Skip to Main Content
Book Chapter

Gas Generation Potential of Upper Jurassic (Tithonian) Source Rocks in the Sonda de Campeche, Mexico

By
Demetrio Santamaría-Orozco
Demetrio Santamaría-Orozco
Instituto Mexicano del Petróleo, Exploración, Mexico City, Mexico
Search for other works by this author on:
Brian Horsfield
Brian Horsfield
GeoForschungsZentrum, Potsdam, Germany
Search for other works by this author on:
Published:
January 01, 2003

Abstract

In the Sonda de Campeche offshore region of Mexico, the Tithonian sedimentary sequence is the most important source of hydrocarbons that occur today in Paleocene traps. The maturity of both source rocks and petroleum in reservoirs is known to increase from northeast to southwest across the region. This is manifested at the molecular level and in bulk petroleum properties such as API gravity and gas-oil ratio (GOR). We have analyzed a selection of source-rock samples from across the area, covering the entire maturity spectrum, by pyrolysis gas chromatography. These data give insights into the GOR of yet-to-be-generated petroleum for each maturity stage. A mass-balance model based on these same data and complementary data from laboratory experiments (MSSV pyrolysis) provided cumulative GOR as a function of generation stage (transformation ratio). Regional field GOR trends are consistent with instantaneous rather than cumulative GOR predictions, thereby supporting the notion of mainly localized vertical migration avenues in association with a late timing of trap formation.

You do not currently have access to this article.

Figures & Tables

Contents

AAPG Memoir

The Circum-Gulf of Mexico and the Caribbean: Hydrocarbon Habitats, Basin Formation and Plate Tectonics

Claudio Bartolini
Claudio Bartolini
Search for other works by this author on:
Richard T. Buffler
Richard T. Buffler
Search for other works by this author on:
Jon F. Blickwede
Jon F. Blickwede
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
79
ISBN electronic:
9781629810546
Publication date:
January 01, 2003

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal