Integrated Seismic Interpretation, Petrophysics Study, Seismic Attribute Analysis, Complex Velocity Model Building and AVA Synthetic Modeling to predict Hydrocarbon Potential of Sinjhoro, Pakistan.

Abstract

The current study involves integrated seismic interpretation, rock physics and seismic attributes analysis of Sinjhoro area, with special emphasis on velocity processing and model building. The study area lies in the Southern Indus basin which is known for its huge hydrocarbon reserves. The integrated study involves; structural interpretation of seismic data seismic along with attributes analysis, time to depth conversion and generation of depth sections, synthetic seismograms, 1D Rock physics analysis including AVA modelling Horst and graben structures have been identified on the time sections which are more prominent on the depth sections created by using the velocity model. Seismic Velocity Model has been generated using spatio-temporal and horizon based interpolation algorithms. The results indicate that horizon based interpolation generates the best velocity model and therefore it is used in time to depth conversion and other analysis. Moreover, for the confirmation of the marked horizons and their behavior, seismic attribute analysis have been carried out which helps in understanding the lateral continuity, bedding sequences and thickness of desired beds. AVA Synthetic Modeling confirms the presence of Gas in the area