Related by context. Frequent words. (Click for all words.) 60 Valero Energy 53 Tesoro 52 Chevron 50 ChevronTexaco 50 Sunoco 49 refinery 49 Conoco 48 Pemex 47 Exxon 47 Exxon Mobil 46 Shell 45 Lyondell 45 PDVSA 45 ConocoPhillips 45 Ecopetrol 45 refineries 45 Citgo 44 Refinery 44 Repsol 44 ExxonMobil 42 Texaco 41 refining 41 Chavez 41 Occidental 41 Celanese 40 Venezuelan 40 Gas Natural 40 refiner 39 Refineries 39 Kerr McGee 39 Cemex 39 Lukoil 39 Suncor 39 refiners 39 Petrobras 39 Corpus Christi 39 Irving 39 Anadarko 38 Venezuela 38 Port Arthur 38 Marathon Oil 38 Dynegy 38 Exxon Mobil Corp. 38 LyondellBasell 38 Royal Dutch Shell 38 Petron 37 VeraSun 37 Statoil 37 Esso 37 El Paso 37 Santander 37 Entergy 36 Juarez 36 refining margins 36 Couche Tard 36 BP 36 Rafael Ramirez 35 Eni 35 Chevron Corp. 35 Sempra Energy 35 Hess 35 Beaumont 35 Zavala 35 Circle K 35 Petro Canada 35 Sempra 35 StatoilHydro 35 Refining 35 Fluor 35 Chávez 35 Baytown 35 Shell Oil 35 Monterrey 35 Corona 35 NRG Energy 34 CF Industries 34 HEB 34 Texas 34 Telmex 34 XTO 34 Dollar Tree 34 Refiners 34 petrochemical 34 San Antonio 34 EnCana 34 Caltex 34 ethanol 33 Kinder Morgan 33 El Universal 33 Mexican 33 Oxnard 33 Mexico 33 Deepwater 33 refining capacity 33 XOM 33 Calpine 33 crude 33 Harlingen 32 Ramírez 32 Arco 32 Valdez