Proceedings of the 10th spe symposium on reservoir simulation society of petroleum engineers, dallas, 1989 pp. Jun 28, 2010 eclipse blackoil reservoir simulation software is a fully implicit, threephase, 3d, generalpurpose black oil simulator that includes several advanced and unique features. Mathematical techniques in oil recovery cbmsnsf regional conference series in applied mathematics chen, zhangxin on. Introduction to reservoir simulation analytical and. Variety of grid geometry options such as corner point, conventional blockcenter, and radial. Structured grid simulation remains the predominant practice in reservoir simulation. In geometry, a cornerpoint grid is a tessellation of a euclidean 3d volume where the base cell. Basic concept of a reservoir simulator impes models 217. To this end, new automated procedures are established.
A simple geometry of a threestage hydrogen compression system is shown in figure 1a and the geometry used in the simulation is presented in figure 1b. This book hopes to remedy the situation by means of its synthesized presentation of the models used in reservoir simulation, in a form understandable to both mathematicians and engineers. Imex models primary and secondary oil recovery processes in conventional and unconventional reservoirs. In this paper, we introduce a new method to generate a hybrid mesh from a cpg corner point geometry reservoir grid and a radial mesh around a well. Hybrid mesh generation for reservoir flow simulation in cpg grids 417 where p is the pressure. Different from cartesian grids, the locations of corner points for each block are defined using coordinate lines and depths wadsley, 1980. It provides a recap of some of the basic concepts in reservoir engineering required to perform reservoir fluid flow calculations, and gives examples of the types of calculation that may be performed, and when these are required.
Complex reservoir model constructed using corner point geometry issues in chossing a reservoir simulation grid i. Development of a 2d blackoil reservoir simulator using a unique gridblock system. Unfortunately, reservoir simulation technology has not kept pace with. Book examples the matlab reservoir simulation toolbox. Eclipse core simulator schlumberger you will realize, it will be the only online course that teaches pratical re and reservoir simulation skills, with software tools petrel and eclipse, i details.
A schematic diagram of this process is shown in figure 1. Matlab reservoir simulation toolbox mrst mrst is an opensource toolbox that is mainly intended for rapid prototyping and demonstration of new simulation methods and modeling concepts in. The method is an extension of the approach proposed in 1 to the case of cpg. The flexible cell geometry of the cornerpoint format introduces additional difficulties. Assess corner point gridding and volume based modeling to test suitability for dynamic modeling and uncertainty. Tpg4160 reservoir simulation 2017 lecture note 4 norwegian university of science and technology professor jon kleppe department of petroleum engineering and applied geophysics 12. Reservoir modeling and characterization slideshare. Reservoir simulation is a widely used method by oil and gas companies to expand and develop new methods, recovery projects and locations of infill wells. Pdf development of a 2d blackoil reservoir simulator. Zhang z, geiger s, rood m, jacquemyn c, jackson md, hampson gj et al. The intersect highresolution reservoir simulator solves the most challenging reservoir modeling jobs with fast and robust field development planning. 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. The complexity results either from reservoir characterization e. A method for generating volumetric fault zone grids for pillar gridded.
Reservoir simulation tool is an amazing product of an integrated effort of geosciences, reservoir and production engineering, petrophysics, computer science and economics. Corner point is widely used in reservoir simulation due to its flexibility to represent geological features, such as faults, and complex boundaries of hydrocarbon reservoirs. The use of the fd method for nonorthogonal corner point geometry grids may. The method is compatible with existing reservoir modeling and simulation tools. Hybrid mesh generation for reservoir flow simulation in cpg. Flowsim studio can handle both single and dual porosity reservoirs. A cpg is typically coarser than an smg by one to two orders of magnitude. Quantify the uncertainty in the field to estimate upside potential for the field. Review can load results from multiple runs for comparison, and has the same lookandfeel as rexcel. Corner point geometry reservoir grid and a radial mesh around a well. Ecmor i 1st european conference on the mathematics of oil recovery session.
Complex geometries in reservoir simulation studies use cartesian or corner point structured grids. It enables operators to simulate detailed geological features and quantify uncertainties by creating accurate production scenarios. The grid for the reservoir model was identical to the grid used for the finite element mesh. Reservoir simulation basics idea page of a petroleum engineer. A reservoir simulation grid has a lower resolution, covering a single layer per geological formation. In this study, we propose a 3d unstructured grid, the generalized prism grid gpg, to model reservoirs with complicated geological geometries, including horizons, pinchouts, faults, fractures, and bore holes. Knutandreas lie an introduction to reservoir simulation using matlab user guide for the matlab reservoir simulation. User guide for the matlab reservoir simulation toolbox mrst. Nielsen book data summary beginning with an overview of classical reservoir engineering and basic reservoir simulation methods, this book then progresses through a discussion of types of flows singlephase, twophase, black oil threephase, single phase with multicomponents, compositional, and thermal. The purpose of this example is to demonstrate how the twopoint flow solver can be applied to compute flow on a real grid model that has degenerate cell geometries and nonneighbouring connections arising from a number of faults, and. Grid generation is critical to numerical reservoir simulations. Matlab reservoir simulation toolbox mrst knutandreas lie. Chen, modeling reservoir geometry with irregular grids, in. Unstructured gridding and consistent discretizations for reservoirs.
Among these flexible grids, the corner point geometry is the most used with the advantage of easy implementation in standard reservoir simulators and of cpu time gain due to regular matrix structure. Corner point geometry in reservoir simulation earthdoc. The development of a generalpurpose reservoir simulation framework for coupled systems of unstructured reservoir models and advanced wells is the subject of this dissertation. Tpg4160 reservoir simulation 2018 lecture note 1 norwegian university of science and technology professor jon kleppe department of petroleum engineering and applied geophysics 8. In reality, flow of fluid would not occur between the two blocks, which is otherwise expected in the case of regular geometry. Pdf mathematical models for oil reservoir simulation. This value typically corresponds to the zcorn field of a data structure created by function readgrdecl. The faces of such a cell may be bilinear surfaces, and may form part of a distorted grid. Generalized transmissibilities for distorted grids in. Learn about reservoir simulation using eclipse blackoil.
Most commonly, a structured cornerpoint geometry grid with hexahedral cells is built. Flexible grids, such as corner point geometry, triangular grids or voronoi grids, can be used to improve the accuracy. Introduction to reservoir simulation analytical and numerical. Tthhee oorriiggiinnss ooff ooiill aanndd ggaass aanndd hhooww tthheeyy aarree ffoorrmmeedd kerogen is the lipidrich part of organic matter that is insoluble in common organic solvents lipids are the more waxy parts of animals and some plants. An overview of the geology for the johansen formation and neighboring geological formations is given, together with a discussion of issues for geological and geophysical modelling and integrated fluid flow modelling.
Highquality grids guarantee the fidelity of a reservoir model and keep the flow calculations simple. It enables operators to simulate detailed geological features and quantify uncertainties by creating accurate production. Hybrid mesh generation for reservoir flow simulation in cpg grids t. Clifford corner point geometry in reservoir simulation d. Principles of applied reservoir simulation, fourth edition, continues to provide the fundamentals on these topics for both early and seasoned career engineers and researchers. Connecting cornerpoint and centroidal voronoi grids for. The corner point geometry can represent complex reservoir geometries by specifying the corners of each grid block in grid building. Principles of applied reservoir simulation, fourth edition, delivers knowledge critical for todays basic and advanced reservoir and asset management. Hybrid mesh generation for reservoir flow simulation in cpg grids.
Geological modeling and simulation of co 2 injection in the. Construction of geological model scenarios in a highly. Stratigraphic model grid smg and corner point grid cpg lateral geometry. A shaly layer modelled as a gap nongrid in a corner point grid. The research, however, has taken place largely within the industry itself, and has remained somewhat inaccessible to the scientific community. Allocate initial pressure and saturation distributions. Complex reservoir problems demand careful reservoir simulation studies. Reservoir dips, fault planes, pinchout boundaries, irregular surfaces, and other structural heterogeneities are more accurately represented when corner point geometry is utilized. Hello to you all, engineers and fans of nodalpoint. Techniques for modeling complex reservoirs and advanced wells.
In geometry, a corner point grid is a tessellation of a euclidean 3d volume where the base cell has 6 faces. Entire res w associated aquifers numerous wells, wellbore, and surface models. Eclipse blackoil reservoir simulation software is a fully implicit, threephase, 3d, generalpurpose black oil simulator that includes several advanced and unique features. In order to distinguish depth variations due to these two effects, it is useful to specify a simulation cell through the positions of its eight corner points. Chapter 7 reservoir geometry and properties reading assignment. Ponting a boundary element solution to the transient pressure response of. In the special case of all pillars being vertical, the top and bottom face of each cornerpoint cell are described by bilinear surfaces and the side faces are planes. Review supports industry standard simulators including eclipse and vip with legacy support for older simulators such as simbest, workbench, comp and chears. Permeability upscaling on cornerpoint geometry in the.
Reservoir simulation models are becoming increasingly sophisticated in tandem with the. Embedded discrete fracture modeling and application in reservoir simulation is an essential reference for anyone interested in performing reservoir simulation of conventional and unconventional fractured reservoirs. Oct 11, 2014 reservoir modeling and characterization sigve hamilton aspelund 2. Unstructured grids were introduced in reservoir simulation in the late 1980s and early. The aim of gridding in reservoir simulation is to turn the geological model. Lecture slides, lectures 15, numerical reservoir simulation practical fdp sample questions samplepractice exam 2014, questions lec2 lectures lecture 3 res sim lecture 1 res sim. Reservoir simulation process reservoir simulation is briefly. Pdf we present new approaches to reservoir modelling and flow simulation that dispose. The next issue is whether we should use a simple cartesian grid x, y, z or some other grid. Onedimensional, onephase reservoir simulation fluid systems. New insight with highresolution reservoir simulation.
Core functionality the matlab reservoir simulation. Basic applied reservoir simulation by fmursa issuu. Eclipse blackoil reservoir simulation summary powered by. A new seismic to simulation workflow is proposed, where the aim is the reduction of the overall turnaround time, from seismic data acquisition to reservoir model building and simulation. This is difficult in block centre geometry in which the cell is positioned by its. Hybrid mesh generation for reservoir flow simulation in.
A common requirement in reservoir simulation is an increased level of detail around an item of interest such as a well. It is extremely flexible and can be used to simulate complex reservoir structures using several grid options such as rectangular grids, radial grids, corner point geometry and automatic grid generation. In a, the grid is orthogonal but the dippingfault geometry is. Basic applied reservoir simulation turgay ertekin george e.
Cornerpoint geometry uses polygons for grid cells, and gridblocks are. The course emphasizes the use of the software rather than simulation methodology. Jun 23, 2000 reservoir stimulation sets forth a rationalisation of stimulation using reservoir engineering concepts, and addresses topics such as formation characterisation, hydraulic fracturing and matrix acidizing. Blocks have flat faces, and their elevations are assigned. The conventional method, using cartesian or corner point geometry grids. Discretization and gridding in reservoir simulation 2. Pdf reservoir modeling for flow simulation using surfaces. Kuliah ivgridding and well modelling in reservoir simulation. Use of corner point geometry in reservoir simulation.
Spe textbook series the textbook series of the society of petroleum. Feb 17, 2015 once we have the governing physics, we can build the reservoir simulation model by filling up with all other detailed information, including rock properties, fluid properties, reservoir initial and boundary conditions, etc. A set of straight lines defined by their end points define the pillars of the corner point grid. In the case of relatively simple geometry, the reservoir model is built on regular grid blocks.
Jan 18, 2010 eclipse blackoil reservoir simulation software is a fully implicit, threephase, 3d, generalpurpose black oil simulator that includes several advanced and unique features. A basic edfm approach using cartesian grids and advanced edfm approach using corner point and unstructured grids will be covered. Reservoir fluid characterisation supplementary scripts used at the montanuniversitat up to the retirement. Multiscale mixed methods on cornerpoint grids semantic scholar.
Simulation grid building principles an optimum grid for reservoir simulation results from the compromise between the desired accuracy of fluid flow modeling and the available computing power. In the example, we will solve the singlephase, incompressible pressure equation using the cornerpoint geometry from synthetic reservoir model from the saigup study. The 3d system in a grid allows a better examination of infill well locations and watergas calculations. Eclipse blackoil reservoir simulation summary powered. The grids must be identical in the domain solved by the reservoir simulator. Assumed to be a threeelement vector of positive extents. The purpose of this example is to demonstrate how the twopoint flow solver can be applied to compute flow on a real grid model that has degenerate cell geometries and nonneighbouring connections arising from a number of faults, and inactive cells. Embedded discrete fracture modeling for compositional. Basics of reservoir simulation with the eclipse reservoir simulator.
Natural fractured reservoir engineering phdg textbooks in preparation, intended to be issued during 2015. The pillars have a lexicographical ordering that determines neighbouring pillars. Permeability upscaling on cornerpoint geometry in the nearwell region. Mathematical model computer codes numerical model physical model figure 1. Eclipse 300 solves the reservoir flow equations for compositional hydrocarbon descriptions and thermal simulation. Nonconventional wells are utilized to enlarge production rates and recovery in petroleum industry.
This textbook is only one of the tools to teach the reservoir simulation techniques at. Corner point geometry grid blocks in corner point geometry can have their eight corners individually. Aydineffect of faulting on fluid flow in porous sandstones. Cornerpoint grids are supported by most reservoir simulation software, and has become. Before joining the uae university,he was associate professor of petroleum and natural gas engineering at the pennsylvania state university 19851992, where he was a tenured faculty member, supervised to completion two ms and two phd students, and. 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. Aug 14, 2009 the johansen formation is a candidate site for largescale co 2 storage offshore of the southwestern coast of norway. Sep 23, 2007 reservoir simulation of complex problems. A reservoir simulation model is a distillation of a huge amount of data from many different studies. Appendix 5 caprock evaluation and reservoir simulation study. Flow diagnostics on fully unstructured grids heriotwatt. It can also display difference maps in time or between models, and perform history match quantification and ranking.
Keka ojha department of petroleum engineering indian school of mines universitydhanbad what is simulation literal meaning. Hybrid mesh generation for reservoir flow simulation in cpg grids springerlink. So i want to pass a little information, to those of you who will be willing to take this. Knutandreas lie an introduction to reservoir simulation using matlab user guide for the matlab reservoir simulation toolbox mrst december. Hydrocarbon reservoirs commonly possess a geometry which incorporates both dip and faulting. Formation damage, which refers to a loss in reservoir productivity, is also examined comprehensively. Mathematical models and finite elements for reservoir. Numerical simulation of complex reservoir problems and the need for a different line of attack. Geometry modeling grid generation stanford university. Jensen simulation of waterflood fracture growth with coupled fluid flow, temperature and rock elasticity p. Understand how the simulator initializes and executes. Cornerpoint grids are supported by most reservoir simulation software, and has become an industry standard. Stanfords general purpose research simulator gprs serves as the base for the new framework.
Model simple to structurally complex, heterogeneous, oil and gas reservoirs, using small to very large scale multimillion grid cell models to achieve reliable production forecasts. Numerical simulation of complex reservoir problems and the. However, nature is not as orderly as the laboratory machine shop and thus the reservoir model must conform with the natural boundaries of the. Chapter 3 in reservoir simulation if reservoirs were rectangular parallelpipeds then they could be modeled with cartesian coordinates. Aboukassem is professor of petroleum engineering at the uae university in the united arab emirates, where he has taught since 1993. Embedded discrete fracture modeling and application in. Faults are internal boundaries that are important to model in reservoir simulation. Mcvay the grid orientation effect is a longstanding problem plaguing reservoir simulators that employ finite difference schemes. Build more detailed static reservoir model, fit for dynamic modeling. Reservoir simulation ipsas petroleum reservoir fluid.
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