Related by context. Frequent words. (Click for all words.) 64 National Oilwell Varco 58 Ensco 55 XTO 55 GlobalSantaFe 54 FMC Technologies 53 Patterson UTI Energy 53 Petrohawk 53 Grey Wolf 52 Flotek 52 Hercules Offshore 52 AZZ 52 Actuant 52 AMETEK 52 Carrizo Oil & 51 Diamond Offshore Drilling 50 Oceaneering 50 Energy XXI 50 oilfield 50 Cimarex 50 Cullen Frost 49 Magnum Hunter 49 Wellstream 49 XTO Energy Inc. 49 LTX Credence 49 Subsea 7 49 Ipsco 49 XTO Energy 49 Premcor 49 Northwest Pipe 49 Kensey Nash 49 Applied Signal Technology 48 SandRidge 48 Geokinetics 48 Dionex 48 Endologix 48 Allis Chalmers 48 Oceaneering International 48 Illinois Tool Works 48 Schlumberger 48 Crosstex 48 Teekay 47 Schlumberger Limited 47 Teleflex 47 Tenneco 47 CNX Gas 47 EOG 47 MasTec 47 Lufkin Industries 47 Kerr McGee 47 EOG Resources 47 Western Refining 47 MarkWest 47 Entegris 47 Pioneer Natural Resources 47 Norbord 47 Terex 47 Denbury 47 Venoco 47 Willbros Group 47 Crosstex Energy 47 Silgan 46 LB Foster 46 Ultra Petroleum 46 IPSCO 46 Overseas Shipholding Group 46 Tyco Electronics Ltd. 46 Pioneer Drilling 46 Helix Energy 46 Schlumberger Ltd. 46 offshore drilling contractor 46 A. Schulman 46 EnCana 46 Orthovita 46 Precision Drilling Trust 46 Enerflex 45 Precision Drilling 45 Norsk Hydro ASA 45 Anadarko Petroleum Corp. 45 Somanetics 45 McMoRan 45 Products Partners LP 45 Graphic Packaging 45 Dresser Rand 45 Spartech 45 OCTG 45 Nanometrics 45 Stifel Financial 45 Oilfield Services 45 Quicksilver Resources 45 MDU Resources Group 45 Technitrol 45 ev3 45 Superior Essex 45 Commercial Metals 45 Harsco 45 Flowserve 45 Chesapeake Energy 45 AmeriCredit 45 HealthTronics 45 Vallourec 45 Aker Solutions