Click for all words.) 73 Whiting Petroleum 70 Newfield Exploration Company 70 GeoResources Inc. 69 Concho Resources Inc. 68 Cimarex Energy Co. 67 Parallel Petroleum 65 Cimarex Energy 64 Approach Resources 64 EXCO Resources Inc. 64 Gasco Energy 64 Crimson Exploration 64 Brigham Exploration 64 QEP Resources 64 Legacy Reserves 63 Brigham Exploration Company 63 NYSE RRC 62 Harvest Natural Resources 62 Comstock Resources 62 Royale Energy 61 Rosetta Resources 61 Vanguard Natural Resources 61 Carrizo Oil & 60 Allis Chalmers Energy 59 Encore Acquisition Company 59 Targa Resources Partners LP 58 Copano Energy LLC 58 Occidental Petroleum Corporation 58 Anworth Mortgage Asset 58 Shenandoah Telecommunications 58 Newfield Exploration 57 NYSE PVA 57 Baytex Energy Trust 57 Copano Energy 57 MarkWest Energy Partners LP 57 Callon Petroleum Company 57 Glacier Bancorp 56 ENSCO International 56 McMoRan Exploration Co. 56 GMXR 56 Enterra Energy 56 Ultra Petroleum 56 Magellan Midstream Partners 56 Gastar Exploration Ltd. 56 PetroQuest 56 Transfer Partners LP 56 Peyto Energy 56 MarkWest Energy Partners 55 Enerplus Resources Fund 55 Transfer Equity 55 Sempra Energy NYSE SRE 55 MGE Energy 55 Pengrowth Energy 55 Ferrellgas Partners LP 55 EnerJex 55 Quicksilver Resources 55 Nabors Industries Ltd. 55 Denbury Resources Inc. 55 CVR Energy 55 Corporation NYSE CHK 54 Magellan Midstream Partners LP 54 Petrohawk Energy Corporation 54 NYSE APC 54 Pioneer Natural Resources 54 Magnum Hunter 54 Hiland Partners LP 54 Exterran Holdings 54 NYSE HES 54 NYSE ECA 54 Boardwalk Pipeline Partners LP 54 Crosstex Energy 54 Trico Marine Services 54 BPZ Energy 54 Schlumberger Limited 54 Atlas Pipeline Partners 54 MDU Resources Group 53 Associated Banc Corp 53 GreenHunter Energy 53 Bronco Drilling 53 Energy XXI 53 EVEP 53 Dril Quip 53 Quest Resource 53 EnerCom Inc. 53 Questerre 53 OGE Energy 53 FelCor Lodging Trust 53 UGI Corporation 53 Martin Midstream Partners 53 Provides Operational Update 53 Sunoco Logistics 53 Connacher Oil 53 ProspEx 52 TXCO 52 NYSE DPL 52 Newfield Exploration Co. 52 ONEOK Partners LP 52 Cal Dive International 52 EOG Resources Inc. 52 EQT Corporation 52 Canacol 52 Inergy LP