Vectorization and Parallel Processing of Local Grid Refinement and Adaptive Implicit Schemes in a General Purpose Reservoir Simulator

Chien, M.C.H.; Northrup, E.J.

doi:10.2118/25258-ms

Cited by 13 publications

(4 citation statements)

References 14 publications

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“…8 in which the unmatched grid lines are extended to create "pseudo cells" along the fault plane. 20,21,22 Once the piecewise constant approximations for pressure and physical properties are used for these pseudo cells, transmissibility can be straightforwardly computed from the flux continuous finite volume method. 6,8 In Fig.…”

Section: Nonmatching Gridsmentioning

confidence: 99%

“…Unmatched grid lines in LGR can incur numerical inaccuracy and instability. 23,24 Here, we employ a simple approach 20,21,22 which is compatible with the original derivation of the flux continuous finite difference scheme, though it does not fully account for the geometrical error that can result where an LGR block meets a coarse block. We again create pseudo cells in the coarse blocks that are adjacent to the LGR block.…”

Section: Consider the Cross-section Shown Inmentioning

confidence: 99%

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New Developments in Multiblock Reservoir Simulation: Black Oil Modeling, Nonmatching Subdomains and Near-Well Upscaling

Lee¹,

Wolfsteiner²,

Durlofsky³

et al. 2003

Proceedings of SPE Reservoir Simulation Symposium

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In multiblock reservoir simulation techniques, the reservoir model is divided into a number of subdomains or blocks. In our current implementation, these blocks are locally structured but globally unstructured. This representation enables the modeling of geometrically complex reservoir features such as fault surfaces and nonconventional wells while avoiding many of the complications of fully unstructured formulations. In this paper, we present several important developments within this framework. These include the extension of a previous two phase flow finite volume formulation to the general black oil case, the implementation of techniques for treating systems in which grid lines do not match between adjacent subdomains, and the application of a near-well radial upscaling technique to the multiblock paradigm. Simulation results illustrating the accuracy and efficiency of these new capabilities are presented. These include a black oil simulation for a local well study, flow through a realistic reservoir with several wells and faults, flow through a fault surface represented by nonmatching grid lines, and a two phase flow simulation demonstrating the applicability of the near-well upscaling procedure to multiblock models. With the new developments presented in this paper, the finite volume based multiblock simulator can be applied to a variety of problems of practical interest. TX 75083-3836, U.S.A., fax 01-972-952-9435.

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Section: Nonmatching Gridsmentioning

confidence: 99%

Section: Consider the Cross-section Shown Inmentioning

confidence: 99%

New Developments in Multiblock Reservoir Simulation: Black Oil Modeling, Nonmatching Subdomains and Near-Well Upscaling

Lee¹,

Wolfsteiner²,

Durlofsky³

et al. 2003

Proceedings of SPE Reservoir Simulation Symposium

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“…Chien and Northrup [16] presented an adaptive implicit method that allowed for static mixed implicit regions within a dynamic local grid refinement context.…”

Section: Adaptive Implicit Flow Modelingmentioning

confidence: 99%

A Preconditioned Adaptive Implicit Method for Reservoirs with Surface Facilities

Byer¹,

Edwards²,

Khalid³

1999

Proceedings of SPE Reservoir Simulation Symposium

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractFully implicit coupling of surface facilities with a reservoir model can lead to a significant increase in computing time. The focus of this paper is on methods designed to reduce the computational effort. An adaptive implicit method is coupled with a novel preconditioning method to produce an optimal strategy for fully coupled surface facility reservoir simulation.

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“…There has been considerable effort in developing and applying parallel computing techniques in reservoir simulation since 1980s (Chien and Northrup 1993;Chien et al 1997;Killough and Bhogeswara 1991;Killough et al 1997;Li et al 1995;Parashar et al 1997;Rame and Delshad 1995;Rutledge et al 1992;Scott et al 1987;Shiralkar et al 1997;Wheeler and Smith 1990). Black oil model (Rutledge et al 1992;Wheeler and Smith 1990), compositional model (Chien et al 1997;Dogru et al 2002;Killough and Bhogeswara 1991), chemical flooding model (Rame and Delshad 1995) and dual porosity dual permeability model (Al-Shaalan et al 2003) has been numerically solved using different paradigms of parallel simulation, including shared memory, distributed memory, and GPGPUs (Dogru et al 2013) with structured grids and unstructured grids (Fung and Dogru 2008b).…”

Section: Introductionmentioning

confidence: 99%

On Robust and Efficient Parallel Reservoir Simulation on Tianhe-2

Guan¹,

Qiao

Zhang

et al. 2015

Day 3 Wed, September 16, 2015

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Parallel reservoir simulators are now widely used with availability of super computers. Modern massively parallel supercomputers demonstrate great power for simulating large-scale reservoir models. However, improving scalability and efficiency for fully implicit methods on emerging parallel architectures is still challenging. In this paper, we present a robust discretization together with a parallel linear solver algorithm; and we explore the parallel implementation on the world's fastest supercomputer Tianhe-2.Starting with a general compositional model, we focus on the black oil model and developed Parallel eXtension Framework for parallelizing the serial simulator. A parallel preconditioner based on fast auxiliary space preconditioning (FASP) is applied to solve the Jacobian system arising from the fully implicit discretization. The parallel simulator was validated using large-scale black oil benchmark problems, for which parallel scalabilities were tested. Giant reservoir models with over 100 million grid blocks have been simulated within a few minutes, and test the strong scalability of AMG solver with 1 billion unknown. We also demonstrate the parallelization and acceleration using Intel Xeon Phi coprocessors. In the end, the efficiency of the parallel simulator is illustrated by a giant reservoir using up to 10,000 cores, for which the CPU and communication time are summarized for the linear and nonlinear algorithms.

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Vectorization and Parallel Processing of Local Grid Refinement and Adaptive Implicit Schemes in a General Purpose Reservoir Simulator

Cited by 13 publications

References 14 publications

New Developments in Multiblock Reservoir Simulation: Black Oil Modeling, Nonmatching Subdomains and Near-Well Upscaling

New Developments in Multiblock Reservoir Simulation: Black Oil Modeling, Nonmatching Subdomains and Near-Well Upscaling

A Preconditioned Adaptive Implicit Method for Reservoirs with Surface Facilities

On Robust and Efficient Parallel Reservoir Simulation on Tianhe-2

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