Data Assimilation for a Geological Process Model Using the Ensemble Kalman Filter
We consider the problem of conditioning a geological process-based computer simulation, which produces basin models by simulating transport and deposition of sediments, to data. Emphasising uncertainty quantification, we frame this as a Bayesian inverse problem, and propose to characterize the poste...
| Main Authors: | , |
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| Format: | Report |
| Language: | unknown |
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arXiv
2017
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.48550/arxiv.1711.07763 https://arxiv.org/abs/1711.07763 |
| Summary: | We consider the problem of conditioning a geological process-based computer simulation, which produces basin models by simulating transport and deposition of sediments, to data. Emphasising uncertainty quantification, we frame this as a Bayesian inverse problem, and propose to characterize the posterior probability distribution of the geological quantities of interest by using a variant of the ensemble Kalman filter, an estimation method which linearly and sequentially conditions realisations of the system state to data. A test case involving synthetic data is used to assess the performance of the proposed estimation method, and to compare it with similar approaches. We further apply the method to a more realistic test case, involving real well data from the Colville foreland basin, North Slope, Alaska. : 34 pages, 10 figures, 4 tables |
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