EX-23.1 2 dex231.txt E & Y CONSENT Exhibit 23.1 Consent of Independent Auditors We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-57991) pertaining to the Individual Retirement Plan for Bargaining Unit Employees at the Cooper Cameron Corporation Buffalo, New York Plant of our report dated June 12, 2001 with respect to the financial statements of the Individual Account Retirement Plan for Bargaining Unit Employees at the Cooper Cameron Corporation Buffalo, New York Plant included in this Annual Report (Form 11-K) for the year ended December 31, 2000. /s/ Ernst & Young LLP June 27, 2001 Houston, Texas 16