| US 7,603,265 B2 | ||
| Method of constructing a geomechanical model of an underground zone intended to be coupled with a reservoir model | ||
| Marc Mainguy, Nanterré (France); Pascal Longuemare, Saint-Germain-en-Laye (France); Patrick Lemonnier, Paris (France); and Florent Chalon, Chinon (France) | ||
| Assigned to Institut Francais du Petrole, Rueil Malmaison Cedex (France) | ||
| Filed on Apr. 13, 2005, as Appl. No. 11/104,442. | ||
| Claims priority of application No. 04 03889 (FR), filed on Apr. 14, 2004. | ||
| Prior Publication US 2005/0234690 A1, Oct. 20, 2005 | ||
| Int. Cl. G06F 9/455 (2006.01) | ||
| U.S. Cl. 703—10 [703/2; 702/13] | 4 Claims |
| 1. A method of simulating geomechanical behavior of an underground reservoir by coupling with a reservoir model for simulation
of fluid flows in the reservoir a geomechanical model that can simulate the geomechanical behavior, comprising:
acquiring data from the reservoir regarding geometry, lithofacies and petrophysical properties related to the reservoir wherein
each lithofacies comprises a rock type;
constructing, using a computer, a geological model of the reservoir discretized by a fine grid utilizing the data;
constructing, using a computer, a reservoir model of multiphase flow by scaling the geological model wherein the reservoir
model has cells larger than the cells of the geological model;
acquiring geomechanical properties related to the reservoir and assigning the geomechanical properties to the cells of the
geological model;
constructing, using a computer, the geomechanical model of the reservoir discretized by a geomechanical grid wherein the geomechanical
model has cells of same size or larger than the cells of the reservoir model;
performing, using a computer, a scaling method for calculating the geomechanical properties of the geomechanical cells of
the geomechanical model, from the geomechanical properties of the geological cells;
performing, using a computer, a homogenization method to calculate the geomechanical properties at a scale of the geomechanical
cells assuming that the geomechanical cells have a stratified structure, wherein each lithofacies contained in each geomechanical
cell has a stratified distribution therein;
performing, using a computer, reservoir simulation using the reservoir model and determining multiphase flow characteristics
and related petrophysical properties of the cells in the reservoir model;
performing, using a computer, simulation of geomechanical behavior using the geomechanical model and determining the geomechanical
properties of the cells of the geomechanical model having a stratified structure; and
using the results of simulation with the geomechanical model to modify the petrophysical properties of the reservoir model.
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