2D Petroleum System Modeling and Exploration Risk Assessment of Equatorial Margin Barreirinhas Basin

July 26, 2023
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Report summary

Barreirinhas Basin is located in the Brazilian Equatorial Margin, both on land and at sea, approximately between the meridians 44°W and 42ºW and the parallels of 00 and 30° S. It occupies an area of approximately 46,000km², of which only 8,500km² are emerged, and the remaining corresponds to the offshore portion that extends to the 3,000m isobath. To the west, the Ilha de Santana Platform is a barrier that extends from the shallow to the deep-water basin. In order to evaluate the exploratory potential of Pará-Maranhão Basin, Brazilpetrostudies have developed a study to rank the best areas for petroleum exploration based on the integration of different approaches and exploration tools like seismic interpretation and mapping, high-resolution geochemistry, reservoir petrophysics, tectonic, structural and stratigraphic framework reconstruction and petroleum system quantitative modeling.

Table of contents

1. Introduction
2. Regional Geology
2.1. Tectonic Evolution of the Equatorial Margin
2.2. Barreirinhas Structural and Stratigraphic Framework
2.3. Exploratory History
3. Petroleum System Overview through Geochemistry of the Oils from Barreirinhas Basin
3.1. Aptian/Lower Albian Marine Hypersaline (!) Oil
3.2. Albian-Cenomanian Marine Anoxic (!) Oil
4. Seismic Interpretation and Geological Characteristics of the Area
4.1. Seismic Data Quality Control
4.2. Well Tying
4.3. Regional Mapping
4.4. Leads Definition
5. Stratigraphic Modeling
5.1. Quality Control of Well Data
5.2. Characterization of Potential Reservoirs
5.3. Regional Correlations
5.4. Play Fairway Mapping
6. 2D Petroleum Systems Modeling
6.1. Model Input
6.2. Calibration
6.3. P /T Modeling Results
6.4. Migration Modeling Results
6.5. Modeling Conclusions
7. Overall Conclusions
8. References

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