Evaluating Fault Compartmentalization by Integrating Geologic, Geophysical and Engineering Data: A Case Study from South America
Published:December 01, 2006
Rodrigo Bastidas Cortes, Daniel J. O’Meara, Roger M. Slatt, 2006. "Evaluating Fault Compartmentalization by Integrating Geologic, Geophysical and Engineering Data: A Case Study from South America", Reservoir Characterization: Integrating Technology and Business Practices, Roger M. Slatt, Norman c. Rosen, Michael Bowman, John Castagna, Timothy Good, Robert Loucks, Rebecca Latimer, Mark Scheihing, Hu Smith
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A set of seismic, well log, core, petrophysical, and well test data was integrated to construct a 3D geological model for reservoir characterization and later performance simulation. The model was initially built to address the unexpected performance of a single well. This well was designed as a water injector but produced sufficient oil to be deemed a producing well. The model explained the reason for this unexpected behavior—the reservoir was compartmentalized into fifteen fault blocks, many of which were not in mutual communication. Also, individual fault blocks were stratigraphically compartmentalized. The case for compartmentalization was built upon analysis of log-derived Leverett J-Functions and petrophysical and well data, all within the context of a 3D geological model constructed in GoCadTM.
This case study serves as an example of the value of integrating available data to develop a 3D geological model which can address short-term production issues, broader performance issues, and infill drilling opportunities, all of which may be affected by compartmentalization.