TY - GEN
T1 - CHARACTERIZATION OF FRACTURED CARBONATE RESERVOIRS
T2 - 82nd EAGE Conference and Exhibition 2021
AU - Abdallah, I.
AU - Patruno, S.
AU - Sarris, E.
AU - Scisciani, V.
AU - Colantonio, F.
N1 - Funding Information:
The authors are grateful to Cyprus Geological Survey Department and particularly to Dr. Efthymios Tsiolakis and Dr. Vasilis Symeou for the support in the course of this work. Thanks to Joel Corcoran (Goel EP Ltd) for helping to fund the UAV campaign and for stimulating discussions.
Publisher Copyright:
© (2021) by the European Association of Geoscientists & Engineers (EAGE)All rights reserved.
PY - 2021
Y1 - 2021
N2 - A well-exposed Miocene carbonate reef outcrop is here analyzed with respect to its physical and stratigraphic properties and the impact of fracture networks on reservoir properties. Results from this study is expected to serve as an analogue to better characterize the eastern Mediterranean subsurface carbonate reservoirs. A total of 113 high-resolution images were collected using unmanned aerial vehicles (drones) and utilized for 'structure from motion' (SfM) digital photogrammetry. Nadiral orthomosaic models were loaded in GIS to geo-trace visible fractures and characterize fracture attributes such as orientation, fracture length, intensity and density. Fieldwork analyses distinguished the following main facies in the outcrop: main reef, inter-reef, and fore-reef. Additional fracture attributes were measured from the field (e.g., aperture) and 10 rock samples were gathered to undergo routine laboratory-based core analysis, suggesting maximum porosity of 15% but negligible permeability at sample scale. Results from both SfM photogrammetry and fieldwork analyses indicate a dominant fracture set striking NW-SE, parallel to the main inferred fault orientations. The highest fracture density (≤0.52 m/m2) is achieved for fore-reef facies. Our analyses suggest that outstanding permeability is mainly focused along large open fracture sets and meteoric dissolution-enhanced fracture sets in the field, with likely anisotropic flow properties.
AB - A well-exposed Miocene carbonate reef outcrop is here analyzed with respect to its physical and stratigraphic properties and the impact of fracture networks on reservoir properties. Results from this study is expected to serve as an analogue to better characterize the eastern Mediterranean subsurface carbonate reservoirs. A total of 113 high-resolution images were collected using unmanned aerial vehicles (drones) and utilized for 'structure from motion' (SfM) digital photogrammetry. Nadiral orthomosaic models were loaded in GIS to geo-trace visible fractures and characterize fracture attributes such as orientation, fracture length, intensity and density. Fieldwork analyses distinguished the following main facies in the outcrop: main reef, inter-reef, and fore-reef. Additional fracture attributes were measured from the field (e.g., aperture) and 10 rock samples were gathered to undergo routine laboratory-based core analysis, suggesting maximum porosity of 15% but negligible permeability at sample scale. Results from both SfM photogrammetry and fieldwork analyses indicate a dominant fracture set striking NW-SE, parallel to the main inferred fault orientations. The highest fracture density (≤0.52 m/m2) is achieved for fore-reef facies. Our analyses suggest that outstanding permeability is mainly focused along large open fracture sets and meteoric dissolution-enhanced fracture sets in the field, with likely anisotropic flow properties.
UR - http://www.scopus.com/inward/record.url?scp=85127920629&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85127920629
T3 - 82nd EAGE Conference and Exhibition 2021
SP - 5428
EP - 5432
BT - 82nd EAGE Conference and Exhibition 2021
PB - European Association of Geoscientists and Engineers, EAGE
Y2 - 18 October 2021 through 21 October 2021
ER -