Exhibit 21.1

COOPER CAMERON CORPORATION — SUBSIDIARIES & JOINT VENTURES
(As of February 26, 2004)

							State/Country of
	% Owned			% Owned			Incorporation or
Cooper Cameron Corporation (Delaware)—Parent	By Subsidiary			by CCC			Organization
Cameron Algerie (1 share owned by CCPEG)					100	%	Algeria
Cameron Argentina S.A.I.C. (122,700 shares owned by CCPEG)	Less than 1%				100	%	Argentina
Cameron Gabon, S.A. (1 share owned by Chairman)					100	%	Gabon
Cameron GmbH					100	%	Germany
Cameron Services Middle East LLC (Joint Venture)					24	%	Oman
Cameron Venezolana, S.A.					100	%	Venezuela
-Cameron Remanufacturas, C.A.		100	%				Venezuela
-Camercay, Ltd.		100	%				Grand Cayman
Compression Services Company					100	%	Ohio USA
Cooper Cameron Foreign Sales Company Ltd.					100	%	Barbados
Cooper Cameron Holding (Cayman) Limited					100	%	Cayman
-Cameron Australasia Pty. Ltd.		100	%				Australia
-Cooper Cameron do Brasil Ltda. (1 share owned by CC (Lux) SARL)		100	%				Brazil
-Cooper Cameron (Trinidad) Limited		100	%				Trinidad and Tobago
-Cooper Cameron Holding (Luxembourg) SARL		100	%				Luxembourg
-Cooper Cameron (Gibraltar) Limited		100	%				Gibraltar
–Cooper Cameron (Luxembourg) SARL		100	%				Luxembourg
—Cameron Ireland Limited		100	%				Ireland
—Cooper Cameron Holding Dutch B.V.		100	%				Netherlands
—Cooper Cameron Canada Corporation		100	%				Canada
—Cooper Cameron Holding (U.K.) Limited		100	%				United Kingdom
—Cameron France, S.A.S.		100	%				France
—Cooper Cameron (U.K.) Limited		100	%				United Kingdom
—–Cooper Cameron (U.K.) Investments Limited		100	%				United Kingdom
——Flow Link Systems Private Ltd.		100	%				India
——Nutron Manufacturers (India) Private Limited		100	%				India
——Flow Control-Tati Production Sdn. Bhd.		100	%				Malaysia
——Nutron Flow Control Sdn. Bhd.		100	%				Malaysia
—–Cameron Offshore Engineering Limited		100	%				United Kingdom
—–Cooper Cameron Pensions Limited		100	%				United Kingdom
—–Cameron Integrated Services Limited		100	%				United Kingdom
——Sherkate Mohandesi Hafar Chah Jonoob		50	%				Iran
—Cooper Cameron Holding B.V.		100	%				Netherlands
—–Cooper Energy Services B.V.		100	%				Netherlands
—–Cameron B.V.		100	%				Netherlands
—–Cooper Cameron Holding (Norway) AS		100	%				Norway
——Cameron Norge AS		100	%				Norway
- Cooper Cameron (Singapore) Pte. Ltd.		100	%				Singapore
- Riyan Cameron (B) Sendirian Berhad		100	%				Brunei
Cooper Cameron (Holding) Corp.					100	%	Nevada USA
- Cooper — Texgas Ltd. (1 share owned by Compression Services Co)		50	%				Colombia
Cooper Cameron International Holding Corp.					100	%	Nevada USA
Cooper Cameron Corporation Nigeria Limited					60	%	Nigeria
Cooper Cameron S.R.L.					100	%	Italy
Cooper Energy Services de Venezuela, S.A.					100	%	Venezuela
Cooper Energy Services International, Inc.					100	%	Ohio USA
-Canada Tiefbohrgeräte und Maschinenfabrik GmbH		100	%				Austria
Cooper Cameron de Mexico S.A. de C.V. (1 share owned by CCPEG)					100	%	Mexico
Cooper Cameron Petroleum Equipment Group, Inc. (CCPEG)					100	%	Delaware USA
Cooper Turbocompressor, Inc.					100	%	Delaware USA
Lyulka-Cooper (Russian Federation Joint Venture)		50	%		50	%	Russia
Orbit Valve International, Inc.					100	%	Arkansas USA
-Orbit Valve Company		100	%				Arkansas USA
Wellhead Services, Inc.					100	%	Nevada USA
-Cooper Cameron (Malaysia) Sdn Bhd		49	%				Malaysia

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