Parallel Framework for Complex Reservoir Simulation with AdvancedDiscretization and Linearization Schemes

Longlong Li, Mark Khait, Denis Voskov, Ahmad Abushaikha

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

4 Citations (Scopus)
2 Downloads (Pure)

Abstract

The continuous progress of reservoir monitoring technology provides encouraging capacities to reduceuncertainties in the subsurface characterization and to mitigate risks in field development applying thereservoir simulation approach. However, it is always challenging to take full advantage of the observationdata, since an accurate representation of strong heterogeneities requires a high-resolution grid. Most ofthe discretization methods cannot handle full tensor permeability, and high nonlinearity introduced bycomplex physical process drastically reduces simulation efficiency. In this work, we develop an advancedparallel framework for reservoir simulation with the implementation of state of the art discretizationand linearization methods. We apply the multipoint flux approximation (MPFA) method to handle thefull tensor permeability in unstructured grids. To keep the fidelity of the geological model and improvecomputational efficiency, we use massively parallel computations via Message Passing Interface (MPI).Complex subsurface physics is described by mass-based formulations making the framework flexible forgeneral-purpose reservoir simulation. However, the representation of phase behavior introduces additionalworkload when compared with the phase-based formulations in the traditional approach. Here, we apply theOperator-Based Linearization (OBL) approach which not only overcomes this drawback but also turns it toan advantage. In this method, the conservation equations are described in an operator form. By constructinga library of tabulated operators, the repeated work spent on complex phase behavior and property evaluationcan be significantly reduced. We benchmark the parallel framework with analytical solutions under single-phase flow and multiphase flow. The results demonstrate that the parallel framework provides accuratesimulation results for structured and unstructured grids. We validate that MPFA implemented in our parallelframework converges to real solutions when the permeability is a full tensor. Besides, several realisticcases have been rigorously tested confirming high computational capacity, efficiency, and accuracy of theadvanced massively parallel framework for general-purpose reservoir simulation. With the implementationof MPFA and OBL approaches, the parallel framework is fully equipped for the simulation of problemswith full tensor permeability, high-heterogeneities, and complex physical processes.

Original languageEnglish
Title of host publicationSPE Europec Featured at 82nd EAGE Conference and Exhibition
Subtitle of host publication8-11 December, Amsterdam, The Netherlands
PublisherSociety of Petroleum Engineers
Pages1-14
Number of pages14
ISBN (Electronic)9781613997123
DOIs
Publication statusPublished - 2020
EventSPE Europec Featured at 82nd EAGE Conference and Exhibition - Online due to COVID-19, Amsterdam, Netherlands
Duration: 8 Dec 202011 Dec 2020

Publication series

NameSociety of Petroleum Engineers - SPE Europec Featured at 82nd EAGE Conference and Exhibition

Conference

ConferenceSPE Europec Featured at 82nd EAGE Conference and Exhibition
CountryNetherlands
CityAmsterdam
Period8/12/2011/12/20

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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