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The AAPG/Datapages Combined Publications Database
AAPG Special Volumes
Abstract
Eguiluz-de Antunano, S.,
DOI:10.1306/13191077M902621
2009 by The American Association of Petroleum Geologists.
The Yegua Formation: Gas Play in the Burgos Basin, Mexico
Samuel Eguiluz-de Antunano
Consultant, Manchester, United Kingdom
ACKNOWLEDGMENTS
Thanks to Claudio Bartolini for the opportunity to publish this work and opening the door for geoscientific interaction. The manuscript has been substantially improved thanks to constructive comments made by Thomas Ewing, Arthur Berman, Marc Edwards, and Josh Rosenfeld. Special thanks to Natalia Amezcua for her valuable assistance in the preparation and constructive reviews of the manuscript. The author is grateful to Petrole
s Mexicanos for allowing the release of the data herein.
ABSTRACT
The Yegua Formation (Eocene) in the Burgos Basin is divided into three units. The lower Yegua represents a highstand systems tract (HST) whose top is truncated by a prominent regional 
sequence
boundary at around 39.5 Ma. The middle Yegua is a facies complex that consists of basin-floor fan sandstones, channels, and unconformities corresponding to a lowstand systems tract and prograding wedge. The upper Yegua represents an HST underlying the Jackson Formation. The Yegua Formation probably reflects the final sediment influx toward the Gulf of Mexico Basin resulting from Laramide uplift and deformation.
The proposed sedimentary model and petroleum system allow for the increase of reserves and productivity in the Yegua gas play of the Burgos Basin.
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