Numerical Modeling Of Thermal Recovery Processes
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Numerical Modeling Of Thermal Recovery Processes
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Author : Mohamed Yousef Soliman
language : en
Publisher:
Release Date : 1979
Numerical Modeling Of Thermal Recovery Processes written by Mohamed Yousef Soliman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Combustion categories.
Numerical Modeling Of Thermal Recovery Processes
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Author : Stanford University. Petroleum Research Institute
language : en
Publisher:
Release Date : 1981
Numerical Modeling Of Thermal Recovery Processes written by Stanford University. Petroleum Research Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Thermal oil recovery categories.
Efficient Simulation Of Thermal Enhanced Oil Recovery Processes
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Author : Zhouyuan Zhu
language : en
Publisher: Stanford University
Release Date : 2011
Efficient Simulation Of Thermal Enhanced Oil Recovery Processes written by Zhouyuan Zhu and has been published by Stanford University this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Simulating thermal processes is usually computationally expensive because of the complexity of the problem and strong nonlinearities encountered. In this work, we explore novel and efficient simulation techniques to solve thermal enhanced oil recovery problems. We focus on two major topics: the extension of streamline simulation for thermal enhanced oil recovery and the efficient simulation of chemical reaction kinetics as applied to the in-situ combustion process. For thermal streamline simulation, we first study the extension to hot water flood processes, in which we have temperature induced viscosity changes and thermal volume changes. We first compute the pressure field on an Eulerian grid. We then solve for the advective parts of the mass balance and energy equations along the individual streamlines, accounting for the compressibility effects. At the end of each global time step, we account for the nonadvective terms on the Eulerian grid along with gravity using operator splitting. We test our streamline simulator and compare the results with a commercial thermal simulator. Sensitivity studies for compressibility, gravity and thermal conduction effects are presented. We further extended our thermal streamline simulation to steam flooding. Steam flooding exhibits large volume changes and compressibility associated with the phase behavior of steam, strong gravity segregation and override, and highly coupled energy and mass transport. To overcome these challenges we implement a novel pressure update along the streamlines, a Glowinski scheme operator splitting and a preliminary streamline/finite volume hybrid approach. We tested our streamline simulator on a series of test cases. We compared our thermal streamline results with those computed by a commercial thermal simulator for both accuracy and efficiency. For the cases investigated, we are able to retain solution accuracy, while reducing computational cost and gaining connectivity information from the streamlines. These aspects are useful for reservoir engineering purposes. In traditional thermal reactive reservoir simulation, mass and energy balance equations are solved numerically on discretized reservoir grid blocks. The reaction terms are calculated through Arrhenius kinetics using cell-averaged properties, such as averaged temperature and reactant concentrations. For the in-situ combustion process, the chemical reaction front is physically very narrow, typically a few inches thick. To capture accurately this front, centimeter-sized grids are required that are orders of magnitude smaller than the affordable grid block sizes for full field reservoir models. To solve this grid size effect problem, we propose a new method based on a non-Arrhenius reaction upscaling approach. We do not resolve the combustion front on the grid, but instead use a subgrid-scale model that captures the overall effects of the combustion reactions on flow and transport, i.e. the amount of heat released, the amount of oil burned and the reaction products generated. The subgrid-scale model is calibrated using fine-scale highly accurate numerical simulation and laboratory experiments. This approach significantly improves the computational speed of in-situ combustion simulation as compared to traditional methods. We propose the detailed procedures to implement this methodology in a field-scale simulator. Test cases illustrate the solution consistency when scaling up the grid sizes in multidimensional heterogeneous problems. The methodology is also applicable to other subsurface reactive flow modeling problems with fast chemical reactions and sharp fronts. Displacement front stability is a major concern in the design of all the enhanced oil recovery processes. Historically, premature combustion front break through has been an issue for field operations of in-situ combustion. In this work, we perform detailed analysis based on both analytical methods and numerical simulation. We identify the different flow regimes and several driving fronts in a typical 1D ISC process. For the ISC process in a conventional mobile heavy oil reservoir, we identify the most critical front as the front of steam plateau driving the cold oil bank. We discuss the five main contributors for this front stability/instability: viscous force, condensation, heat conduction, coke plugging and gravity. Detailed numerical tests are performed to test and rank the relative importance of all these different effects.
Efficient Simulation Of Thermal Enhanced Oil Recovery Processes
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Author : Zhouyuan Zhu
language : en
Publisher:
Release Date : 2011
Efficient Simulation Of Thermal Enhanced Oil Recovery Processes written by Zhouyuan Zhu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Simulating thermal processes is usually computationally expensive because of the complexity of the problem and strong nonlinearities encountered. In this work, we explore novel and efficient simulation techniques to solve thermal enhanced oil recovery problems. We focus on two major topics: the extension of streamline simulation for thermal enhanced oil recovery and the efficient simulation of chemical reaction kinetics as applied to the in-situ combustion process. For thermal streamline simulation, we first study the extension to hot water flood processes, in which we have temperature induced viscosity changes and thermal volume changes. We first compute the pressure field on an Eulerian grid. We then solve for the advective parts of the mass balance and energy equations along the individual streamlines, accounting for the compressibility effects. At the end of each global time step, we account for the nonadvective terms on the Eulerian grid along with gravity using operator splitting. We test our streamline simulator and compare the results with a commercial thermal simulator. Sensitivity studies for compressibility, gravity and thermal conduction effects are presented. We further extended our thermal streamline simulation to steam flooding. Steam flooding exhibits large volume changes and compressibility associated with the phase behavior of steam, strong gravity segregation and override, and highly coupled energy and mass transport. To overcome these challenges we implement a novel pressure update along the streamlines, a Glowinski scheme operator splitting and a preliminary streamline/finite volume hybrid approach. We tested our streamline simulator on a series of test cases. We compared our thermal streamline results with those computed by a commercial thermal simulator for both accuracy and efficiency. For the cases investigated, we are able to retain solution accuracy, while reducing computational cost and gaining connectivity information from the streamlines. These aspects are useful for reservoir engineering purposes. In traditional thermal reactive reservoir simulation, mass and energy balance equations are solved numerically on discretized reservoir grid blocks. The reaction terms are calculated through Arrhenius kinetics using cell-averaged properties, such as averaged temperature and reactant concentrations. For the in-situ combustion process, the chemical reaction front is physically very narrow, typically a few inches thick. To capture accurately this front, centimeter-sized grids are required that are orders of magnitude smaller than the affordable grid block sizes for full field reservoir models. To solve this grid size effect problem, we propose a new method based on a non-Arrhenius reaction upscaling approach. We do not resolve the combustion front on the grid, but instead use a subgrid-scale model that captures the overall effects of the combustion reactions on flow and transport, i.e. the amount of heat released, the amount of oil burned and the reaction products generated. The subgrid-scale model is calibrated using fine-scale highly accurate numerical simulation and laboratory experiments. This approach significantly improves the computational speed of in-situ combustion simulation as compared to traditional methods. We propose the detailed procedures to implement this methodology in a field-scale simulator. Test cases illustrate the solution consistency when scaling up the grid sizes in multidimensional heterogeneous problems. The methodology is also applicable to other subsurface reactive flow modeling problems with fast chemical reactions and sharp fronts. Displacement front stability is a major concern in the design of all the enhanced oil recovery processes. Historically, premature combustion front break through has been an issue for field operations of in-situ combustion. In this work, we perform detailed analysis based on both analytical methods and numerical simulation. We identify the different flow regimes and several driving fronts in a typical 1D ISC process. For the ISC process in a conventional mobile heavy oil reservoir, we identify the most critical front as the front of steam plateau driving the cold oil bank. We discuss the five main contributors for this front stability/instability: viscous force, condensation, heat conduction, coke plugging and gravity. Detailed numerical tests are performed to test and rank the relative importance of all these different effects.
Analytical Modeling Of Transient Heat Transfer Coupled With Fluid Flow In Heavy Oil Reservoirs During Thermal Recovery Processes
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Author : Kuizheng Yu
language : en
Publisher:
Release Date : 2015
Analytical Modeling Of Transient Heat Transfer Coupled With Fluid Flow In Heavy Oil Reservoirs During Thermal Recovery Processes written by Kuizheng Yu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Numerical Simulation For Next Generation Thermal Power Plants
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Author : Falah Alobaid
language : en
Publisher: Springer
Release Date : 2018-03-29
Numerical Simulation For Next Generation Thermal Power Plants written by Falah Alobaid and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-29 with Technology & Engineering categories.
The book provides highly specialized researchers and practitioners with a major contribution to mathematical models’ developments for energy systems. First, dynamic process simulation models based on mixture flow and two-fluid models are developed for combined-cycle power plants, pulverised coal-fired power plants, concentrated solar power plant and municipal waste incineration. Operation data, obtained from different power stations, are used to investigate the capability of dynamic models to predict the behaviour of real processes and to analyse the influence of modeling assumptions on simulation results. Then, a computational fluid dynamics (CFD) simulation programme, so-called DEMEST, is developed. Here, the fluid-solid, particle-particle and particle-wall interactions are modeled by tracking all individual particles. To this purpose, the deterministic Euler-Lagrange/Discrete Element Method (DEM) is applied and further improved. An emphasis is given to the determination of inter-phase values, such as volumetric void fraction, momentum and heat transfers, using a new procedure known as the offset-method and to the particle-grid method allowing the refinement of the grid resolution independently from particle size. Model validation is described in detail. Moreover, thermochemical reaction models for solid fuel combustion are developed based on quasi-single-phase, two-fluid and Euler-Lagrange/MP-PIC models. Measurements obtained from actual power plants are used for validation and comparison of the developed numerical models.
A Thermochemical Heat Storage System For Households
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Author : Armand Fopah Lele
language : en
Publisher: Springer
Release Date : 2016-07-09
A Thermochemical Heat Storage System For Households written by Armand Fopah Lele and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-07-09 with Science categories.
The book offers a comprehensive report on the design and optimization of a thermochemical heat storage system for use in buildings. It combines theoretical and experimental work, with a special emphasis on model-based methods. It describes the numerical modeling of the heat exchanger, which allows recovery of about two thirds of the waste heat from both solar and thermal energy. The book also provides readers with a snapshot of current research on thermochemical storage systems, and an in-depth review of the most important concepts and methods in thermal management modeling. It represents a valuable resource for students, engineers and researchers interested in thermal energy storage processes, as well as for those dealing with modeling and 3D simulations in the field of energy and process engineering.
Numerical Modeling Of Geomechanical Effects Of Steam Injection In Sagd Heavy Oil Recovery
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Author : Setayesh Zandi
language : en
Publisher:
Release Date : 2011
Numerical Modeling Of Geomechanical Effects Of Steam Injection In Sagd Heavy Oil Recovery written by Setayesh Zandi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
The Steam Assisted Gravity Drainage (SAGD) process is a thermal enhanced oil recovery (EOR) method that appears tremendously successful, especially for bitumen. SAGD process results in a complex interaction of geomechanics and multiphase flow in cohesionless porous media. In this process, continuous steam injection changes reservoir pore pressure and temperature, which can increase or decrease the effective stresses in the reservoir. Quantification of the state of deformation and stress in the reservoir is essential for the correct prediction of reservoir productivity, seal integrity, hydro fracturing, well failure and also for the interpretation of 4D seismic used to follow the development of the steam chamber. In SAGD process, the analysis of reservoir-geomechanics is concerned with the simultaneous study of fluid flow and mechanical response of the reservoir. Reservoir-geomechanics coupled simulation is still an important research topic. To perform this kind of simulation, a solution is to use a finite element based simulator to describe geomechanics and a finite volume based simulator to describe fluid flow. In this thesis, the SAGD coupled thermo-hydro-mechanical modelling is conducted using PumaFlow reservoir simulator and Abaqus as the geomechanical simulator. The main issues being investigated in this study were (1) the coupling strategy, (2) the geometry and (3) type of gridding system. This work was performed on synthetic cases.
Alternating Injection Of Steam And Co2 For Thermal Recovery Of Heavy Oil
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Author : Kazeem Akintayo Lawal
language : en
Publisher:
Release Date : 2011
Alternating Injection Of Steam And Co2 For Thermal Recovery Of Heavy Oil written by Kazeem Akintayo Lawal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Numerical Modeling And Well Layout Design For Egs
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Author : Fangming Jiang
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2014-11-25
Numerical Modeling And Well Layout Design For Egs written by Fangming Jiang and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-11-25 with categories.
We first present with great details a three-dimensional transient model of enhanced geothermal systems (EGS) heat extraction processes. This model takes the reservoir as an equivalent porous medium while considers the local thermal non-equilibrium between solid rock matrix and fluid flowing in the fractured rock mass. One other salient feature of this model is its capability of simulating the complete subsurface thermo-hydraulic process in EGS, not only the thermo-flow in the reservoir and well boreholes, but also the heat transport in rocks enclosing the reservoir. Simulation results unravel the underlying mechanism for preferential flow or short-circuit flow forming in well-fractured, homogeneous reservoirs of different permeability values. We then perform a thorough numerical study to the effects of well layout on EGS heat extraction. Last, we discuss about the hot dry rock (HDR) heat recovery factor based on numerous simulated cases and estimate the amount of HDR geothermal resource that can be converted into electricity by EGS.