Efficient Multiscale Reservoir Characterisation and Effective Property Estimation using Sketch-Based Modelling and Flow Diagnostics
Shakhawat Hossain (Imperial College London)
Carl Jacquemyn (Imperial College London)
D. Petrovskyy (Imperial College London)
Gary J. Hampson (Imperial College London)
Matthew D. Jackson (Imperial College London)
S. Geiger (TU Delft - Geoscience and Engineering)
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Abstract
We describe an efficient and novel method to characterise multiscale geological heterogeneity and its effects on fluid flow using an open-source, sketch-based modelling and flow diagnostics tool (Rapid Reservoir Modelling. RRM). The method has three aims: (1) to generate a nested hierarchy of geologically accurate models of sedimentological heterogeneity at different scales; (2) to determine the representative elementary volume (REV) for each heterogeneity style, in order to calculate effective properties for larger scale models; and (3) to evaluate the impact of sedimentological heterogeneity on fluid flow and trapping in the hierarchy of geological models. The sketch-based modelling approach enables the construction of multiple geometrically accurate geological models and allows us to analyse them quickly using flow diagnostics and simulation tools. We illustrate this approach using examples from Triassic fluvial sandstones of the UK (Bunter Sandstone and Sherwood Sandstone), which host groundwater and geothermal resources and are targets for carbon capture and storage (CCS).