EX-21 16 ex21-0form10k_2003.txt EXHIBIT 21.0 EXHIBIT 21.0 ------------ SUBSIDIARIES OF NEXEN INC. -------------------------- Canadian Nexen Petroleum East Al Hajr Ltd. Incorporated pursuant to the laws of Alberta Canadian Nexen Petroleum Hazar Ltd. Incorporated pursuant to the laws of Alberta Canadian Nexen Petroleum Yemen A partnership doing business in Yemen Canadian Nexen Yemen Ltd. Incorporated pursuant to the laws of Alberta Canadian Petroleum Ecuador Limited Incorporated pursuant to the laws of Jersey Canadian Petroleum Vietnam Ltd. Incorporated pursuant to the laws of Barbados Canadian Petroleum West Africa Holdings Limited Incorporated pursuant to the laws of Jersey Canadian Petroleum Yemen Limited Incorporated pursuant to the laws of Jersey CanadianOxy Offshore Production Co. Incorporated pursuant to the laws of Delaware ICH Capital Management Hungary Limited Liability Company Incorporated pursuant to the laws of Hungary ICM Assurance Ltd. Incorporated pursuant to the laws of Barbados International Capital Corporation Ltd. Incorporated pursuant to the laws of Barbados International Capital Holdings Limited Incorporated pursuant to the laws of Malta Long Lake Synthetic Crude Management Company Ltd. Incorporated pursuant to the laws of Alberta Nexen Canada Ltd. Incorporated pursuant to the laws of Saskatchewan Nexen Chemicals (B.C.) Ltd. Incorporated pursuant to the laws of British Columbia Nexen Chemicals Canada Limited Partnership A partnership formed pursuant to the laws of British Columbia Nexen Chemicals Canada Ltd. Incorporated pursuant to the laws of Alberta Nexen Chemicals Holdings International Limited Incorporated pursuant to the laws of Jersey 1 Nexen Chemicals Holdings U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen Chemicals U.S.A. A partnership formed pursuant to the laws of Delaware Nexen Chemicals U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen E & P Services Nigeria Limited Incorporated pursuant to the laws of Nigeria Nexen Energy Holdings International Limited Incorporated pursuant to the laws of Jersey Nexen Energy Services International Ltd. Incorporated pursuant to the laws of the United Kingdom Nexen Field Services Nigeria Limited Incorporated pursuant to the laws of Nigeria Nexen Holdings U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen Marketing A partnership formed pursuant to the laws of Alberta Nexen Marketing International Ltd. Incorporated pursuant to the laws of Barbados Nexen Marketing Singapore Pte Ltd. Incorporated pursuant to the laws of Singapore Nexen Marketing U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen No. 5 Ltd. Incorporated pursuant to the laws of Alberta Nexen of California, Inc. Incorporated pursuant to the laws of Delaware Nexen Oil and Gas U.S.A. Inc. Incorporated pursuant to the laws of Wyoming Nexen Oilfield Services Nigeria Ltd. Incorporated pursuant to the laws of Barbados Nexen Petroleum Australia Pty Limited Incorporated pursuant to the laws of Australia Nexen Petroleum Canada A partnership formed pursuant to the Laws of Saskatchewan Nexen Petroleum Capital Management U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen Petroleum Colombia Limited Incorporated pursuant to the laws of Jersey 2 Nexen Petroleum do Brasil Ltda. Incorporated pursuant to the laws of Brazil Nexen Petroleum Equatorial Guinea Limited Incorporated pursuant to the laws of Jersey Nexen Petroleum Exploration and Production Nigeria Limited Incorporated pursuant to the laws of Nigeria Nexen Petroleum Holdings Australia Pty Limited Incorporated pursuant to the laws of Australia Nexen Petroleum Holdings U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen Petroleum International Ltd. Incorporated pursuant to the laws of Alberta Nexen Petroleum International (U.S.A.) Inc. Incorporated pursuant to the laws of Delaware Nexen Petroleum Nigeria Limited Incorporated pursuant to the laws of Nigeria Nexen Petroleum Nigeria Offshore Ltd. Incorporated pursuant to the laws of Alberta Nexen Petroleum North Africa Limited Incorporated pursuant to the laws of Jersey Nexen Petroleum Offshore Brazil Ltd. Incorporated pursuant to the laws of Alberta Nexen Petroleum Offshore Equatorial Guinea Ltd. Incorporated pursuant to the laws of Alberta Nexen Petroleum Offshore Systems U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen Petroleum Offshore U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen Petroleum Operations Yemen Limited (Incorporated pursuant to the laws of Bermuda) Continued pursuant to the laws of Jersey Nexen Petroleum Resources Nigeria Limited Incorporated pursuant to the laws of Nigeria Nexen Petroleum Sales U.S.A. Inc. Incorporated pursuant to the laws of Texas Nexen Petroleum U.S.A. Inc. Incorporated pursuant to the laws of Delaware Nexen Quimica Brasil Ltda. Incorporated pursuant to the laws of Brazil 3 Nexen Services Jersey Limited Incorporated pursuant to the laws of Jersey Wascana Energy 2001 Ltd. Incorporated pursuant to the laws of Saskatchewan 4