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Introduction to reservior simulation
Introduction to reservior simulation
Published: 2015/08/28
Channel: PGE 323M Reservoir Engineering III (Simulation)
Reservoir simulation basics
Reservoir simulation basics
Published: 2017/03/31
Channel: EAGE Suez
Dr. Hamdi Tchelepi - Scalable Reservoir Simulation Challenges
Dr. Hamdi Tchelepi - Scalable Reservoir Simulation Challenges
Published: 2014/12/04
Channel: Fondo de Sustentabilidad Energética
reservoir simulation p
reservoir simulation p
Published: 2017/01/27
Channel: mohamed Shihata
EOR Reservoir Simulation
EOR Reservoir Simulation
Published: 2016/11/30
Channel: Schlumberger Software
Introduction to Reservoir Simulation
Introduction to Reservoir Simulation
Published: 2016/08/31
Channel: PGE 323M Reservoir Engineering III (Simulation)
Next-Generation Reservoir Simulation
Next-Generation Reservoir Simulation
Published: 2016/05/05
Channel: Cray Inc.
What is Stochastic Reservoir Simulation?
What is Stochastic Reservoir Simulation?
Published: 2013/11/15
Channel: Stochastic Simulation
10 - Brief on reservoir simulation - flow equilibrium
10 - Brief on reservoir simulation - flow equilibrium
Published: 2017/02/17
Channel: Milan Stanko - Production Engineering
Reservoir Simulation software: ExcSim Overview
Reservoir Simulation software: ExcSim Overview
Published: 2016/12/27
Channel: Martin Deker
INTERSECT simulator–New insight with high resolution reservoir simulation
INTERSECT simulator–New insight with high resolution reservoir simulation
Published: 2015/05/07
Channel: Schlumberger Software
Reservoir Simulation | Using CMG
Reservoir Simulation | Using CMG
Published: 2017/02/23
Channel: Waqas J. Muhamed
Reservoir Simulation - Forecast Pressure
Reservoir Simulation - Forecast Pressure
Published: 2012/09/22
Channel: Energetic001
reservoir simulation Eclipse
reservoir simulation Eclipse
Published: 2017/05/23
Channel: Abdullah Alsaedi
RE-Studio the pre & post processor for Reservoir Simulation
RE-Studio the pre & post processor for Reservoir Simulation
Published: 2016/10/11
Channel: RE-Studio by Amarile
AEC: Reservoir Modeling and Reservoir Simulation
AEC: Reservoir Modeling and Reservoir Simulation
Published: 2013/03/06
Channel: McDonaldPR
Numerical Simulation of Fractured Reservoirs
Numerical Simulation of Fractured Reservoirs
Published: 2015/08/28
Channel: Society for Industrial and Applied Mathematics
Petroleum Engineering Careers and Reservoir Simulation
Petroleum Engineering Careers and Reservoir Simulation
Published: 2013/09/11
Channel: APMonitor.com
Oil Reservoir Simulation : Pressure
Oil Reservoir Simulation : Pressure
Published: 2011/05/23
Channel: bibrakc
Reservoir Simulation Visualization & Analysis with Tecplot RS
Reservoir Simulation Visualization & Analysis with Tecplot RS
Published: 2017/05/09
Channel: Tecplot, Inc.
Practical Reservoir Simulation
Practical Reservoir Simulation
Published: 2017/02/06
Channel: Amandine
FloViz Reservoir Simulation Video
FloViz Reservoir Simulation Video
Published: 2016/09/20
Channel: Matthew Fontenot
CMG Tutorial 1
CMG Tutorial 1
Published: 2016/02/08
Channel: Kamal Abdurahman
Sensitivity Studies of 3D Reservoir Simulation at the I-Lan Geothermal Area in Taiwan Using TOUGH2
Sensitivity Studies of 3D Reservoir Simulation at the I-Lan Geothermal Area in Taiwan Using TOUGH2
Published: 2016/09/30
Channel: American Geophysical Union (AGU)
New Release Petroleum Engineering Software: Rock Typer for Reservoir Simulation
New Release Petroleum Engineering Software: Rock Typer for Reservoir Simulation
Published: 2017/01/19
Channel: irianto petrus
Visualization of reservoir simulation using Tinia
Visualization of reservoir simulation using Tinia
Published: 2012/05/11
Channel: Hetcomp
CMG Webinar: The Role of Coupled Geomechanical Modelling in Reservoir Simulation Webinar
CMG Webinar: The Role of Coupled Geomechanical Modelling in Reservoir Simulation Webinar
Published: 2016/08/30
Channel: Computer Modelling Group Ltd.
From Seismic to Simulation: Geologic Integrity, No Compromise on 3D Reservoir Models
From Seismic to Simulation: Geologic Integrity, No Compromise on 3D Reservoir Models
Published: 2014/01/10
Channel: ParadigmLtd
How to download slumberger petrel software for petroleum engineers and reservoir simulation
How to download slumberger petrel software for petroleum engineers and reservoir simulation
Published: 2017/04/25
Channel: Akpareva Innocent
Petroleum Engineering EOR &  Reservoir Simulation Realistic Interview, Viva Voce
Petroleum Engineering EOR & Reservoir Simulation Realistic Interview, Viva Voce
Published: 2016/11/01
Channel: InterviewMax
CMG Webinar: The Role of Coupled Geomechanical Modelling in Reservoir Simulation
CMG Webinar: The Role of Coupled Geomechanical Modelling in Reservoir Simulation
Published: 2016/08/08
Channel: Computer Modelling Group Ltd.
User Friendly Reservoir Simulation with Merlin
User Friendly Reservoir Simulation with Merlin
Published: 2009/12/17
Channel: GeminiSolutionsInc
Meaning of Reservoir modelling, Reservoir simulation, Sensitivity analysis
Meaning of Reservoir modelling, Reservoir simulation, Sensitivity analysis
Published: 2017/07/11
Channel: Waqas J. Muhamed
Flow simulation how its done on petrel (Reservoir Engineer) 3
Flow simulation how its done on petrel (Reservoir Engineer) 3
Published: 2014/10/23
Channel: Marc Ngama
Reservoir Simulation Procedure
Reservoir Simulation Procedure
Published: 2015/07/12
Channel: Thaily SIN
Reservoir 3D Model by Petrel Software
Reservoir 3D Model by Petrel Software
Published: 2014/12/08
Channel: احمد عبد المعين الهر
Matlab / Programming Tutorial
Matlab / Programming Tutorial
Published: 2015/10/15
Channel: PGE 323M Reservoir Engineering III (Simulation)
Addicts Reservoir simulation - water is going over spillway
Addicts Reservoir simulation - water is going over spillway
Published: 2017/08/30
Channel: vojtar2
Virtual Campus: Eclipse Video Tutorial Part 1
Virtual Campus: Eclipse Video Tutorial Part 1
Published: 2010/04/13
Channel: SPE SU SC
Addicks Reservoir Simulation
Addicks Reservoir Simulation
Published: 2017/08/30
Channel: huerta1997
KRAKEN - Reservoir Simulation Plane Clipping
KRAKEN - Reservoir Simulation Plane Clipping
Published: 2010/07/09
Channel: ESSS Kraken
Video tutorial. Exercise DMS (Desicion Management System). Reservoir Simulation
Video tutorial. Exercise DMS (Desicion Management System). Reservoir Simulation
Published: 2011/01/19
Channel: Jose Colombia
Reservoir Simulation - Forecast Pseudo Pressure
Reservoir Simulation - Forecast Pseudo Pressure
Published: 2012/09/22
Channel: Energetic001
Implicit Method for single-phase flow equations
Implicit Method for single-phase flow equations
Published: 2016/09/15
Channel: PGE 323M Reservoir Engineering III (Simulation)
Pascal Hénon: Linear solvers for reservoir simulation
Pascal Hénon: Linear solvers for reservoir simulation
Published: 2016/08/10
Channel: Centre International de Rencontres Mathématiques
Charlie Lake A Pool: Reservoir Simulation
Charlie Lake A Pool: Reservoir Simulation
Published: 2011/04/14
Channel: sharkyr
Reservoir simulation
Reservoir simulation
Published: 2017/07/12
Channel: Waqas J. Muhamed
3 pairs Reservoir Simulation SAGD
3 pairs Reservoir Simulation SAGD
Published: 2012/09/22
Channel: Energetic001
Pre & Post Processing of Reservoir  Simulation with DepthInsight Reservoir Property Model
Pre & Post Processing of Reservoir Simulation with DepthInsight Reservoir Property Model
Published: 2015/10/29
Channel: GridWorld
Video Tutorial.  Radial Grid: CMG (Winprop & Builder) Reservoir Simulation
Video Tutorial. Radial Grid: CMG (Winprop & Builder) Reservoir Simulation
Published: 2011/01/10
Channel: Jose Colombia
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WIKIPEDIA ARTICLE

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A simulated depth map of the geology in a full field model from the Merlin finite difference simulator

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.

Uses[edit]

Reservoir simulation models are used by oil and gas companies in the development of new fields. Also, models are used in developed fields where production forecasts are needed to help make investment decisions. As building and maintaining a robust, reliable model of a field is often time-consuming and expensive, models are typically only constructed where large investment decisions are at stake. Improvements in simulation software have lowered the time to develop a model. Also, models can be run on personal computers rather than more expensive workstations.

For new fields, models may help development by identifying the number of wells required, the optimal completion of wells, the present and future needs for artificial lift, and the expected production of oil, water and gas.

For ongoing reservoir management, models may help in improved oil recovery by hydraulic fracturing. Highly deviated or horizontal wells can also be represented. Specialized software may be used in the design of hydraulic fracturing, then the improvements in productivity can be included in the field model. Also, future improvement in oil recovery with pressure maintenance by re-injection of produced gas or by water injection into an aquifer can be evaluated. Water flooding resulting in the improved displacement of oil is commonly evaluated using reservoir simulation.

The application of enhanced oil recovery (EOR) processes requires that the field possesses the necessary characteristics to make application successful. Model studies can assist in this evaluation. EOR processes include miscible displacement by natural gas, CO2, or nitrogen and chemical flooding (polymer, alkaline, surfactant, or a combination of these). Special features in simulation software is needed to represent these processes. In some miscible applications, the "smearing" of the flood front, also called numerical dispersion, may be a problem.

Reservoir simulation is used extensively to identify opportunities to increase oil production in heavy oil deposits. Oil recovery is improved by lowering the oil viscosity by injecting steam or hot water. Typical processes are steam soaks (steam is injected, then oil produced from the same well) and steam flooding (separate steam injectors and oil producers). These processes require simulators with special features to account for heat transfer to the fluids present and the formation, the subsequent property changes and heat losses outside of the formation.

A recent application of reservoir simulation is the modeling of coalbed methane (CBM) production. This application requires a specialized CBM simulator. In addition to the normal fractured (fissured) formation data, CBM simulation requires gas content data values at initial pressure, sorption isotherms, diffusion coefficient, and parameters to estimate the changes in absolute permeability as a function of pore-pressure depletion and gas desorption.

Fundamentals[edit]

Representation of an underground fault by a structure map generated by Contour map software for an 8500ft deep gas & Oil reservoir in the Erath field, Vermilion Parish, Erath, Louisiana. The left-to-right gap, near the top of the contour map indicates a Fault line. This fault line is between the blue/green contour lines and the purple/red/yellow contour lines. The thin red circular contour line in the middle of the map indicates the top of the oil reservoir. Because gas floats above oil, the thin red contour line marks the gas/oil contact zone.

Traditional finite difference simulators dominate both theoretical and practical work in reservoir simulation. Conventional FD simulation is underpinned by three physical concepts: conservation of mass, isothermal fluid phase behavior, and the Darcy approximation of fluid flow through porous media. Thermal simulators (most commonly used for heavy crude oil applications) add conservation of energy to this list, allowing temperatures to change within the reservoir.

Numerical techniques and approaches that are common in modern simulators:

  • Most modern FD simulation programs allow for construction of 3-D representations for use in either full-field or single-well models. 2-D approximations are also used in various conceptual models, such as cross-sections and 2-D radial grid models.
  • Theoretically, finite difference models permit discretization of the reservoir using both structured and more complex unstructured grids to accurately represent the geometry of the reservoir. Local grid refinements (a finer grid embedded inside of a coarse grid) are also a feature provided by many simulators to more accurately represent the near wellbore multi-phase flow effects. This "refined meshing" near wellbores is extremely important when analyzing issues such as water and gas coning in reservoirs. Other types of simulators include finite element and streamline.
  • Representation of faults and their transmissibilities are advanced features provided in many simulators. In these models, inter-cell flow transmissibilities must be computed for non-adjacent layers outside of conventional neighbor-to-neighbor connections.
  • Natural fracture simulation (known as dual-porosity and dual-permeability) is an advanced feature which model hydrocarbons in tight matrix blocks. Flow occurs from the tight matrix blocks to the more permeable fracture networks that surround the blocks, and to the wells.
  • A black oil simulator does not consider changes in composition of the hydrocarbons as the field is produced, beyond the solution or evolution of dissolved gas in oil, or vaporisation or dropout of condensate from gas.
  • A compositional reservoir simulator calculates the PVT properties of oil and gas phases once they have been fitted to an equation of state (EOS), as a mixture of components. The simulator then uses the fitted EOS equation to dynamically track the movement of both phases and components in field. This is accomplished at increased cost in setup time, compute time, and computer memory.
Correlating relative permeability

The simulation model computes the saturation change of three phases (oil, water and gas)and pressure of each phase in each cell at each time step. As a result of declining pressure as in a reservoir depletion study, gas will be liberated from the oil. If pressures increase as a result of water or gas injection, the gas is re-dissolved into the oil phase.

A simulation project of a developed field, usually requires "history matching" where historical field production and pressures are compared to calculated values. It was realised at an early stage that this was essentially an optimisation process, corresponding to Maximum Likelihood. As such, it can be automated, and there are multiple commercial and software packages designed to accomplish just that. The model's parameters are adjusted until a reasonable match is achieved on a field basis and usually for all wells. Commonly, producing water cuts or water-oil ratios and gas-oil ratios are matched.

Other engineering approaches[edit]

Without FD models, recovery estimates and oil rates can also be calculated using numerous analytical techniques which include material balance equations (including Havlena-Odeh and Tarner method), fractional flow curve methods (such as the Buckley-Leverett one-dimensional displacement method, the Deitz method for inclined structures, or coning models), and sweep efficiency estimation techniques for water floods and decline curve analysis. These methods were developed and used prior to traditional or "conventional" simulations tools as computationally inexpensive models based on simple homogeneous reservoir description. Analytical methods generally cannot capture all the details of the given reservoir or process, but are typically numerically fast and at times, sufficiently reliable. In modern reservoir engineering, they are generally used as screening or preliminary evaluation tools. Analytical methods are especially suitable for potential assets evaluation when the data are limited and the time is critical, or for broad studies as a pre-screening tool if a large number of processes and / or technologies are to be evaluated. The analytical methods are often developed and promoted in the academia or in-house, however commercial packages also exist.

Software[edit]

Many programs are available for reservoir simulation. The most well known (in alphabetical order) are:

Open Source:

  • BOAST - Black Oil Applied Simulation Tool (Boast) simulator is a free software package for reservoir simulation available from the U.S. Department of Energy.[1] Boast is an IMPES numerical simulator (finite-difference implicit pressure-explicit saturation) which finds the pressure distribution for a given time step first then calculates the saturation distribution for the same time step isothermal. The last release was in 1986 but it remains as a good simulator for educational purposes.
  • MRST - The MATLAB Reservoir Simulation Toolbox (MRST) is developed by SINTEF Applied Matemathics as a MATLAB® toolbox. The toolbox consists of two main parts: a core offering basic functionality and single and two-phase solvers, and a set of add-on modules offering more advanced models, viewers and solvers. MRST is mainly intended as a toolbox for rapid prototyping and demonstration of new simulation methods and modeling concepts on unstructured grids. Despite this, many of the tools are quite efficient and can be applied to surprisingly large and complex models.[2]
  • OPM - The Open Porous Media (OPM) initiative provides a set of open-source tools centered on the simulation of flow and transport of fluids in porous media.[3]

Commercial:

  • Schlumberger INTERSECT - The high-resolution reservoir simulator that goes beyond the capabilities offered by current-generation simulators. The result is improved accuracy and efficiency in field development planning and risk mitigation — even for the most complex fields. [4]
  • Schlumberger ECLIPSE - ECLIPSE The industry-reference reservoir simulator originally developed by ECL (Exploration Consultants Limited) and currently owned, developed, marketed and maintained by SIS (formerly known as GeoQuest), a division of Schlumberger. The name ECLIPSE originally was an acronym for "ECL´s Implicit Program for Simulation Engineering". Simulators include black oil, compositional, thermal finite-volume, and streamline simulation. Add-on options include local grid refinements, coalbed methane, gas field operations, advanced wells, reservoir coupling, and surface networks. [5]
  • CMG Suite (IMEX, GEM and STARS) - Computer Modelling Group currently offers three simulators: a black oil simulator, called IMEX, a compositional / unconventional simulator called GEM and a thermal and advanced processes simulator called STARS.[6]
  • Tempest MORE is a modern, next generation reservoir simulator, offering black oil, compositional and thermal options. [7]
  • ExcSim, a fully implicit 3-phase 2D modified black oil reservoir simulator for the Microsoft Excel® platform [8]
  • Landmark Nexus - Nexus is an oil and gas reservoir simulator originally developed as 'Falcon' by Amoco, Los Alamos National Laboratory and Cray Research. It is currently owned, developed, marketed and maintained by Landmark Graphics, a product service line of Halliburton. Nexus will gradually replace VIP, or Desktop VIP, Landmark's earlier generation of simulator.[citation needed]
  • Stochastic Simulation ResAssure - ResAssure is a stochastic simulation software solution, powered by a robust and extremely fast reservoir simulator.[9]
  • Rock Flow Dynamics tNavigator supports black oil, compositional and thermal compositional simulations for workstations and High Performance Computing clusters [10]
  • Plano Research Corporation FlowSim is a fully implicit 3-phase, 3-D, black oil and compositional finite difference reservoir simulator with LGRs, dual porosity dual permeability, and parallel capabilities.[11]
  • GrailQuest's ReservoirGrail employs a unique patented approach called Time Dynamic Volumetric Balancing [12] to simulate reservoirs during primary and secondary recovery.[13]
  • Gemini Solutions Merlin is a fully implicit 3-Phase finite difference reservoir simulator originally developed at the Texaco research department and currently used by the Bureau of Ocean Energy Management and Bureau of Safety and Environmental Enforcement to calculate Worst Case Discharge rates and burst/collapse pressures on casing shoes and blowout preventers.[14][15]
  • Under Palm Trees' DeepSim is a fully implicit, 3-phase, compositional finite difference reservoir simulator for the Android phone and tablet platform. This full featured simulator focuses on ease on use with its novel touch based user interface.[16][17]

See also[edit]

References[edit]

  • Aziz, K. and Settari, A., Petroleum Reservoir Simulation, 1979, Applied Science Publishers.
  • Ertekin, T, Abou-Kassem, J.H. and G.R. King, Basic Applied Reservoir Simulation, SPE Textbook Vol 10, 2001.
  • Fanchi, J., Principles of Applied Reservoir Simulation, 3rd Edition, Elsevier GPP, 2006.
  • Mattax, C.C. and Dalton, R. L, Reservoir Simulation, SPE Monograph Volume 13, 1990.
  • Holstein, E. (Editor), Petroleum Engineering Handbook, Volume V(b), Chapt 17, Reservoir Engineering, 2007.
  • Warner, H. (Editor), Petroleum Engineering Handbook,Volume VI, Chapter 6, Coalbed Methane, 2007.
  • Carlson, M., Practical Reservoir Simulation, 2006, PennWell Corporation.
  • R. E. Ewing, The Mathematics of Reservoir Simulation

Other References

  1. ^ "Department of Energy". Retrieved 3 March 2014. 
  2. ^ "MRST Homepage". Retrieved 3 March 2014. 
  3. ^ "Open Porous Media Initiative". Retrieved 3 March 2014. 
  4. ^ "INTERSECT Homepage". 
  5. ^ "ECLIPSE Homepage". 
  6. ^ "CMG Homepage". Retrieved 28 October 2016. 
  7. ^ "CMG Homepage". Retrieved 3 March 2014. 
  8. ^ "ExcSim". Retrieved 24 April 2015. 
  9. ^ "ResAssure". Retrieved 3 September 2014. 
  10. ^ "RFD Homepage". Retrieved 7 March 2014. 
  11. ^ "FlowSim". 
  12. ^ "ReservoirGrail Software Page". Retrieved 13 January 2016. 
  13. ^ "ReservoirGrail Homepage". Retrieved 13 January 2016. 
  14. ^ "Appendix E – Reservoir Modeling Team 2010; Reservoir Modeling Report" (PDF). Retrieved 19 April 2016. 
  15. ^ "BSEE Procurement Business Opportunities" (PDF). Retrieved 19 April 2016. 
  16. ^ "DeepSim - Android Apps on Google Play". play.google.com. Retrieved 2017-08-13. 
  17. ^ "DeepSim – Powerful reservoir simulation with an intuitive interface.". deepsim.stupendous.org. Retrieved 2017-08-13. 

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