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Book Chapter

Petroleum Systems Analysis of the Eastern Colorado Basin, Offshore Northern Argentina

By
David C. Bushnell
David C. Bushnell
YPF/Maxus Dallas, Texas, U.S.A. Currently: Consultant Dallas, Texas, U.S.A.
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Jorge E. Baldi
Jorge E. Baldi
Repsol YPF Buenos Aries, Argentina Currently: Repsol YPF Rio de Janeiro, Brazil
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Fernando H. Bettini
Fernando H. Bettini
Repsol YPF Buenos Aries, Argentina
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Humberto Franzin (Retired)
Humberto Franzin (Retired)
Repsol YPF Buenos Aries, Argentina
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Edward (Ned) Kovas
Edward (Ned) Kovas
Repsol YPF Dallas, Texas, U.S.A. Currently: Repsol YPF Buenos Aires, Argentina
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Raúl Marinelli (Retired)
Raúl Marinelli (Retired)
Repsol YPF Buenos Aries, Argentina
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Grant J. Wartenburg
Grant J. Wartenburg
Maxus (subsidiary of Repsol YPF) Dallas, Texas, U.S.A. Currently: Repsol YPF The Woodlands, Texas, U.S.A.
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Published:
January 01, 2000

Abstract

The Colorado Basin is a large (100,000-km2), deep (15,000-m) Cretaceous and Tertiary clastic sedimentary basin located offshore from southern Buenos Aires Province, Argentina. Static components of the petroleum systems—source, reservoir, seal, and overburden—are either present or can be reasonably predicted from well and seismic data. However, the best structural traps are buried beneath 7000 m of sedimentary rocks. Basin-edge stratigraphic traps are suggested in the geometry of the seismic data but are difficult to delineate stratigraphically. Exploratory drilling has so far been unsuccessful.

It is the timing of the dynamic petroleum system factors that has negatively impacted the success of the potential petroleum systems in the basin. A 4000-m Cretaceous sandstone section has pushed the most likely source rock candidate completely through the oil window before deposition of the regional seal. Any hydrocarbons that might have been expelled would have migrated vertically to the surface and been lost. Migration paths, although simple and easily delineated, tend to be dispersive near the central basin but focus on broad areas of the basin flanks.

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Contents

AAPG Memoir

Petroleum Systems of South Atlantic Margins

Marcio Rocha Mello
Marcio Rocha Mello
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Barry J. Katz
Barry J. Katz
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American Association of Petroleum Geologists
Volume
73
ISBN electronic:
9781629810706
Publication date:
January 01, 2000

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