SPWLA 63rd Annual Symposium Transactions 2022
DOI: 10.30632/spwla-2022-0112
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Sequential Multi-Realization Probabilistic Interpretation of Well Logs and Geological Prediction by a Deep-Learning Method

Abstract: The majority of geosteering operations rely on traditional shallow sensing logging tools as sources of information. Many such operations rely on stratigraphic-based steering when the logs from the drilled well are matched to logs from an offset well by modifying the lateral shape of stratigraphy. The match of the logs indicates a plausible interpretation, but due to the scarcity of log data in many situations, this interpretation is not unique. In manual workflows maintaining several likely interpretations is … Show more

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“…When trained on noisy data, the presented methodology can handle realistic log‐noise levels. Thus the model's sequential version (Alyaev et al., 2022) can be directly used for automatic interpretation during traditional shallow‐log‐based geosteering with fixed‐thickness stratigraphy and possible faults. We expect the approach to naturally extend to other geological discontinuities such as pinch‐outs if retrained on a representative dataset.…”
Section: Discussionmentioning
confidence: 99%
“…When trained on noisy data, the presented methodology can handle realistic log‐noise levels. Thus the model's sequential version (Alyaev et al., 2022) can be directly used for automatic interpretation during traditional shallow‐log‐based geosteering with fixed‐thickness stratigraphy and possible faults. We expect the approach to naturally extend to other geological discontinuities such as pinch‐outs if retrained on a representative dataset.…”
Section: Discussionmentioning
confidence: 99%