Related by context. Frequent words. (Click for all words.) 63 Patterson UTI 63 Allis Chalmers Energy 62 Diamond Offshore Drilling 62 Ensco International 59 Rosetta Resources 58 Oceaneering International 58 National Oilwell Varco 56 Hercules Offshore 56 Hercules Offshore Inc. 56 Trico Marine Services 55 Carrizo Oil & 55 Cal Dive International 54 Nabors Industries 54 NYSE HAL 53 Benchmark Electronics 53 Grant Prideco 53 Comstock Resources 53 Nabors Industries Ltd. 53 WESCO International 52 Willbros Group 51 GMXR 51 Lufkin Industries 51 Diamond Offshore 51 Transocean RIG 50 CTSH 50 Harvest Natural Resources 50 Cabot Oil 49 Quanta Services 49 EOG Resources 49 Crosstex Energy 49 Halliburton HAL 49 Schlumberger Limited 49 NYSE APC 49 Ultra Petroleum 48 oilfield 48 Schlumberger Ltd 48 National Oilwell 48 Helix Energy 48 Whiting Petroleum Corporation 48 Helmerich & 48 Overseas Shipholding Group 47 FMC Technologies 47 Schlumberger Ltd. 47 McMoRan Exploration Co. 47 Vanguard Natural Resources 47 Hornbeck Offshore Services 47 BBBY 47 FMC Technologies Inc. 47 Precision Drilling Trust 46 DryShips 46 JB Hunt Transport 46 Sempra Energy NYSE SRE 46 Occidental Petroleum Corporation 46 Core Laboratories 46 Pioneer Drilling 46 Petroleo Brasileiro 46 Weingarten Realty Investors 46 Anadarko Petroleum 45 ESRX 45 CMCSA 45 PCLN 45 BPZ 45 SPLS 45 NYSE CNX 45 Geokinetics 45 Layne Christensen 45 AK Steel Holding 45 NYSE CHK 45 OGE Energy 45 Schlumberger 45 Gentiva Health 45 Magnum Hunter 44 Chesapeake Energy 44 Precision Drilling 44 NYSE MRO 44 NVLS 44 NYSE ACI 44 XTO Energy Inc. 44 Pepco Holdings 44 Celadon Group 44 MDU Resources Group 44 Quicksilver Resources 44 EXCO Resources Inc. 44 & Coots 44 BJS 44 Range Resources 43 CTXS 43 Halliburton Co. 43 Willbros 43 RehabCare Group 43 GlobalSantaFe 43 offshore drilling contractor 43 United Technologies UTX 43 Psychiatric Solutions 43 Petrohawk 43 INTU 43 YHOO 43 Exxon Mobil NYSE XOM 42 Mariner Energy 42 dayrates 42 Oilfield Services