EXHIBIT 23 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the incorporation by reference in the Registration Statement of Unocal Corporation on Form S-8 (No. 33-65461) of our report, dated June 26, 1998, on our audits of the financial statements and supplemental schedules of the Unocal Savings Plan as of December 31, 1997 and 1996 and for the years then ended which report is included in this annual report on Form 11-K. COOPERS & LYBRAND L. L. P. Los Angeles, California June 26, 1998