Managing
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 velocity
model were essential in building this new framework. The
focus of this paper is specifically on the uncertainties on the elements and
evolution of the petroleum systems in the Pisco
basin.
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.