TY - JOUR
T1 - Fast flow computation methods on unstructured tetrahedral meshes for rapid reservoir modelling
AU - Zhang, Zhao
AU - Geiger, Sebastian
AU - Rood, Margaret
AU - Jacquemyn, Carl
AU - Jackson, Matthew
AU - Hampson, Gary
AU - De Carvalho, Felipe Moura
AU - Silva, Clarissa Coda Marques Machado
AU - Silva, Julio Daniel Machado
AU - Sousa, Mario Costa
PY - 2020/4/1
Y1 - 2020/4/1
N2 - Subsurface reservoir models have a high degree of uncertainty regarding reservoir geometry and structure. A range of conceptual models should therefore be generated to explore how fluids-in-place, reservoir dynamics, and development decisions are affected by such uncertainty. The rapid reservoir modelling (RRM) workflow has been developed to prototype reservoir models across scales and test their dynamic behaviour. RRM complements existing workflows in that conceptual models can be prototyped, explored, compared, and ranked rapidly prior to detailed reservoir modelling. Reservoir geology is sketched in 2D with geological operators and translated in real-time into geologically correct 3D models. Flow diagnostics provide quantitative information for these reservoir model prototypes about their static and dynamic behaviours. A tracing algorithm is reviewed and implemented to compute time-of-flight and tracer concentrations efficiently on unstructured grids. Numerical well testing (NWT) is adopted in RRM to further interrogate the reservoir model. A new edge-based fast marching method is developed and implemented to solve the diffusive time-of-flight for approximating pressure transients efficiently on unstructured tetrahedral meshes. We demonstrate that an implementation of the workflow consisting of integrated sketch-based interface modelling, unstructured mesh generation, flow diagnostics, and numerical well testing is possible.
AB - Subsurface reservoir models have a high degree of uncertainty regarding reservoir geometry and structure. A range of conceptual models should therefore be generated to explore how fluids-in-place, reservoir dynamics, and development decisions are affected by such uncertainty. The rapid reservoir modelling (RRM) workflow has been developed to prototype reservoir models across scales and test their dynamic behaviour. RRM complements existing workflows in that conceptual models can be prototyped, explored, compared, and ranked rapidly prior to detailed reservoir modelling. Reservoir geology is sketched in 2D with geological operators and translated in real-time into geologically correct 3D models. Flow diagnostics provide quantitative information for these reservoir model prototypes about their static and dynamic behaviours. A tracing algorithm is reviewed and implemented to compute time-of-flight and tracer concentrations efficiently on unstructured grids. Numerical well testing (NWT) is adopted in RRM to further interrogate the reservoir model. A new edge-based fast marching method is developed and implemented to solve the diffusive time-of-flight for approximating pressure transients efficiently on unstructured tetrahedral meshes. We demonstrate that an implementation of the workflow consisting of integrated sketch-based interface modelling, unstructured mesh generation, flow diagnostics, and numerical well testing is possible.
KW - Flow diagnostics
KW - Numerical well testing
KW - Rapid reservoir modelling
KW - Unstructured tetrahedral mesh
UR - http://www.scopus.com/inward/record.url?scp=85068319221&partnerID=8YFLogxK
U2 - 10.1007/s10596-019-09851-6
DO - 10.1007/s10596-019-09851-6
M3 - Article
AN - SCOPUS:85068319221
SN - 1420-0597
VL - 24
SP - 641
EP - 661
JO - Computational Geosciences
JF - Computational Geosciences
IS - 2
ER -