System and method for performing reservoir simulation using preconditioning
US8903694B2 · kind B2 · utility
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Inventors
Key dates
| Filing date | Feb 24, 2012 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Feb 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2111/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented system, method, and software are provided for solving linear systems of equations arising in reservoir simulation. A linear system of fluid flow equations, including a plurality of unknown variables, is provided that represents fluid flow properties in a geological formation of a subterranean reservoir. Block diagonal scaling is applied to the linear system of fluid flow equations. Threshold incomplete lower-upper approximate factorization is applied to obtain a preconditioning matrix, which can be used to iteratively solve unknown variables associated with the system of fluid flow equations. Preconditioning can be used directly as part of a preconditioned Krylov subspace method or alternatively as a 2nd stage preconditioner in a CPR algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.