Client Experience

During its 53-year history, Groppe, Long & Littell has worked with an impressive roster of petroleum, chemical, financial, pipeline and utility companies, and governments including:

Oil & Gas Production
  • AFREN Resources USA, Inc.
  • Agip Petroleum
  • Alberta Energy Company
  • Alta Resources
  • Amerada Hess Corporation
  • Anadarko Minerals, Inc.
  • Anderson Oil & Gas
  • Anschutz Corporation
  • Apache Corporation
  • Antelope Energy Company, LLC
  • Artex Oil Company
  • Bettis Brothers, LP
  • Burleson Petroleum
  • Tom Brown, Inc.
  • Cabot Oil & Gas
  • Canadian Hunter Exploration
  • Chesapeake Energy Corporation
  • CMS Oil & Gas Company
  • Conwest Exploration
  • Coleman Oil & Gas, Inc.
  • Continental Resources, Inc.
  • CrownQuest Operating
  • Devon Energy, Inc.
  • Dutcher & Company
  • EnCana Corporation
  • Energy Corporation of America
  • Energy Development Corp.
  • Fasken Oil and Ranch Ltd.
  • Forest Oil Corporation
  • French Oil Company
  • Greenhill Petroleum
  • Harbert Energy
  • Henry Petroleum
  • Holly Corporation
  • Intrepid Energy, Ltd.
  • Lake Ronel Oil Company
  • Kuwait Energy Services, Ltd.
  • Mack Energy Corporation
  • Marsh Operating Company
  • Mesa Petroleum
  • Momentum Operating Company
  • NCE Resources Group
  • Murphy Oil Corporation
  • Ocean Energy, Inc.
  • Pacific Enterprises Oil & Gas
  • Pan Canadian Petroleum
  • Pengrowth Management Limited
  • Plains Exploration & Production Company
  • Pogo Producing
  • Quintana Petroleum
  • Santa Fe Minerals
  • Seagull Energy
  • Smith Management
  • Summit Petroleum
  • Terrace Petroleum Corporation
  • Texas Crude Exploration
  • Triton Energy Corporation
  • Transworld Oil
  • UMC Petroleum
  • Union Texas Petroleum
  • Wagner & Brown
  • Walter Oil & Gas Corporation
  • Wapiti Energy, LLC
  • Whiting Petroleum
  • Wilbanks Reserves Corporation
  • Clayton Williams Energy, Inc.
  • XPLOR Energy Corporation
Integrated
  • American Petrofina
  • Amoco Corporation
  • Chevron
  • Pennzoil Company
  • Shell Oil Company
  • Sun Company
  • Unocal
Oilfield Services
  • Arethusa Off-Shore
  • Brown & Root
  • Galveston-Houston Co.
  • Grey Wolf, Inc.
  • Global Santa Fe
  • Hercules Offshore, Inc.
  • McDermott International
  • National-Oilwell-Varco, Inc.
  • ProPetro Services
  • R & B Falcon
  • Seahawk Drilling
  • TODCO
  • Transocean
  • Weatherford International Inc.
Chemical
  • Air Products & Chemical
  • ARCO Chemicals
  • BASF Corporation
  • Borg-Warner Chemicals
  • Cabot Corporation
  • Dart Industries
  • Dow Chemical Company
  • Ethyl Corporation
  • E.I. du Pont de Nemours & Co.
  • Hercules, Inc.
  • Himont Incorporated
  • Koch Chemical International
  • National Helium Corp.
  • Oxirane Corp.
  • Petro-Tex
  • PCS Nitrogen
  • PPG Industries
  • Quantum Chemical
  • Texaco Chemicals
  • Texas Eastman
  • Union Carbide Corp.
  • Westlake Group
Pipelines & Utilities
  • American Oil & Gas
  • Calpine Natural Gas Company
  • Centerpoint Energy
  • Cheniere Energy, Inc.
  • Dominion Resources
  • ENRON Corp.
  • Florida Gas Transmission
  • Florida Power & Light
  • Houston Lighting & Power
  • Houston Natural Gas
  • Kaneb Services, Inc.
  • MAPCO, Inc.
  • PacifiCorp Power Marketing
  • Panhandle Eastern
  • PSE, Inc. (Now Destec)
  • Reliant Energy
  • TECO Energy
  • Transco Energy
  • Valero
  • West Texas Gas
Other Companies
  • Continental Airlines
  • General Mills
  • Gerald D. Hines Interests
  • JB Coal to Methane Ventures, LLC
  • Petrochemical Energy Group
  • Reliance Industries Limited
  • Sea-3, Inc.
  • Tenaska Marketing Ventures
  • United Energy Trading, LLC
  • US Foodservice, Inc.
Financial
  • Amiral Gestion
  • Armstrong Equity Partners, LP
  • Avenir Capital Corporation
  • Belridge Energy Advisors
  • BP Capital L.P.
  • Canaccord Capital Corporation
  • Chen Capital Management
  • Deans Knight Capital Management, Ltd.
  • Dresdner RCM Global Investors, LLC
  • Equinox Partners, LP
  • Fidelity Investments
  • First City National Bank
  • Fitzgerald Capital
  • General Electric Credit
  • GE Energy Financial Services
  • Guardian Capital
  • Kistler Investment Co.
  • Scott Lamacraft
  • MCorp
  • John D. & Catherine T. MacArthur Foundation
  • Middlefield Capital Corporation
  • The Mitchell Group
  • Odyssey Partners
  • The Old Mountain Company, Inc.
  • Passport Capital
  • Pate Capital Partners LP
  • Prudential Insurance Co.
  • Rauscher-Pierce Securities
  • RepublicBank
  • Sandefer Capital
  • Socratic Fund
  • Steinberg Asset Management, LLC
  • Texas Commerce Bank
  • Texas Petroleum Investment Corporation
  • David W. Tice & Associates
  • E.W. Warburg, Pincus & Co.
  • Wedge Group
  • Willingham Asset Management
Governments
  • Mexico
  • Venezuela
  • Korea
  • Finland
  • Province of Quebec
  • Alberta Department of Energy