Geological Uncertainties in Oil Generation, Migration and Entrapment in the
Callejon, Angel F.1, Peter A. Emmet2,
Robert Hickman3, Tarek Y. Ghazi4,
Glenn W. Granata5, Rolando Bolaños6, Maurice Slot7 (1)
Platte River Associates, Inc, Houston, TX (2) Brazos Valley G&G Services,
Cypress, TX (3) Structural Solutions, Sugar Land, TX (4) Gaffney, Cline
& Associates, Inc,
Under the sponsorship of Perupetro SA
a renewed vision of exploration in offshore
A solid, new, tectono-stratigraphic correlation scheme across the region suggests the presence of not only Tertiary depocenters, but also thick Cretaceous sediments that may accommodate early Cretaceous source rock. Collected heat flow data is consistent with a regional average of 45 mW/m2 that provide these basins adequate energy for oil generation in the kitchen pods.
The results, after modeling oil generation, using a kinetic
approach based on analogous source rocks in
Fluid flow of hydrocarbons and a probabilistic estimation of the volumes of hydrocarbons expelled and available for entrapment highlight areas of interest in this undrilled basin. The evolution of the petroleum system through geological time allowed the explorationists to identify the timing between oil expulsion and the location of the structural and stratigraphic plays in the basin.