TY - JOUR
T1 - Petrophysical Characterization and Porosity-Permeability Log Calculation by Dual-Energy CT Scan
T2 - Morro do Chaves Formation, Sergipe-Alagoas Basin, Brazil
AU - Mendes, Marcelo
AU - Favoreto, Julia
AU - Nunes, Marcos
AU - Rigueti, Ariely
AU - Valle, Bruno
AU - Borghi, Leonardo
AU - Corbett, Patrick
AU - Lima, Maira
AU - Martins, Lorena
AU - Arena, Michele
N1 - Funding Information:
This study was carried out in association with the ongoing R&D Project, which was registered as ANP 20225–9, titled “PRESAL – Geological characterization of carbonate reservoirs from the Pre-Salt interval of Santos Basin, correlates and analogues” (UFRJ/Shell Brasil/ ANP), and sponsored by Shell Brasil. We thank the InterCement, Halliburton Service and the Schlumberger for the softwares and the facilities.R&D Project, which was registered as ANP 20225–9, titled “PRESAL – Geological characterization of carbonate reservoirs from the Pre-Salt interval of Santos Basin, correlates and analogues” Editor-in-chief.
Funding Information:
the ongoing R&D Project, which was registered as ANP 20225–9, titled “PRESAL – Geological characterization of carbonate reservoirs from the Pre-Salt interval of Santos Basin, correlates and analogues” (UFRJ/Shell Brasil/ ANP), and sponsored by Shell Brasil. We thank the InterCement, Halliburton Service and the Schlumberger for the softwares and the facilities.
Publisher Copyright:
© 2023, Universidade Federal do Rio de Janeiro. All rights reserved.
PY - 2023
Y1 - 2023
N2 - Considered important analogues of pre-salt reservoirs in hydrocarbon-producing basins throughout eastern Brazilian shore, the coquinas of the Morro do Chaves Formation (Barremian-Aptian of the Sergipe-Alagoas Basin) were studied in this work from a petrophysical standpoint using advanced characterization methods for cores recovered from four wells (2-SMC-01-AL, 2-SMC-02-AL, 2-SMC-03-AL e 2-SMC-01-AL) drilled in the Atoll Quarry, which is located in city of São Miguel dos Campos, Alagoas State, Brazil. To understand the relationships between lithological and diagenetic heterogeneities that control the distribution of permeability-porosity properties of this Rock Type, the cores underwent Dual-Energy X-ray imaging, which determines bulk density and photoelectric factor data to define seven Rock Types and generate effective porosity curves for the studied wells. Permeabilities in the wells were modeled based on the Flow Zone Index (FZI) concept, and each reservoir interval based on the Global Hydraulic Elements (GHEs) approach. Results were calibrated with laboratory measurements in plugs, and porosity was classified by petrographic analysis by Digital Image Analysis (DIA). All wells were correlated and four internal flooding surfaces identified, with a regressive surface (RS) dividing the Morro do Chaves Formation into an upper section with better reservoir characteristics and a lower one with worse ones.
AB - Considered important analogues of pre-salt reservoirs in hydrocarbon-producing basins throughout eastern Brazilian shore, the coquinas of the Morro do Chaves Formation (Barremian-Aptian of the Sergipe-Alagoas Basin) were studied in this work from a petrophysical standpoint using advanced characterization methods for cores recovered from four wells (2-SMC-01-AL, 2-SMC-02-AL, 2-SMC-03-AL e 2-SMC-01-AL) drilled in the Atoll Quarry, which is located in city of São Miguel dos Campos, Alagoas State, Brazil. To understand the relationships between lithological and diagenetic heterogeneities that control the distribution of permeability-porosity properties of this Rock Type, the cores underwent Dual-Energy X-ray imaging, which determines bulk density and photoelectric factor data to define seven Rock Types and generate effective porosity curves for the studied wells. Permeabilities in the wells were modeled based on the Flow Zone Index (FZI) concept, and each reservoir interval based on the Global Hydraulic Elements (GHEs) approach. Results were calibrated with laboratory measurements in plugs, and porosity was classified by petrographic analysis by Digital Image Analysis (DIA). All wells were correlated and four internal flooding surfaces identified, with a regressive surface (RS) dividing the Morro do Chaves Formation into an upper section with better reservoir characteristics and a lower one with worse ones.
KW - Coquina
KW - Rock types
KW - Tomography
UR - http://www.scopus.com/inward/record.url?scp=85145919789&partnerID=8YFLogxK
U2 - 10.11137/1982-3908_2023_46_47353
DO - 10.11137/1982-3908_2023_46_47353
M3 - Article
AN - SCOPUS:85145919789
SN - 0101-9759
VL - 46
JO - Anuário do Instituto de Geociências
JF - Anuário do Instituto de Geociências
M1 - 47353
ER -