Exhibit 23(a) CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 33-37175, 33-44541, 33-44542, 33-58613, 33-59253, 33-59255, 333-07949, 333-34135, 333-34161, 333-34165, 333-47847 and 333-63711) and Form S-4 (No. 333-71595) of Santa Fe Energy Resources, Inc. of our report dated March 1, 1999 appearing on page 51 of this Form 10-K. PRICEWATERHOUSECOOPERS LLP Houston, Texas March 5, 1999