Related by context. Frequent words. (Click for all words.) 61 AXYS Design Automation 60 Concho Resources 59 ATLS 59 Occidental Petroleum NYSE OXY 58 Atlas Pipeline Partners 58 Crimson Exploration 57 Atlas Pipeline Holdings 57 NYSE OXY 57 Todco 55 Allis Chalmers Energy 55 BreitBurn Energy Partners 54 NYSE SLB 54 Vanguard Natural Resources 54 Newfield Exploration 54 NYSE NOV 54 ENSCO International 54 Anadarko Petroleum APC 54 Cheniere Energy 54 Cimarex Energy 53 McMoRan Exploration 53 Bronco Drilling 53 ION Geophysical 53 Cheniere Energy Partners LP 53 EXCO Resources 53 PetroFalcon 53 Gran Tierra 53 Universal Compression Holdings 53 Petroleo Brasileiro PBR 53 Atwood Oceanics 53 Vantage Drilling Company 53 LP NYSE ETE 53 Newfield Exploration Company 53 NYSE HES 53 NYSE ESV 52 Atlas Pipeline 52 Exterran Holdings 52 GMX Resources Inc. 52 Energy XXI Bermuda 52 GeoMet 52 NGAS Resources Inc. 52 Overseas Shipholding 52 Sterling Bancshares 52 Brigham Exploration 52 NYSE CNP 52 Americas Petrogas 52 GMX Resources 52 NYSE UPL 52 Transmeridian 52 NYSE RDS.A 52 Magellan Midstream Holdings 52 VAALCO Energy 52 Rand Logistics 51 Contango Oil & 51 Transocean Ltd. RIG 51 LSB Industries 51 Harvest Natural Resources 51 PetroGlobe 51 QRCP 51 NGAS Resources 51 Magnum Hunter Resources 51 Homeland Uranium 51 Atwood Oceanics Inc. 51 Corporation NYSE CHK 51 Exxon Mobil NYSE XOM 51 DCP Midstream Partners 51 GlobalSantaFe Corp. 51 Newpark Resources 51 XTO Energy XTO 51 CGG Veritas 51 Dorchester Minerals 51 Alange Energy 51 Teekay Offshore Partners 51 NYSE HL 51 Frontera Resources 51 Occidental Petroleum Corporation 50 Exco Resources 50 Legacy Reserves 50 Chevron NYSE CVX 50 NYSE SPN 50 Hercules Offshore 50 Golar LNG 50 Isramco 50 NYSE RIG 50 Copano Energy LLC 50 Seahawk Drilling Inc. 50 Royale Energy 50 National Oilwell Varco 50 Energy NYSE DVN 50 QEP Resources 50 Uranerz Energy 50 offshore driller 50 Whiting Petroleum 50 Declares Distribution 50 EOG Resources EOG 50 NYSE NBR 50 Pioneer Natural Resources 50 Baker Hughes BHI 50 Dawson Geophysical 50 Northgate Minerals Corp. 50 Flotek Industries Inc. 50 NYSE EQT