EXHIBIT 23
 
                        CONSENT OF INDEPENDENT AUDITORS
 
  We consent to the incorporation by reference in the Registration Statements
(Form S-8) pertaining to (i) the 1996 Equity Participation Plan (No. 333-
05233) (ii) the D.O.S. Ltd. 1993 Stock Option Plan (No. 333-05237) and (iii)
the Tuboscope Vetco International Inc. 401(k) Thrift Savings Plan (No. 333-
43385) of Tuboscope Inc. of our report dated February 4, 1998, with respect to
the consolidated financial statements and schedules of Tuboscope Inc. included
in the Annual Report (Form 10-K) for the year ended December 31, 1997.
 
                                          ERNST & YOUNG LLP
 
Houston, Texas
February 4, 1998