Detailed fault and fracture characterization with the latest seismic attributes techniques
I.I. Gonzalez Gonzalez (TU Delft - Civil Engineering & Geosciences)
G. Bertotti – Mentor
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Abstract
A seismic survey acquired by the petroleum company Wintershall has been used for this study in order to characterize the fault and fractures present in the area using the latest seismic attribute techniques. With the use of the software OpendTect from dGB Earth Sciences and a methodology developed by (Jaglan Hardeep, 2016) and (Qayyum F, 2015) is used in order to apply the latest seismic attributes to enhance the detailed characterization of fault and fractures from a seismic survey acquired by the petroleum company Wintershall over the F10 block in the Dutch North Sea, offshore The Netherlands.
The methodology to enhance faults and fracture is divided in three phases based on their objective. The first section of the methodology focuses on conditioning the data, to generate a volume that honors the dip and azimuth of the overall geological structures. This volume is defined as the Steering cube and is the framework for the application of the latest seismic attributes. The second phase is the application of the seismic attributes to enhance the faults and fractures encountered in the targeted horizons belonging to the lithostratigraphic groups. The third and last section is to manually interpret the faults and fractures to obtain length scales and orientation of the geologic structures characterized. Allowing to obtain fault and fracture network characteristics in terms of frequency, orientation and length scale. Finally, this study aims to provide recommendations on how seismic attributes can provide indications of sub seismic fractures.