Depocenter Migration From the Identification of Genetic Sequences in the Senoian to Paleocene in the Southeast of Santos Basin

Abstract

Abstract

Nowadays, the exploration of non-renewable resources requires a much more accurate geological knowledge, as it is the case of oil exploration where each day the geological challenges increase with the complexity of the plays. This is why the integration of various tools can increase the probability of success on the road to new discoveries.

With the implementation of seismostratigraphic interpretation techniques and stratigraphic sequences to the analysis of sedimentary basins, we can get the detailed stratigraphic framework of the different genetic units, although we can study different scales. Within one sequence it is possible to predict the continuity, connectivity and extent of sand bodies, in which seismic reflectors are grouped into ranges that correspond to genetically related seismofacies and chronostratigraphically limited.

The Santos Basin is one of the main Brazilian sedimentary basins for exploration and production of oil and gas, and has received increasing attention over the past few years given the recent large discoveries in the reservoirs of the pre-salt basin section, in addition to their traditional Cretaceous plays and current plays in the Lower Tertiary. The Santos Basin is situated in a unique geological context because of its adjacency to the Serra do Mar, a mountain range developed in the Tertiary in the context of a passive margin. (Fig. 1 Location study area). directed to the basin as well as the organization of the drainage that placed prominent deltaic systems in the Upper Cretaceous and Lower Tertiary sections of the basin.

With seismostratigraphic interpretation (Fig. 2 Line R0003_GRAND_SANTOS.0248-0064), of the Upper Cretaceous and Lower Tertiary sections of the southeastern portion of the Santos Basin, depositional systems were identified from the characterization of seismofacies, the integration of lithological data and well log profiles with the objective of modeling a tectonic-stratigraphic framework in order to understand the influence of the tectonic controls on the sedimentary record of the Upper Cretaceous to Tertiary section of the basin in the area of study.

AAPG Datapages/Search and Discovery Article #90260 © 2016 AAPG/SEG International Conference & Exhibition, Cancun, Mexico, September 6-9, 2016