Next Generation Reservoir Simulation Using Russian Linear Solvers (Russian)

Beckner, B.L.; Usadi, Adam K.; Ray, M.B.; Diyankov, O.V.

doi:10.2118/103578-ru

Cited by 15 publications

(6 citation statements)

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“…To avoid accuracy issues concerning non-orthogonal grids (Wu and Parashkevov, 2009), the finite element method is used to perform the simulation and compute the fluxes (Hughes, 1987(Hughes, , 2000. An in-house iterative sparse matrix solver (Beckner et al, 2006) is used on the resulting linear equations. The mesh shown in Fig.…”

Section: Technologies Enabling the Workflowmentioning

confidence: 99%

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Huang

Burch²,

Brown

et al. 2010

All Days

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In this paper, we present a workflow that allows for accurate well and completion performance simulations to be conducted automatically. A number of innovative technologies are introduced to enable this workflow. First, a mesh generator was developed to automatically construct high quality, near-well meshes for wells with different deviation angles and variable producing segments. Second, the enriched finite element method, a new numerical technique, was used to provide detailed modeling of geological features (such as horizons, natural fractures, and no-flow boundaries) and completion characteristics (such as fractured completions and perforations) without having to manually construct a mesh that honors these complex geometries in detail. Third, a procedure was developed to fully couple the completion hydraulics and the near-well porous media flows.To demonstrate the effectiveness of the new technologies, three application examples will be detailed: (1) a sensitivity analysis of partial completion or stimulation on well performance; (2) an evaluation of the productivity of a new sand control device that uses MazeFlo TM screen technology and contains a multitude of segmented production zones; and (3) the design of a multiply-fractured completion. Throughout these examples, guidelines on maximizing the efficiency of completed segment, stimulated well length, or fractured completion are summarized.

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Section: Technologies Enabling the Workflowmentioning

confidence: 99%

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Huang

Burch²,

Brown

et al. 2010

All Days

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“…For a general description of EM power see (Beckner 2001, Beckner 2006. Based on our approach for optimal vertex/edge weighting in partitioning algorithms, we present experimental results from the simulation of actual field cases using ExxonMobil's next generation reservoir simulator, EM power .…”

Section: Introductionmentioning

confidence: 99%

Partitioners for Parallelizing Reservoir Simulations

Maliassov

Shuttleworth

2009

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Computer simulations of oil and gas reservoirs require the construction and solution of large, sparse linear systems with millions or even tens of millions of unknowns at each time step or Newton iteration. For efficiency, these tasks are often parallelized. While the parallel construction of the Jacobian matrix and right hand side vectors mainly depends on the load balance between the processors, the parallel solution of the resulting linear system is sensitive to the way the system is partitioned amongst processors during the solution process. We evaluate several different strategies to parallelize the solution of the linear system on both shared and distributed memory architectures, using a strategy to optimize both the load balance of processors and the convergence of the linear solver. We discuss partitioning strategies based on multi-level graph partitioning using an approach for optimal vertex/edge weighting for reservoir simulation models based on unstructured, 2½D finite volume spatial discretization. We present parallel scalability and timing results obtained from field studies, using ExxonMobil's proprietary reservoir simulator, EM power .

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“…ExxonMobil's EM power comprises a suite of applications including an object oriented database 1 , an unstructured gridding package, a GUI, a multi-platform simulation engine, and a variety of utilities to allow reservoir engineers to run the simulator on remote compute servers in both interactive and batch modes. A more complete overview of the simulator may be found elsewhere 2,3 . Fundamental to the initial design is the concept of using an unstructured grid to keep the model size relatively small and parallelization to improve the runtime of these models.…”

Section: Introductionmentioning

confidence: 99%

Parallelization on Unstructured Grids

Usadi¹,

Mishev²,

Shaw³

et al. 2007

Proceedings of SPE Reservoir Simulation Symposium

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fax 01-972-952-9435. AbstractWe describe experiences with parallelizing real models using an unstructured reservoir simulator on shared memory machines.Using ExxonMobil's proprietary reservoir simulator, EM powerTM , which contains an object oriented data hierarchy which describes a fully unstructured mesh, a fully integrated well and surface facility network, and a highly flexible, user specified well management capability, we will show how parallelization is performed at a high level through several variants of data partitioning adapted to the specific algorithmic needs.Property calculations, Jacobian construction, matrix solution methods, and well management may use a variety of different data structures, partitioning, and parallel execution schemes. We discuss mechanisms for addressing problems encountered.

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Next Generation Reservoir Simulation Using Russian Linear Solvers (Russian)

Cited by 15 publications

References 0 publications

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Innovative Technologies Enable Fast, Accurate, and Detailed Completion Evaluation and Well Performance Analysis

Partitioners for Parallelizing Reservoir Simulations

Parallelization on Unstructured Grids

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