Abu Dhabi National Oil
Agiba Petroleum (Egypt)
AGIP (Kazakhstan)
Agip (Overseas) (Albania)
Agip Petroleum (U.S.A.)
Agip S.p.A. (Italy)
Agip UK
Alexandria Petroleum (Egypt)
Amerya Petroleum (Egypt)
Amni International (Nigeria)
Amoco Production
Anadarko Petroleum
ARCO Indonesia
Asamera Oil
Atlantic Richfield (Indonesia)
Bank of Scotland (U.K.)
Bank of Tokyo (Japan)
Bank of Uganda
Bank One, Houston
Bank One, Dallas
Bank One, Fort Worth
Belayim Petroleum (Egypt)
BHP Petroleum
BP Exploration
BPMIGAS (Indonesia)
Bridas, S.A. (Argentina)
British Gas Trinidad
British Petroleum Exploration
Brunei National Petroleum
Cagayan Electric Power (Philippines)
Cairn Energy (India)
Cairo Oil Refining (Egypt)
Canadian Occidental
Cavendish Petroleum Nigeria
Central Electricity Authority (India)
Centurion Ghana Ltd.
Centurion LLP (Equatorial Guinea)
Chevron Bangladesh
Chevron Nigeria Ltd.
CNOOC (China)
CNPC (China)
SINOPEC (China)
Chinese Petroleum Corp. (Taiwan)
Comerica Bank Texas
Comerica Bank, Dallas (U.S.A.)
Commercial National Bank U.S.A.
Congreso de la Republica (Peru)
Conoco, Inc.
Corpoven (Venezuela)
Costa Rican Refinery
Credit Agricole (France)
Credit Suisse (Switzerland)
Kazakh Hydrocarbons
Deutsche Bank (Germany)
Direccion de Hidrocarburos (Peru)
Direccion de Negotiaciones Bolivia
Direction Hydrocarbure Ivory Coast
ECOPETROL (Colombia)
Egyptian General Petroleum Corp.
Electricity Authority of Thailand
Elf Aquitaine (France)
Elf Exploration, Inc.
Energy Board (Philippines)
Energy Commission (Ghana)
Engineering Services (Indonesia)
ENH (Mozambique)
ENI Venezuela
Enserch Corporation (U.S.A)
Express Petroleum (Nigeria)
Exxon USA Co.
GAZPROM (Russia)
Geisum Oil (Egypt)
General Directory Oil (Albania)
General Petroleum (Egypt)
GEPetrol (Equatorial Guinea)
Ghana National Petroleum
Grana y Montero (Peru)
Great Western Drilling
Gulf of Suez Petroleum (Egypt)
Halliburton Energy (U.S.A.)
Heritage Colombia
Hibernia National Bank (U.S.A.)
Hocol S.A. (Colombia)
Houston Exploration Company
I.E.O.C. (Egypt)
Idemitsu Petroleum (UK)
Indian Oil Corporation (India)
INP (Mozambique)
Intevep (Venezuela)
Kaduna Refining (Nigeria)
Kazakh National Gas Co.
Kazakhstancaspishelf Co.
Kuwait Oil Co.
Kuwait Petroleum Corp.
Lagoven (Venezuela)
Lasmo Oil
Lemigas (Indonesia)
Lukoil Overseas (Ghana)
Lukoil Overseas (Kazakhstan)
Manila Electric (Philippines)
Maraven (Venezuela)
Mariner Energy (U.S.A.)
Maxus Energy Corp. (U.S.A.)
Maxus Sumatra (Indonesia)
Meridian Oil Inc. (U.S.A.)
Ministere Hydrocarbures (Congo)
Ministerio de Energia (Peru)
Ministry of Electricity (Oman)
Ministry of Energy (Albania)
Ministry of Energy (Burundi)
Ministry of Energy (Ecuador)
Ministry Energy Equatorial Guinea
Ministry of Energy (India)
Ministry of Energy (Jamaica)
Ministry of Energy (Mozambique)
Ministry of Energy (Namibia)
Ministry of Energy (Niger)
Ministry of Energy (Trinidad)
Ministry of Energy (Tanzania)
Ministry of Finance (Pakistan)
Ministry Mines and Energy (Ghana)
Ministry Natural Resources (Tongo)
Ministry of Oil (Iraq)
Ministry of Petroleum (Kenya)
Ministry of Petroleum (Pakistan)
Ministry of Petroleum (Nigeria)
Ministry of Planning (Nigeria)
Ministry of Planning, (Pakistan)
Mobil del Peru
Mobil Equatorial Guinea

Mobil Indonesia
Mobil Producing Nigeria
MOL Hungarian Oil & Gas
Montana Power Co.
Murphy Oil Corp.
NAMCOR (Namibia)
NAPIMS (Nigeria)
Nasr Petroleum Co. (Egypt)
National Drilling Co. (U.A.E.)
National Electric (Nigeria)
National Energy (Thailand)
Environment Secretariat (Kenya) National Oil Corp. (Kenya)
National Power Corp. (Philippines)
Neste Oy (Finland)
Nigerian Agip Oil Co. (Nigeria)
NNPC (Nigeria)
Nippon Oil Exploration Co. Japan
Noble Energy (Equatorial Guinea)
Norsk Agip (Norway)
North Gas Company (Iraq)
Norwegian School of Management
Occidental de Colombia
Occidental International E & P
Ocean Energy (Ivory Coast)
Office of Energy (Philippines)
Office, Solicitor General (Trinidad)
OGDC (Pakistan)
Oil Industry Board (India)
OMV (Austria)
ONAREP (Morocco)
ONGC Videsh Overseas (India)
ONHYM (Morocco)
Oriental Energy (Nigeria)
Oxy USA Inc.
P. T. Caltex (Indonesia)
P. T. Indoturbine (Indonesia)
Pakistan Petroleum Ltd.
Paradise Oil Co. (Suriname)
Pecten International Co.
PEMEX (Mexico)
Pennzoil Company
Perez Companc (Argentina)
PERUPETRO (Peru)
PETAMINA (Indonesia)
Petro-Tech (Peru)
PETROBANGLA (Bangladesh)
PETROBRAS (Brazil)
PETROBRAS (Nigeria)
PETROCI (Cote D’Ivoire)
PETROGAS (Oman)
Petroleum Conservation (India)
Petroleum Corporation (Jamaica)
Petroleum E & P Dept. (Uganda)
Petroleum Pipelines Co. (Egypt)
PETROMAR (Peru)
PETROMOC (Mozambique)
Petromoc e Sasol (Mozambique)
PETRONAS (Malaysia)
PETROTRIN (Trinidad)
Phillips Petroleum Co.(U.S.A.)
Chevron (USA.)
Ping Petroleum (Malaysia)
Pluspetrol (Peru)
Pogo Producing Co. (USA)
PT Medco E & P (Indonesia)
PTT E & P (Thailand)
Qarun Petroleum (Egypt)
Qatar General Petroleum Corp.
Questar Development Corp.
Refineria La Pampilla (Peru)
Repsol Exploracion (Peru)
Repsol Exploracion (Spain)
Risjad Resources (Indonesia)
Romanian National Oil Co.
Saga Petroleum (Norway)
Santos Ltd. (Australia)
Schlumberger (Colombia)
Schlumberger (Russia)
Schlumberger (U.K.)
Schlumberger (Venezuela)
Seagull Petroleum (Egypt)
SGS del Peru (Peru)
Shell Canada (Canada)
Sky Petroleum (U.S.A.)
Societe d’Electrtricite (Congo)
SONAGAS Equatorial Guinea
SONANAGOL (U.S.A.)
SONANGOL (Angola)
SONATRACH (Algeria)
STAATSOLIE (Suriname)
STATOIL Venezuela
Suez Oil Company (Egypt)
Sui Northern Gas (Pakistan)
SUMED (Egypt)
Sumitomo Bank (Japan)
T.P.D.C. (Tanzania)
Tanzania Revenue Authority
Tata Energy Institute (India)
Tex/Con Oil Co. (U.S.A.)
TEXACO
TEXACO Trinidad Inc.
The Mitsubishi Bank (Japan)
Thums Longbeach Oil (U.S.A.)
Total E & P Nigeria
TPAO (Azerbaijan)
Trans-Asia Oil (Philippines)
TRINMAR (Trinidad)
Tullow (Ghana)
Turkiye Petrolleri
Uni Petro (Peru)
Union Pacific Resources
Universidad de San Marcos (Peru)
Universidad de Ingenieria (Peru)
University of Alaska
Unocal Indonesia
Unocal North America
Unocal Thailand (Thailand)
Vegsa (Peru)
Vernon Angola Oil Services
VICO Indonesia
Virginia Indonesia Co.
Volta River Authority (Ghana)
Warri Refining (Nigeria)
West Australian Petroleum
Westinghouse Credit Corp. U.S.A.
YPF (Argentina)
YPF del Peru (Peru)
Zakum Development Co. (Abu Dhabi)