Related by context. Frequent words. (Click for all words.) 61 Crosstex Energy 58 MarkWest Energy Partners 56 Transfer Equity 55 Vanguard Natural Resources 54 MarkWest 54 ONEOK Partners 54 Allis Chalmers Energy 54 EXCO Resources Inc. 54 Comstock Resources 54 Rosetta Resources 53 Ultra Petroleum 53 TEPPCO 53 Magnum Hunter 53 CNX Gas 53 ONEOK 53 El Paso Pipeline 53 Flotek 53 NOVA Chemicals 53 Harvest Natural Resources 53 Transfer Partners LP 52 Crosstex Energy LP 52 Kinder Morgan 52 Enerflex 52 Denbury 52 Atlas Pipeline 52 GMXR 51 SandRidge 51 Buckeye GP 51 Atlas Pipeline Holdings 51 Carrizo Oil & 51 OGE Energy 51 MarkWest Energy Partners LP 51 Sunoco Logistics Partners LP 51 Oneok 51 Western Refining 51 NuStar 51 NuStar Energy LP 51 Quicksilver Resources 51 Dynamex 51 Toromont 50 Petrohawk 50 Kinder Morgan Energy 50 Spectra Energy 50 Grant Prideco 50 XTO 50 Baytex Energy Trust 50 ENGlobal 50 Quanta Services 50 Helix Energy 50 Products Partners LP 50 Venoco 50 FMC Technologies 50 Atlas Pipeline Partners LP 50 SGLP 50 Spectra Energy Corp 49 Crosstex 49 Actuant 49 Cimarex 49 NYSE ARG 49 Hercules Offshore 49 Premcor 49 National Oilwell Varco 49 Denbury Resources Inc. 49 MDU Resources Group 49 GreenHunter Energy 49 Energy Partners LP 49 SandRidge Energy Inc. 49 Teekay Tankers 48 Foster Wheeler 48 Tortoise Energy 48 Valero Energy 48 Commercial Metals 48 CF Industries 48 Ferrellgas 48 Wescorp 48 Buckeye Partners LP 48 Quest Resource 48 Clean Harbors 48 Alon USA 48 Lyondell Chemical 48 Exxon Mobil NYSE XOM 48 Inergy 48 Cabot Oil 48 Pacific Ethanol 48 Marathon Oil 48 SemGroup Energy 48 TC PipeLines LP 47 NYMEX Holdings 47 Celanese 47 SunOpta 47 Puda Coal 47 Plains Renewable Energy 47 Dynegy 47 AltaGas 47 Energen 47 ADA ES 47 SemGroup LP 47 Common Units 47 ShengdaTech 47 Spartech 47 Rentech