Reservoir Geomechanics
evaluating the geomechanical effects caused
by reservoir production
Coupling accurate Hydromechanical models with in-house GPU-based FEM program provide fast solutions for reservoir geomechanics even with highly refined mesh.
Suite Olympus
Our workflow for reservoir geomechanics analysis is named ” Olympus Suite ” and it is comprised of three software, Gaia , Hermes and Chronos. The workflow is a seamless and user-friendly process formed by 3 steps: i) the pre-processing step (to prepare the input file to run the coupled analysis, ii) the hydromechanical two way coupling analysis step = the coupling of a reservoir simulator and a finite elemnt program and iii) the post-processing step ( the visualization of the results such as displacement field).
GAIA
A C++ workflow plugin for GOCAD that covers the sequence of steps of the reservoir geomechanical analysis.
HERMES
A hydromechanical iterative two-way coupling program that links IMEX/CMG reservoir simulator and CHRONOS finite element program.
CHRONOS
A very fast parallel finite element program that has been developed and implemented to run on Nvidida GPUs (Graphics Processing Unit),
Compaction/Subsidence
Vertical displcament at seabed and on top of the reveservoir, that are the subsidence and compaction, respectively, are obtained from the reservoir geomechanical analysis.
Fault Reactivation
The reservoir production/injection process may bring about fault reactivation (may cause oil leakage to surface resulting in a serious environmental problem) that can be predicted by reservoir geomechanical analysis.
Material non-Linearity
Proper material behavior as plasticity and creep are implemented in CHRONOS in order to model the material non-linearity.
Integration With a Wellbore Analysis
The integration of a global reservoir geomechanical analysis and a local wellbore analysis by transferring the loading/deformation (resulting of the oil production) from global reservoir to local wellbore model.
HPC - High Performance Computing Based on GPUs
The reservoir geomechanical analysis is very time consuming on account of huge finite element meshes and the problems are solved over the time. Thus, we have been implementing the finite element program CHRONOS on NVIDIA GPUs in order to speed-up the analyses.
AI - Artificial Intelligence
We have been researching how to take advantage of the AI powerful capabilities in the geomechanical analyses.
Data Analysis
We have been appying Data Analysis in order to get a better understanding of the huge amount of results which are generated from a Geomechanical analyses.
Improvement of the Reservoir Simulation
The coupling of the stress analysis (CHRONOS) with a reservoir simulation improves the evaluation of the porous volume variation drive mechanism due to the reservoir compaction.
RBDO - Reliability Based Design Optimization
We have been researching how to achive an optimum design when considering uncertainty associated with geomechanical analyses using RBDO methodology.
Our Partners
Petrobras has been funding this researsh as a cooperative term with PUC-Rio since 2010.
Would you like to start a project with us?
Feel free to contact us for any details of ongoing projects or new researches. Our group would be happy to share our expertise and contribute to your project.