Exhibit 21.1
SUBSIDIARIES OF NEXEN AS AT JANUARY 31, 2009
1219391 Alberta Ltd.
Incorporated pursuant to the laws of Alberta
Canadian Nexen Petroleum East Al Hajr Ltd.
Incorporated pursuant to the laws of Alberta
Canadian Nexen Petroleum Yemen
A partnership doing business in Yemen
Canadian Petroleum Vietnam Ltd.
Incorporated pursuant to the laws of Barbados
Canadian Petroleum Yemen Limited
Incorporated pursuant to the laws of Jersey
CanadianOxy Offshore Production Co.
Incorporated pursuant to the laws of Delaware
Canexus Limited Partnership
A partnership formed pursuant to the laws of Alberta
ICH Capital Management Hungary Limited Liability Company
Incorporated pursuant to the laws of Hungary
ICM Assurance Ltd.
Incorporated pursuant to the laws of Barbados
ICM Capital Limited
Incorporated pursuant to the laws of Barbados
International Capital Holdings Limited
Incorporated pursuant to the laws of Malta
Long Lake Finance Management Ltd.
Incorporated pursuant to the laws of Alberta
Long Lake Synthetic Crude Management Company Ltd.
Incorporated pursuant to the laws of Alberta
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 Crossfield Partnership
A partnership formed pursuant to the laws of Alberta
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 Marketing Europe Limited
Incorporated pursuant to the laws of the United Kingdom
Nexen Energy Marketing London Limited
Incorporated pursuant to the laws of the United Kingdom
Nexen Energy Marketing Middle East Limited
Incorporated pursuant the laws of Dubai
Nexen Energy Marketing Nigeria Limited
Incorporated pursuant to the laws of Nigeria
Nexen Energy Services International Ltd.
Incorporated pursuant to the laws of the United Kingdom
Nexen Ettrick U.K. Limited
Incorporated pursuant to the laws of the United Kingdom
Nexen Exploration Norge AS
Incorporated pursuant to the laws of Norway
Nexen Exploration U.K. Limited
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 Holdings West Africa Limited
Incorporated pursuant to the laws of Jersey
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 Med Hat-Hatton Partnership
A partnership formed pursuant to the laws of Alberta
Nexen No. 6 Ltd.
Incorporated pursuant to the laws of Alberta
Nexen of California, Inc.
Incorporated pursuant to the laws of Delaware
Nexen Oil & Gas U.K. Developments LP
A partnership formed pursuant to the laws of the United Kingdom
Nexen Oil and Gas U.S.A. Inc.
Incorporated pursuant to the laws of Wyoming
Nexen Oil Sands Partnership
A partnership formed pursuant to the laws of Alberta
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 Capital Management U.S.A. Inc.
Incorporated pursuant to the laws of Delaware
Nexen Petroleum Colombia Limited
Incorporated pursuant to the laws of Jersey
Nexen Petroleum Deepwater Nigeria Limited
Incorporated pursuant to the laws of Nigeria
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 (U.S.A.) Inc.
Incorporated pursuant to the laws of Delaware
Nexen Petroleum International Co.
Amalgamated pursuant to the laws of Nova Scotia
Nexen Petroleum Libya Ltd.
Incorporated pursuant to the laws of Alberta
Nexen Petroleum Madagascar Limited
Incorporated pursuant to the laws of Jersey
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 Equatorial Guinea Ltd.
Incorporated pursuant to the laws of Alberta
Nexen Petroleum Offshore U.S.A. Inc.
Incorporated pursuant to the laws of Delaware
Nexen Petroleum Operations Yemen Limited
Continued pursuant to the laws of Jersey
Nexen Petroleum Sales U.S.A. Inc.
Incorporated pursuant to the laws of Texas
Nexen Petroleum U.K. Holdings Limited
Incorporated pursuant to the laws of the United Kingdom
Nexen Petroleum U.K. Limited
Incorporated pursuant to the laws of the United Kingdom
Nexen Petroleum U.S.A. Inc.
Incorporated pursuant to the laws of Delaware
Nexen Services Jersey Limited
Incorporated pursuant to the laws of Jersey
Quadra Energy 2006 Ltd.
Incorporated pursuant to the laws of Alberta
Quadra Energy Trading Ltd.
Incorporated pursuant to the laws of Alberta
Wascana Energy 2001 Ltd.
Incorporated pursuant to the laws of Saskatchewan