USING ELASTIC PARAMETER ANOMALIES AND SEISMIC INVERSION OF POSEIDON 3D SEISMIC DATA TO INDICATE HYDROCARBON RESERVOIR SANDS IN MONTARA FORMATION OF BROWSE BASIN

• Main Author: Ammarsyah Putra, Hilmi
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/61829
• Institution: Institut Teknologi Bandung

The better understanding of science and technology opens new ways to understand and overcome engineering challenges in hydrocarbon exploration. Using readily available data and approaching them with new concepts could open the path to new ideas, which could even lead to new discoveries. In this research, the Poseidon 3D open data was processed with Extended Elastic Impedance Inversion to try characterizing the reservoir in the Montara Formation using its elastic parameters. The analysis of Pharos and Proteus well logs shows that the LambdaRho and Vp/Vs elastic parameters are sensitive to fluid and sand-shale lithology respectively for delineating reservoir rocks in the Montara Formation in this field. Inversion of EEI for these elastic parameters using the Linear Programming Sparse Spike Inversion method was done to create the Relative Impedance volumes. These were then interpreted to delineate the reservoir by identifying anomalies that could indicate the hydrocarbon reservoir. Two main anomalies were identified, one of which is associated with the hydrocarbon indications in the well Pharos and Proteus. The other anomaly in the South East of Kronos well is supported with signs of trapping by a 3- way-dip closure with a combined structural-stratigraphic play and faults that could act as a conduit for hydrocarbon pathway from the producing J20 (Plover) formation.