1 EXHIBIT NO. 15.1 October 31, 1997 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Ladies and Gentlemen: We are aware that ENSCO International Incorporated has included our report dated October 31, 1997 (issued pursuant to the provisions of Statement on Auditing Standards No. 71) in the Company's Registration Statements on Form S-3 (Nos. 33-42965, 33-46500, 33-49590, 33-43756, 33-64642, 333-3575 and 333-37897), and any existing amendments thereto, and Form S-8 (Nos. 33-14714, 33-32447, 33-35862, 33-40282 and 33-41294). We are also aware of our responsibilities under the Securities Act of 1933. Yours very truly, /s/ Price Waterhouse LLP - ------------------------ Dallas, Texas