National Oilwell Varco 2003 Annual Report Download - page 57

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56
Exhibit 23.1
CONSENT OF INDEPENDENT AUDITORS
We consent to the incorporation by reference in the following Registration Statements of
National-Oilwell, Inc. and in the related Prospectuses of our report dated February 12,
2004, with respect to the consolidated financial statements and schedule of National-
Oilwell, Inc. included in this Annual Report (Form 10-K) for the year ended December
31, 2003.
Form Description
S-8 Stock Award and Long Term Incentive Plan, Value Appreciation and Incentive
Plan A and Value Appreciation and Incentive Plan B (No. 333-15859)
S-8 National-Oilwell Retirement and Thrift Plan (No. 333-36359)
S-8 Post Effective Amendment No. 3 to the Registration Statement on Form S-4 filed
on Form S-8 pertaining to the Dreco Energy Services Ltd. Amended and Restated
1989 Employee Incentive Stock Option Plan, as amended, and Employment and
Compensation Arrangements Pursuant to Private Stock Option Agreements (No.
333-21191)
S-8 Post Effective Amendment No. 1 on Form S-8 to Registration Statement on Form
S-4 pertaining to the IRI International Corporation Equity Incentive Plan (No.
333-36644)
S-3 Registration Statement on Form S-3 pertaining to the issuance of 3,200,000 shares
to Halliburton Energy Services, Inc. (No. 333-102665)
/s/ ERNST & YOUNG LLP
Houston, Texas
March 10, 2004