Addax

Adelaide Energy, Inc.

Antelope Energy Company

Arctic Slope Regional Corporation

Arrow Energy

Aspect Management Corporation

Barrett Resources

BEB Erdgas und Erdöl GmbH

(German affiliate of Esso/Shell)

Black Hills Exploration & Production

Bonanza Creek

Brigantine Energy Inc.

Bristol Bay Native Corporation

British Petroleum (Colombia)

British Petroleum (Kuwait)

British Petroleum (United Kingdom)

British Petroleum (United States)

British Petroleum (Venezuela)

Buena Vista Hills Development Company

Burlington Resources

CS Energy (Australia)

Celcius Energy Company

Cepsa (Spain)

Chamberlain, Hrdlicka, White, Williams

     & Martin

Coastal Oil and Gas

Colorado Interstate Gas

Conoco Phillips

Contact Energy LTD

Cook Inlet Region, Inc.

Cornerstone Energy

Crimson Resource Management

Cross Timbers Oil Company

DJ Resources

Double Eagle

Elk Resources,Inc.

Elk Petroleum

Ellora Energy

Enron Oil and Gas

Enterra Energy Trust

Exoro

ExxonMobil

Evertson Oil Company

Gasco Energy

GeoPetro

Fairfield Management

Falcon Creek Resources

Fellows Energy

Foothills Energy Ventures

Foreland Corporation

Gazprom

GMX

Gemtex

Greenpark

Giant Exploration & Production

Gough, Shanahan, Johnson & Waterman

HS Resources

Hall & Evans

Halliburton

Hathaway, LLC

Heartland Resources

Hite CBM LLC

Howell Petroleum Corporation

Illinois Power

Informa Group

InterEnergy Corporation

Investec Bank

Iofina Natural Gas, Inc.

Impac

KN Energy

KN Production Company

Kennecott Energy Company

Kestrel Energy

Kinder Morgan

Koniag, Inc.

Landmark

Lasmo

Louisiana Land & Exploration

Luca Technologies

Marathon Oil Company

McClure, Trotter & Mentz

Medallion Exploration

Merrion Oil & Cas

Methane Energy Corp.

Middleton, Timmie & Luke

Midwest United Energy LLC

Minnaco Energy Partners LLC

Mobil New E & P Ventures

Modrall, Sperling, Roehl, Harris & Sisk

Montana Power Company

Murphy Oil Canada

NAM

Nations Petroleum

Natural Gas Corporation (New Zealand)

Navajo Nation

Origin Energy Resources (Australia)

Occidental de Hidrocarburos, Inc. (Oxy Maracaibo)

Oilgener (formerly Cordex Petroleum)

Patton Boggs

PetroCanada

PetroSkills (OGCI)

Petron Resources

Platte-Sparks

PRE Resources

Presco, Inc.

Prima

Prospect Street Investment

Pyr Energy

Quantum Energy Partners

Questar Exploration

RAG

RWE Dea AG

Reading & Bates Development Company

Resource Strategies

Sandefer Capital Partners, LP

Sanford Energy Corp

Saga Petroleum

Samson Oil and Gas Ltd.

Santos Ltd.

Sasol Petroleum International

Schlumburger

Shell (Venezuela)

Southwestern Production Corp.

Subsurface Consultants & Associates

Suncor Energy

System Technologies Associates, Inc.

Thunderbird Energy

Tom Brown

Tracker Resource Development

Trailblazer Exploration, LLC

Universal Resources

Ute Indian Tribe

Vectra

Veneco

Vinson & Elkins

Wexpro Company

Wickwire, Green, Brewer, & Seward

Western Gas Resources

Western Hub Properties

Wood Ris & Hames

Whiting Petroleum

Zarlengo and Kimmell

Partial Client List

Clients for Whom Principals Worked Under Previous Employment

Ahtna

Abu Dhabi National Oil Company

Anglo Suisse L.  P.

Anschutz Corporation

Axem Resources, Inc.

Bracewell and Patterson

Celsius Energy Company

Central Bank

Chuska Energy Company

Coastal Oil & Gas

Colorado Utes

Conover, McClearn & Heppenstall

Coopers & Lybrand

Dept.  Of Utilities - Colorado Springs

DST (Deutsche Schachtbau-und

    Tiefbohrgesellschaft mbH) Germany

EXXON, USA

FMC Corporation

Fulbright & Jaworski

Gas Company of New Mexico

Gas Research Institute

Gear Petroleum

Hall & Evans

Hamilton Brothers Oil Company

HPC, Inc.

Internal Revenue Service

Jones, Smead, Wertheim

Keleher & McLeod

Kerr McGee CorporationKimball, Parr, Crockett & Waddoups

Koch Industries

Kodiak Petroleum

Lagoven

Laramie Energy Research Center

Louisiana Land and Exploration Co.

Mallon Oil Company

Marathon Oil U.  K.  Ltd.

Marlis Smith

Meridian Oil Inc.

Mesa Grande, Lte.

Mobil Oil

Montgomery and Andrews

Montgomery, Little, Young & Campbell

Moye, Giles & O’Keefe

N.  L.  Sperry Sun Industries

Norsk Hydro

Northwest Pipeline Corporation

Occidental Petroleum (Caledonia) Ltd.

Occidental Exploration and Production Co.

RP & Rex fuller company

Samuel Montague Energy Services Ltd.

San Diego Gas & Electric

Schlumberger

Sentry Oil Corporation

Shearson Lehman Brothers, Inc.

Shell Oil Company

Sinclair Oil Corporation

Southern Ute Indian Tribe

The Carlyle Group

U.  S.  Department of Energy

Western Gas Processors

White Nights Joint Venture

Williston Gas Company