Related by context. Frequent words. (Click for all words.) 79 BPZ Resources Inc. 73 Harvest Natural Resources 72 VAALCO Energy 71 Crimson Exploration 71 Vantage Drilling Company 71 GeoResources Inc. 71 Particle Drilling Technologies 71 GeoMet Inc. 71 ENSCO International 70 Allis Chalmers Energy 70 Approach Resources 68 NYSE BWP 68 Contango Oil & 68 TransAtlantic Petroleum Ltd. 67 Vanguard Natural Resources 67 GMX Resources 67 NYSE NXY 67 NYSE ESV 67 BPZ Energy 67 NYSE OXY 67 Royale Energy 67 Copano Energy LLC 67 NYSE SLB 67 Brigham Exploration 66 NYSE VQ 66 Parallel Petroleum 66 Energy XXI Bermuda 66 Flotek Industries Inc. 66 Concho Resources 66 NYSE UPL 66 CARBO Ceramics 66 Rosetta Resources 66 BPZ 66 Brigham Exploration Co. 66 ION Geophysical Corporation 66 Avro Energy 66 NYSE SPN 66 GMX Resources Inc. 66 Methanex Corporation 66 Pacific Rubiales Energy 66 ERHC Energy Inc. 65 NYSE NBR 65 Newfield Exploration Company 65 Atwood Oceanics Inc. 65 TETRA Technologies Inc. 65 NYSE WLL 65 ENERGY INC. 65 EXXI 65 Magnum Hunter Resources 65 AVANIR Pharmaceuticals 65 NASDAQ ARIA 65 Topaz Resources 65 Nova Biosource Fuels 65 Cheniere Energy Partners LP 65 Alange Energy 65 LINN Energy 64 Toreador Resources Corporation 64 BreitBurn Energy Partners 64 Gasco Energy 64 Brownstone Ventures Inc. 64 Cimarex Energy 64 McMoRan Exploration Co. 64 BNK Petroleum Inc. 64 NYSE HL 64 Newpark Resources 64 NYSE RRC 64 TGC Industries Inc. 64 Concho Resources Inc. 64 CRZO 64 NYSE RIG 63 Tetra Technologies 63 Silverleaf Resorts Inc. 63 NYSE KGC 63 Brigham Exploration Company 63 McMoRan Exploration 63 GulfMark Offshore Inc. 63 Axxess Pharma Inc. 63 NYSE NOV 63 RANGE RESOURCES CORPORATION 63 NYSE BAS 63 China GengSheng Minerals 63 Legacy Reserves 63 Kayne Anderson Energy 63 Rand Logistics 62 Oilsands Quest Inc. 62 Lexicon Pharmaceuticals Inc. 62 Volta Resources 62 NYSE CLR 62 NYSE RRI 62 Callon Petroleum Company 62 Comstock Resources 62 Teekay LNG Partners 62 Corporation NYSE CHK 62 NGAS Resources 62 PetroFalcon 62 Carrizo Oil & 62 HDY 62 PROS Holdings 62 Ensco International 62 NYSE PXP 62 Abraxas Petroleum Corporation