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| Author(s): |
Cristian Ricardo Mendoza Blanco
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Mecânica |
| Defense date: | 2022-08-01 |
| Examining board members: |
Alexandre Campane Vidal;
Michelle Chaves Kuroda;
Aline Maria Poças Belila
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| Advisor: | Alexandre Campane Vidal |
| Abstract | |
The offshore Santos Basin is a prolific basin with great potential for exploration of hydrocarbons, this due in part to its tectonic evolution and stratigraphy associated with lacustrine carbonates discovered in the Brazilian deep-water underneath the salt. The high permeability in this basin is likely controlled by high fracture intensities and carbonate dissolution, therefore, predicting the behavior of natural fractures in these deposits will help to understand their effects on fluid flow and reservoir productivity. This study focuses on the construction of a discrete fracture network model based on the understanding of intensity, orientation, and spatial distribution of the fractures, this was accomplished through the use of tools such as borehole image logs of 4 wells, and 3-D seismic data. From these tools was possible to identify the main horizons (top and base of the pre-salt play), regional faults, as well as allowed the interpretation of fractures and the in?situ stress state in the pre-salt play of the Santos Basin. In this work, we found that in accordance with the borehole breakouts and drilling?induced fractures the maximum horizontal stress (SHmax) has an azimuth NE-SW, which compared with the orientation and regime of large seismic scale structures in the reservoir, it is possible to highlight that the study area is influenced by a normal fault pattern and extensional stress configuration. In addition, according to open natural fractures we identified four sets, of which set 1 and 2 follow a strike parallel to SHmax NE-SW and sets 3 and 4 follow a strike parallel to Shmin. Regarding the characterization of the fracture networks, we distributed the fracture attributes in the geological grid according to parameters such as density of fractures, fracture aperture, fracture length, and fracture orientation, these parameters allowed to quantify the fracture porosity and permeability, thus highlighting regions with the best fracture permeability responses (AU) | |
| FAPESP's process: | 20/02130-2 - Geostatistical modeling for reservoir dominated by faults and fractures |
| Grantee: | Cristian Ricardo Mendoza Blanco |
| Support Opportunities: | Scholarships in Brazil - Master |