Method, system and apparatus for real-time reservoir model updating using ensemble kalman filter
US7584081B2 · kind B2 · utility
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Key dates
| Filing date | Nov 21, 2005 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | May 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method, system and apparatus for real-time reservoir model updating using ensemble Kalman filters is described. The method includes a conforming step for bring bringing static and dynamic state variables into conformance with one another during a time step of the updating. Also, an iterative damping method is used in conjunction with the conformance step to account for nonGaussian and nonlinear features in a system. Also, a re-sampling method is described which reduces the ensemble size of reservoir models which are to be updated.
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