ETCHEGOIN FORMATION CORE DISPLAY SANTA FE ENERGY RESOURCES WELL 504-23 MIDWAY-SUNSET OIL FIELD, CALIFORNIA
Tor H. Nilsen, Albert S. (Buddy) Wylie, Jr., 2001. "ETCHEGOIN FORMATION CORE DISPLAY SANTA FE ENERGY RESOURCES WELL 504-23 MIDWAY-SUNSET OIL FIELD, CALIFORNIA", Geology of the Midway-Sunset Oil Field and Adjacent Temblor Range San Joaquin Basin, California, Tor H. Nilsen, Albert S. (Buddy) Wylie, Jr., Glenn J. Gregory
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The Pliocene Etchegoin Formation forms a distinctive subsurface reservoir unit in the Midway-Sunset field. Because it does not crop out in the adjacent Temblor Range to the west (P1.1), conventional core data is critical for informed interpretations of its reservoir character, facies, and depositional systems. Santa Fe Energy Resources (SFER) recently obtained a 50.6-foot-long conventional core of the Etchegoin Formation in well 504 in section 23, T31S, R22E (see Wylie and Huntoon, Fig. 3, this volume) that is included herein for examination. The cored interval was described quickly and not in great detail by Nilsen in early 1996.