Geophysical Characterization of Carbonates Reservoir Using Advanced Interpretation Techniques: Applications to Abenaki Formation, Penobscot Block, Nova Scotia
Due to the finite nature of hydrocarbons, it is more complicated and expensive to find them. Because of this, nconventional reservoirs have become an important source of hydrocarbon production, such as Shale Gas, Oil Shale and Carbonates. In this context, carbonates reservoir could represent new opportunities, however, there is still lack of their understanding. Therefore, it is vital to integrate and apply new technologies and knowledge to reduce the risk during the exploration phase. Now, by integrating rock physics, seismic data and regional geology as an industry geoscientists aim to characterize reservoirs in a more realistic and integrated way (Avseth et al, 2005). The AVO technique was developed to analyze pre-stack seismic data to characterize reservoirs and evaluate anomalies related to hydrocarbons accumulations (Rutherford and Williams, 1989). It is based on how the seismic amplitude varies with offset which effect is linked to the rock mechanic-elastic properties. These changes in the reflectivity are the result of the contrasts between the P-wave and S-wave velocities and the density. Through its application it is possible to generate properties models as Poisson's moduli, Bulk moduli, and so on, which also control the seismic response. Using the seismic inversion, it is possible to turn the seismic amplitude into rock properties with the goal of obtaining a 3D model of the subsurface which is going to be calibrated with the seismic and well data available. This will allow to reduce the uncertainty in the areas where there is no well data (Gharaee, 2013). The main objective of this study is to characterize carbonates reservoirs within the Abenaki formation by integrating rock physics and seismic data.
AAPG Datapages/Search and Discovery Article #90291 ©2017 AAPG Annual Convention and Exhibition, Houston, Texas, April 2-5, 2017