@article{Jackson:2015:10.2118/163633-PA,
author = {Jackson, MD and Percival, JR and Mostaghiml, P and Tollit, BS and Pavlidis, D and Pain, CC and Gomes, JLMA and El-Sheikh, AH and Salinas, P and Muggeridge, AH and Blunt, MJ},
doi = {10.2118/163633-PA},
journal = {SPE Reservoir Evaluation and Engineering},
pages = {115--132},
title = {Reservoir modeling for flow simulation by use of surfaces, adaptive unstructured meshes, and an overlapping-control-volume finite-element method},
url = {http://dx.doi.org/10.2118/163633-PA},
volume = {18},
year = {2015}
}

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TY  - JOUR
AB  - We present new approaches to reservoir modeling and flow simulation that dispose of the pillar-grid concept that has persisted since reservoir simulation began. This results in significant improvements to the representation of multiscale geologic heterogeneity and the prediction of flow through that heterogeneity. The research builds on more than 20 years of development of innovative numerical methods in geophysical fluid mechanics, refined and modified to deal with the unique challenges associated with reservoir simulation.Geologic heterogeneities, whether structural, stratigraphic, sedimentologic, or diagenetic in origin, are represented as discrete volumes bounded by surfaces, without reference to a predefined grid. Petrophysical properties are uniform within the geologically defined rock volumes, rather than within grid cells. The resulting model is discretized for flow simulation by use of an unstructured, tetrahedral mesh that honors the architecture of the surfaces. This approach allows heterogeneity over multiple length-scales to be explicitly captured by use of fewer cells than conventional corner-point or unstructured grids.Multiphase flow is simulated by use of a novel mixed finite-element formulation centered on a new family of tetrahedral element types, PN(DG)–PN+1, which has a discontinuous Nth-order polynomial representation for velocity and a continuous (order N +1) representation for pressure. This method exactly represents Darcy-force balances on unstructured meshes and thus accurately calculates pressure, velocity, and saturation fields throughout the domain. Computational costs are reduced through dynamic adaptive-mesh optimization and efficient parallelization. Within each rock volume, the mesh coarsens and refines to capture key flow processes during a simulation, and also preserves the surface-based representation of geologic heterogeneity. Computational effort is thus focused on regions of the model where it is most required.After valid
AU  - Jackson,MD
AU  - Percival,JR
AU  - Mostaghiml,P
AU  - Tollit,BS
AU  - Pavlidis,D
AU  - Pain,CC
AU  - Gomes,JLMA
AU  - El-Sheikh,AH
AU  - Salinas,P
AU  - Muggeridge,AH
AU  - Blunt,MJ
DO  - 10.2118/163633-PA
EP  - 132
PY  - 2015///
SN  - 1094-6470
SP  - 115
TI  - Reservoir modeling for flow simulation by use of surfaces, adaptive unstructured meshes, and an overlapping-control-volume finite-element method
T2  - SPE Reservoir Evaluation and Engineering
UR  - http://dx.doi.org/10.2118/163633-PA
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000356157200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://onepetro.org/REE/article-abstract/18/02/115/206344/Reservoir-Modeling-for-Flow-Simulation-by-Use-of?redirectedFrom=fulltext
VL  - 18
ER  - 

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