Exhibit 15 August 13, 1999 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 10549 Re: Parker Drilling Company Registration on Form S-8 We are aware that our report dated August 13, 1999, on our review of the interim financial information of Parker Drilling Company for the period ended June 30, 1999 and included in this Form 10-Q is incorporated by reference in the Company's registration statements on Form S-8 (File No. 2-87944, 33-24155, 33-56698, 33-57345 and 333-84069). By:/s/PricewaterhouseCoopers LLP -------------------------------- PricewaterhouseCoopers LLP