Ramirez, Victor O.1 (1) University of Alabama and Ecopetrol - Colombia, Tuscaloosa, Alabama,USA, AL
The stratigraphic section recorded includes Jurassic and Cretaceous units with both petroleum source and reservoir rock potential. The Tertiary interval, Eocene to Upper Miocene, accounts for the majority of the stratigraphic section in the basin, and the main reservoir intervals recognized are Oligocene carbonates and siliciclastics, Lower Miocene calcareous sandstones and Upper Miocene sandstones.
Hydrocarbon occurrences in wells and gas production from fields, along with the interpretation of geophysical (mainly seismics), geological and geochemical information, have resulted in the recognition of four petroleum systems in this basin:
Macarao – Siamana P.S. (.) (Eocene-Oligocene in the northeastern part of the basin); Tertiary – Jimol/Uitpa P.S. (.) (Lower Miocene reservoirs producing in the gas fields); Castilletes-Castilletes P.S. (?) (reservoir potential in Upper Miocene deep water clastic environments); and Mesozoic-Cretaceous P.S. (?) (reservoirs as fractured Cretaceous limestones, with analogy from Venezuelan Mara-La Paz fields).
interpretation from the onshore and platform areas towards the deep offshore
areas provides the framework for modeling the petroleum systems in the
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California