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Accelerating the convergence of coupled geomechanical‐reservoir simulations
Author(s) -
Jeannin L.,
Mainguy M.,
Masson R.,
VidalGilbert S.
Publication year - 2006
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.576
Subject(s) - geomechanics , geology , compaction , robustness (evolution) , convergence (economics) , reservoir engineering , petroleum engineering , reservoir simulation , coupling (piping) , petroleum reservoir , stress field , geotechnical engineering , mathematical optimization , petroleum , mathematics , finite element method , engineering , mechanical engineering , paleontology , biochemistry , structural engineering , economic growth , economics , gene , chemistry
Abstract The pressure variations during the production of petroleum reservoir induce stress changes in and around the reservoir. Such changes of the stress state can induce marked deformation of geological structures for stress sensitive reservoirs as chalk or unconsolidated sand reservoirs. The compaction of those reservoirs during depletion affects the pressure field and so the reservoir productivity. Therefore, the evaluation of the geomechanical effects requires to solve in a coupling way the geomechanical problem and the reservoir multiphase fluid flow problem. In this paper, we formulate the coupled geomechanical‐reservoir problem as a non‐linear fixed point problem and improve the resolution of the coupling problem by comparing in terms of robustness and convergence different algorithms. We study two accelerated algorithms which are much more robust and faster than the conventional staggered algorithm and we conclude that they should be used for the iterative resolution of coupled reservoir‐geomechanical problem. Copyright © 2006 John Wiley & Sons, Ltd.