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Tectonostratigraphic Evolution of the Northern Llanos Foreland Basin of Colombia and Implications for Its Hydrocarbon Potential

By
Henry Campos
Henry Campos
Previous Address: Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, 2305 Speedway, Stop C1160, Austin, Texas 78712, U.S.A.
Shell Exploration and Production Company, 150 N. Dairy Ashford, Houston, Texas 77079, U.S.A. (e-mail: hmcamposa@yahoo.com)
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Paul Mann
Paul Mann
Department of Earth and Atmospheric Sciences, College of Natural Sciences and Mathematics, University of Houston, 3507 Cullen Blvd., Houston Texas 77004, U.S.A. (e-mail: pmann@uh.edu)
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Published:
January 01, 2015

Abstract

The Llanos Basin of Colombia is located along the eastern flank of the Andes in northern South America. The basin covers an area of approximately 194,000 km2 and it is drained toward the east and northeast by the Arauca, Meta, Casanare, and Vichada Rivers and their tributaries that join the Orinoco River. Petroleum exploration activity in this basin began with the drilling of the first well in 1944. Since then, two oil giants (Cano Limon and Castilla), three major oil fields (Rubiales, Apiay, and the Tame Complex), and more than 50 minor oilfields have been discovered, representing 1500 MBOE of cumulative production and estimated remaining reserves of more than 3050 MBOE. These hydrocarbon volumes make the Llanos Basin very prospective for future giant- to medium-size field discoveries, for which a complete understanding of the basin’s geologic evolution is necessary. Key factors in the petroleum potential of the Llanos Basin include the deposition of Cretaceous marine source rocks that were deeply buried and matured and multiple phases of orogeny that generated numerous structural and stratigraphic traps and pathways for oil migration. The main aim of this study is to provide an overview of the tectonostratigraphic evolution of the northern and central parts of the Llanos Basin, based on previously published information and our own seismic interpretations and flexural modeling of the foreland basin.

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Contents

AAPG Memoir

Petroleum Geology and Potential of the Colombian Caribbean Margin

Claudio Bartolini
Claudio Bartolini
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Paul Mann
Paul Mann
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American Association of Petroleum Geologists
Volume
108
ISBN electronic:
9781629812724
Publication date:
January 01, 2015

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