Discretization and gridding in reservoir simulation 2. It is used to add detail where justified by data availability and to keep a coarse resolution where less data are available. The goal of performant reservoir simulation has to be balanced with the risk of using a model that is not representative of the geologic model. In reservoir simulations, nearwell regions usually require. Adaptive local grid refinement and multigrid in numerical reservoir. Pdf numerical simulation of the impact of polymer rheology. The local grid refinement lgr option allows enhanced grid definition in areas needing a higher level of simulation accuracy, such as near wells or in areas of complex geology. Reservoir simulation tasks gather and input the rock and fluids data reservoir description choose certain numerical features of the grid number of cells, cells. To this end, we consider a quarter fivespot with heterogeneity sampled from on layer of the spe10 data set. Basic applied reservoir simulation turgay ertekin george e. Computer methods in applied mechanics and engineering 1.
On the factors influencing the grid orientation effect in. Lgr stands for local grid refinement reservoir engineering. The grid in reservoir modeling module and gridding module are all created from the watertight structural framework, which enables the structure of the reservoir property model to be consistent with the structure of the numerical simulation grid, honoring to. The eclipse industryreference blackoil simulator offers the most complete and robust set of numerical solutions for fast and accurate prediction of dynamic behaviorfor all types of reservoirs and degrees of complexity, structure, geology, fluids, and development schemes. Adaptive local grid refinement and multigrid in numerical.
Modeling hydraulic fractures in finite difference simulators. Introduction in oilindustry it is common use to simulate the exploitation of an oil reservoir by means of some numerical method. This article applies local grid refinements lgr integrated with. Reservoir simulation is an area of reservoir engineering that, combining physics, mathematics, and computer programming to a reservoir model allows the analysis and the prediction of the fluid behavior in the reservoir over time. Reservoir simulation process reservoir simulation is briefly. Determination of fracture scale limit in numerical simulations of. The reservoir simulation chapter in the 1987 edition of the petroleum engineering handbook included a general description of reservoir simulation models, a discussion related to how and why they are used, choice of different types of models for different reservoir problems, and reliability of simulation results in the face of model assumptions.
Mathematical model computer codes numerical model physical model figure 1. In basin modelling, lgr has not yet been implemented. Spe rss aim clees ganzer 20061204 tc clean fraunhofer scai. Simulation of petroleum reservoir performance refers to the construction and operation of a model whose behavior assumes the appearance of actual reservoir behavior. Yu authored or coauthored more than 150 technical papers and holds five patents and two books shale gas and tight oil reservoir simulation and embedded discrete fracture modeling and application in reservoir simulation. Lgr is defined as local grid refinement reservoir engineering somewhat frequently. This chapter introduces the local grid refinement lgr and deals with. Therefore, the upscaling process is essentially an averaging procedure in which the static and dynamic characteristics of a finescale model are to be approximated by that of a coarsescale model. Flexible gridding has the potential of increasing the accuracy in numerical simulation of flow through hydrocarbon reservoirs within limitations in computing time. Principles of applied reservoir simulation, fourth edition, continues to provide the fundamentals on these topics for both early and seasoned career engineers and researchers. A grid refinement of the whole domain is very memory and cpu time consuming for fieldscale simulations. A schematic diagram of this process is shown in figure 1. Reservoir fluid characterisation supplementary scripts used at the montanuniversitat up to the retirement. There are 212 reservoir simulation engineer job openings.
A version of modflow, called modflowlgr for local grid refinement was developed mehl and hill, 2005 to support the use of locally refined grids to simulate groundwater flow. Embedded discrete fracture modeling and application in. The validation tests show that the approach presented is capable of providing accurate production predictions without the well structure limitation and with shorter simulation times as demanded by the application of a full fine grid refinement. Heinemann et al 1983 discuss dynamic grid refinement to improve the. Reservoir simulation course grid given difficulty of measuring rock properties, it is common to use geostatical methods to. Numerical simulation of the impact of polymer rheology on polymer injectivity using a multilevel local grid refinement method. Elseviers developments in petroleum science book series is designed to provide a comprehensive source of detailed information on all aspects of petroleum science the series covers the fields of petroleum geology, exploration, and engineering in its broadest possible sense. If local grid refinements are included in the model, they must be. Local grid refinement lgr is applied in reservoir simulation routinely for structured and unstructured grids and implemented in commercial simulators. Adaptive refinement of grid in this example, we show how to make grids that dynamically adapt to an advancing saturation front.
Jacobs koninklijkelshell exploratie en produktie laboratorium, rijswijk, the netherlands received may 9, 1986. Dynamic local grid refinement tu delft repositories. Vectorization and parallel processing of local grid refinement and adaptive implicit schemes in a general purpose reservoir simulator. Local grid refinement allows engineers to describe selected regions of the reservoir in extra detail. Siam journal on applied mathematics society for industrial. Local grid refinement is used to simulate flow in grid elements intersected by fractures. Parallel adaptive reservoir simulation sciencedirect. Fractured vuggy reservoir, numerical simulation, fracture, scale. Eclipse technical appendices or many books on the subject, but many.
Peng, a more flexible approach of dynamic local grid refinement for reservoir modeling, in. Reservoirsimulationmodel inputs are numerous, and uncertainty is pervasivebefore, during, and after development. Modeling hydraulic fractures in finite difference simulators using amalgam local grid refinement lgr impact of stressdependent matrix and fracture properties on shale gas production. Local grid refinement methods for implicit solvers.
Members of the books committee provide technical evaluation of the book. This paper describes a new and more flexible approach of dynamic local grid refinement, which can also be used to subdivide the grid block fixedly in any desired parts of reservoir. Petrel advanced gridding and upscaling schlumberger. In this paper, a uniform coarse grid and local refined grid are used. Algorithms free fulltext parallel reservoir simulation. Automatic grid setting may be modified for specific studies such as coning.
The unstructured voronoi numerical model is common to saphir, topaze and rubis, only the local grid refinement around the wells will be different. Local grid refinement, it is a widely used expression for the process of dividing one or several grids in the reservoir model into smaller sized grids allowing enhanced grid definition, which is useful for modeling wells or hydraulic fractures and other complex reservoir structures. Reservoir simulation is an area of reservoir engineering in which computer models are used to predict the flow of fluids typically, oil, water, and gas through porous media. Introduction to reservoir simulation montanuniversitat leoben. Natural fractured reservoir engineering phdg textbooks in preparation, intended to be issued during 2015.
Principles of applied reservoir simulation, fourth edition, delivers knowledge critical for todays basic and advanced reservoir and asset management. The amount of fundamental blocks and subblocks can be minimized by using a stepbystep scheme of subdivision almost without any restriction. He has published more than 15 technical papers in his research area. How is local grid refinement reservoir engineering abbreviated. The observed pressure and produced volumes of the two phases are matched with the simulated data to obtain. Reservoir modeling and simulation in todays highperformance. Mathematical structure of the blackoil model for petroleum. Kuliah ivgridding and well modelling in reservoir simulation. Grid coarsening may be used to amalgamate cells in regions of the reservoir which are less important to speed up simulation run times. Modern reservoir simulation faces increasingly complex physical models and.
Basic applied reservoir simulation by fmursa issuu. Flow simulation using local grid refinements to model laminated reservoirs. His research interest includes reservoir simulation, reservoir modeling, gridding, naturally and hydraulically fractured reservoirs, and unconventional resources. Glassdoor lets you search all open reservoir simulation engineer jobs. Nearwell local space and time refinement in reservoir simulation. Pdf flow simulation using local grid refinements to. Kuliah ivgridding and well modelling in reservoir simulation free download as powerpoint presentation. This volume presents a conventional numerical model to handle simple and complex fractures using local grid refinement lgr and unstructured gridding.
Development of dynamic local grid refinement in reservoir. Local grid refinement is a technique which aims to provide improved accuracy in subregions of a reservoir simulation study. This is frequently obtained in structured grids by local grid refinement, replacing a set of cells in the original grid by a finer grid fig. Journal of computational physics 77, 140165 1988 adaptive local grid refinement and multi grid in numerical reservoir simulation g. Radial refined grids are often used around wellbores to examine coning or other phenomena resulting from rapid variation in. This bestselling volume, written by experienced simulation users, was designed to help demystify the whats and whys of designing, editing, and analyzing reservoir simulations. It can be simply considered as the process of mimicking the behavior of fluid flow in a. Introduction webster defines simulate as to assume the appearance of without reality. In addition, unstructured gridding, local grid refinement. Get a full overview of developments in petroleum science book series. The inserted grid may be cartesian center or radial upper left. Discretization and gridding in reservoir simulation. Purchase embedded discrete fracture modeling and application in reservoir simulation, volume 68 1st edition. A common requirement in reservoir simulation is an increased level of detail around an item of interest such as a well.
He is an associate editor for spe journal and journal of petroleum science and engineering. Dynamic local grid refinement can be used to overcome this problem. Reservoir simulation is a key tool to get insight in complex fluid flow phenomena occurring in many petroleum reservoirs, creating the possibility to quantify fluid. Algebraic dynamic multilevel adm method for fully implicit. Upscaling is performed for each of the cells in the coarse grid and for each of the grid properties needed in the reservoir flow simulation model. Under the model in the broad scientific sense of the word, they understand a real or mentally created structure that reproduces or reflects the object being studied. Embedded discrete fracture modeling and application in reservoir simulation. Upscaling of grid properties in reservoir simulation petrowiki. On top of that, there is always pressure to deliver quality results as quickly as possible. Application of a local grid refinement protocol to analyze the performance of reservoir systems with complex well architectures a thesis in energy and mineral engineering by liwei hu 2011 liwei hu submitted in partial fulfillment of the requirements for the degree of master of science december 2011. The grid forms automatically and with the minimum number of cells for faster simulations. Search reservoir simulation engineer jobs with glassdoor. Parallel reservoir simulation, dynamical local grid refinement, geometrical domain decomposition, load balancing, local memory multiprocessor. A musthave handbook for anyone involved in reservoir simulation, reservoir simulation will help the reader decide when and how to use simulation for forecasting.
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