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Pore Scale Network Modeling Of Two And Three Phase Flow Based On Thermodynamically Consistent Threshold Capillary Pressures
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Book Synopsis Pore-scale Network Modeling of Two-and Three-phase Flow Based on Thermodynamically Consistent Threshold Capillary Pressures by : Arsalan Zolfaghari Shahrak
Download or read book Pore-scale Network Modeling of Two-and Three-phase Flow Based on Thermodynamically Consistent Threshold Capillary Pressures written by Arsalan Zolfaghari Shahrak and published by . This book was released on 2014 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pore-scale network model is developed to simulate formation and collapse of wetting and spreading oil layers in two- and three-phase flow systems. We focus mainly on oil layers and their connectivity at low oil saturations particularly in three-phase flow processes. A new configuration, i.e., cusp phase location, has been introduced to address connectivity and conductivity of the oil phase in non-spreading three-phase systems. Helmholtz free energy balance and Mayer-Stowe-Princen (MS-P) method are used to find threshold capillary pressures of two- and three-phase pore-scale displacements. Minimization of Helmholtz free energy for each relevant displacement enables the model to accurately determine the most favorable displacement, and hence, improve its predictive capabilities particularly for relative permeabilities, capillary pressures, and residual saturations for a given set of fluid and rock properties and saturation path trajectory. Multiple phases can reside in each pore (i.e., in corners, center, layers, and cusp phase locations). Different layer collapse displacement mechanisms, i.e., based on MS-P analysis or geometrical criteria, are implemented in the model. We have introduced four different layer collapse policies for oil or gas. The model is rigorously validated against three sets of experimental data to test its predictive capabilities with different porous mediums and fluid systems. All three-phase equilibrium interfacial tensions used for the prediction of three-phase experimental data were measured and used in model validation. The results indicate that the previously-used geometrical criterion for the collapse of oil layers yields lower residual oil saturations than the experimentally measured values in both two- and three-phase systems. Incorporation of the MS-P method and cusp analysis significantly enhances the agreement with experimental data. The validated model is then used to study the effects of wettability, saturation history, spreading coefficient, and initial oil saturation on three-phase oil, gas, and water relative permeabilities and residual oil saturation.
Book Synopsis Upscaling Multiphase Flow in Porous Media by : D.B. Das
Download or read book Upscaling Multiphase Flow in Porous Media written by D.B. Das and published by Springer Science & Business Media. This book was released on 2005-06-10 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides concise, up-to-date and easy-to-follow information on certain aspects of an ever important research area: multiphase flow in porous media. This flow type is of great significance in many petroleum and environmental engineering problems, such as in secondary and tertiary oil recovery, subsurface remediation and CO2 sequestration. This book contains a collection of selected papers (all refereed) from a number of well-known experts on multiphase flow. The papers describe both recent and state-of-the-art modeling and experimental techniques for study of multiphase flow phenomena in porous media. Specifically, the book analyses three advanced topics: upscaling, pore-scale modeling, and dynamic effects in multiphase flow in porous media. This will be an invaluable reference for the development of new theories and computer-based modeling techniques for solving realistic multiphase flow problems. Part of this book has already been published in a journal. Audience This book will be of interest to academics, researchers and consultants working in the area of flow in porous media.
Book Synopsis Direct Pore-to-core Up-scaling of Displacement Processes by : Arash Aghaei
Download or read book Direct Pore-to-core Up-scaling of Displacement Processes written by Arash Aghaei and published by . This book was released on 2014 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a new dynamic pore network model that is capable of up-scaling two-phase flow processes from pore to core. This dynamic model provides a platform to study various flow processes in porous media at the core scale using the pore-scale physics. The most critical features of this platform can be listed as (1) the inclusion of viscous, capillary, and gravity pressure drops in pore-scale displacement thresholds, (2) wetting-phase corner flow in capillary elements with angular cross-sections, (3) adjustments of corner interfaces between wetting and non-wetting phases based on changes in local capillary pressure, (4) simultaneous injection of wetting and non-wetting phases from the inlet of the medium at constant flow rates that makes the study of steady-state processes possible, (5) heavy parallelization using a three-dimensional domain decomposition scheme that has enabled us to study two-phase flow at the core scale, and (6) constant pressure boundary condition at the outlet. For the validation of the dynamic model, three two-phase miniature core-flooding experiments were performed in Berea and Bentheimer sandstone core samples. The experiments were performed in a state-of-the-art core-flooding system integrated with a high-resolution X-ray micro-CT scanner. In-situ contact angles that are measured from high-resolution micro-CT images of the pore space during the experiments are used to design contact angle distributions in the digital pore space. Simulations are performed in the pore networks constructed from high-resolution micro-CT images of the core samples used in the experiments. In order to replicate the fluid systems of the experiments, fluid properties are measured in laboratory at the experimental conditions and fed to the dynamic model as inputs. The dynamic model is rigorously validated, by comparing the predicted local saturation profiles, fractional flow curves, relative permeabilities, and residual oil saturations with their experimental counterparts. The validated dynamic model is then used to study low-IFT and high viscosity two-phase flow processes and investigate the effect of high capillary number on relative permeabilities and residual oil saturation.
Book Synopsis Upscaling Multiphase Flow in Porous Media by : D.B. Das
Download or read book Upscaling Multiphase Flow in Porous Media written by D.B. Das and published by Springer Science & Business Media. This book was released on 2005-12-05 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides concise, up-to-date and easy-to-follow information on certain aspects of an ever important research area: multiphase flow in porous media. This flow type is of great significance in many petroleum and environmental engineering problems, such as in secondary and tertiary oil recovery, subsurface remediation and CO2 sequestration. This book contains a collection of selected papers (all refereed) from a number of well-known experts on multiphase flow. The papers describe both recent and state-of-the-art modeling and experimental techniques for study of multiphase flow phenomena in porous media. Specifically, the book analyses three advanced topics: upscaling, pore-scale modeling, and dynamic effects in multiphase flow in porous media. This will be an invaluable reference for the development of new theories and computer-based modeling techniques for solving realistic multiphase flow problems. Part of this book has already been published in a journal. Audience This book will be of interest to academics, researchers and consultants working in the area of flow in porous media.
Book Synopsis Mathematical Modeling for Flow and Transport Through Porous Media by : Gedeon Dagan
Download or read book Mathematical Modeling for Flow and Transport Through Porous Media written by Gedeon Dagan and published by Springer Science & Business Media. This book was released on 1991 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains a selection of articles presented at an International Workshop on `Mathematical Modeling for Flow and Transport Through Porous Media'. The major topics of the meeting were free and moving boundary problems, structured media, multiphase flow, scale problems, stochastic aspects, parameter identification and optimization problems. The volume also represents a few contributions on the incorporation of chemical and biological processes in mathematical models for transport in porous media. The book is directed at researchers active in porous media, mathematical modeling, petroleum and geotechnical engineering and environmental sciences.
Book Synopsis Development of a Pore-scale Model for Simulating Two and Three Phase Capillary Pressure - Saturation Relationships by : Wendy Eileen Soll
Download or read book Development of a Pore-scale Model for Simulating Two and Three Phase Capillary Pressure - Saturation Relationships written by Wendy Eileen Soll and published by . This book was released on 1991 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Multiphase Flow in Permeable Media by : Martin J. Blunt
Download or read book Multiphase Flow in Permeable Media written by Martin J. Blunt and published by Cambridge University Press. This book was released on 2017-02-16 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a fundamental description of multiphase fluid flow through porous rock, based on understanding movement at the pore, or microscopic, scale.
Book Synopsis Physically-based Quasi-static Pore Network Simulator of Drainage and Imbibition in Two and Three-phase Flow of Immiscible Fluids by : Ahmed Mohammed Al-Futaisi
Download or read book Physically-based Quasi-static Pore Network Simulator of Drainage and Imbibition in Two and Three-phase Flow of Immiscible Fluids written by Ahmed Mohammed Al-Futaisi and published by . This book was released on 2002 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling Multiphase Flow Through Micro-CT Images of the Pore Space by : Ali Qaseminejad Raeini
Download or read book Modelling Multiphase Flow Through Micro-CT Images of the Pore Space written by Ali Qaseminejad Raeini and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a numerical method for modelling two-phase flow through porous media directly at the pore scale. The volume of fluid method is used to capture the interface motion. The volume of fluid equation and the incompressible Navier-Stokes equations are discretised by the finite volume method using a single fluid methodology, with a discontinuity in the phase properties. Capillary forces are calculated using a new semi-sharp formulation and filtered, to allow for simulations at low capillary numbers and avoid non-physical velocities. They are applied into the Navier-Stokes equations using a semi-implicit formulation, which allows larger time steps at low capillary numbers. The numerical method is verified on several test cases, demonstrating its efficiency, stability and accuracy in modelling multiphase flow through porous media with complex interface motion and irregular solid boundaries. We present two-phase flow simulations on simple pore geometries and study the mechanisms controlling two-phase flow at the pore scale. Particularly, we study the effect of geometry and flow rate on trapping and mobilization of the non-wetting-phase. We introduce a new concept to upscale the subpore-scale forces and find the relations between the flow and the pore-scale pressure drops. These information can be used as input to pore-network models. As an example, we applied this concept to predict the threshold capillary number to prevent trapping during imbibition. Furthermore, we present two-phase flow simulations on two micro-CT images of porous media and show the effect of capillary number on the flow pattern, the trapped non-wetting phase saturation and blob sizes. We present a rigorous approach to relate the pore-scale forces controlling the flow to the Darcy-scale parameters and use it to obtain relative permeability curves. Overall, this thesis provides a methodology for a detailed pore-scale analysis of multiphase flow, serving as a rigorous foundation for large-scale modelling and prediction.
Book Synopsis Pore Scale Modeling of Multiphase Flow in Heterogeneously Wet Media by : Rahul Verma (Ph. D. in petroleum engineering)
Download or read book Pore Scale Modeling of Multiphase Flow in Heterogeneously Wet Media written by Rahul Verma (Ph. D. in petroleum engineering) and published by . This book was released on 2018 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pore scale simulation has recently become an important tool for understanding multiphase flow behavior in porous materials. It enables detailed mechanistic studies of upscaled flow parameters such as capillary-pressure saturation curves, residual saturation of each phase, and relative permeability. However, direct modeling of multiphase flow given the complex solid surfaces in a porous medium is a non-trivial problem. In this work, we develop a new quasi-static, variational level set formulation capable of handling trapped phases as well as wettability. We extend our previous work [1, 2] for simple geometries, and develop a new parallelized code enabling application of the method in larger geometries. We compare our model results against several experimental and semi-analytical datasets. The model is first applied to both homogeneous and heterogeneously wet rhomboidal pores, and compared against semi-analytical solutions derived by Mason and Morrow [3]. Subsequently, we focus on a quasi-2D micromodel study of fluid-fluid displacement for different wettabilities, which is quantified using the displacement efficiency and fractal dimension of the displacement patterns [4]. We then study classic experiments by Haines [5] and Leverett [6] for measuring the capillary pressure and relative permeability curves in sphere packs and sandpacks, respectively. We match trends in trapping in sandpacks during drainage/imbibition experiments by Pentland et al. [7], and also compare it against predictions by several other pore-scale models. Finally, we confirm the pore-scale hypothesis suggested by DiCarlo et al. [8] for explaining experimental observations of three-phase relative permeability of the intermediate-wet phase in sandpack experiments. For these three-phase experiments, we propose an approximation based on finding phases trapped between constant curvature surfaces, using two-phase simulations. We demonstrate the versatility of our methods by applying it to these disparate experimental datasets, and suggest future applications of our work.
Book Synopsis Pore Scale Network Modeling Approach by : Abbas Khaksar Manshad
Download or read book Pore Scale Network Modeling Approach written by Abbas Khaksar Manshad and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The architecture and geometry of the void space of a porous medium and its complementary grain matrix determine several macroscopic properties of the rock such as porosity, relative permeability and capillary pressure. Therefore, it is important to study the microscopic structure of the reservoir pores and understand the physical fluid displacements through them. One approach to this problem is pore-scale modeling that requires a detailed understanding of the physical processes occurring on the pore scale and a complete description of the morphology of the pore space. The pore scale network is a representation of the void space of the reservoir rock. Wide voids of the reservoir rocks are represented by the pore bodies which are interconnected by narrow spaces called pore throats. The key results of the network model are the ability to predict the trend in relative permeability, capillary curves, fractional flows and residual saturations with capillary number and viscosity ratio and to reproduce the displacement patterns.
Book Synopsis Pore-scale Percolation Modeling of Two-phase Flow in Granular Porous Media by : Tyson Strand
Download or read book Pore-scale Percolation Modeling of Two-phase Flow in Granular Porous Media written by Tyson Strand and published by . This book was released on 2003 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods of Measuring Moisture in Building Materials and Structures by : Lars-Olof Nilsson
Download or read book Methods of Measuring Moisture in Building Materials and Structures written by Lars-Olof Nilsson and published by Springer. This book was released on 2018-04-13 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: RILEM TC 248-MMB was established in 2012 with the main aim to improve and distribute knowledge related to moisture measurement in construction materials in various scientific and industrial applications. Properties and performance of building materials and structures are influenced to a large extent by the moisture conditions in the materials. Obvious examples are heat conductivity, shrinkage and creep, transport properties, most types of deterioration, discoloration etc. For research and applications the moisture conditions must be quantified, by measurements in the laboratory or under field conditions. There is much variation in methods being used, even within the same topic, in different countries, both with regard to materials and to applications. No consensus whatsoever does exist. For the construction industry it is important to be able to quantify the moisture conditions in an accurate way in various applications. This state-of-the-art report is divided into two parts, Principles and Applications, with altogether 28 chapters on various moisture measuring principles and a number of applications.
Book Synopsis An Introduction to Reservoir Simulation Using MATLAB/GNU Octave by : Knut-Andreas Lie
Download or read book An Introduction to Reservoir Simulation Using MATLAB/GNU Octave written by Knut-Andreas Lie and published by Cambridge University Press. This book was released on 2019-08-08 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents numerical methods for reservoir simulation, with efficient implementation and examples using widely-used online open-source code, for researchers, professionals and advanced students. This title is also available as Open Access on Cambridge Core.
Download or read book Porous Media written by F. A.L. Dullien and published by Academic Press. This book was released on 2012-12-02 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the relationship between transport properties and pore structure of porous material. Models of pore structure are presented with a discussion of how such models can be used to predict the transport properties of porous media. Portions of the book are devoted to interpretations of experimental results in this area and directions for future research. Practical applications are given where applicable, and are expected to be useful for a large number of different fields, including reservoir engineering, geology, hydrogeology, soil science, chemical process engineering, biomedical engineering, fuel technology, hydrometallurgy, nuclear reactor technology, and materials science. - Presents mechanisms of immiscible and miscible displacement (hydrodynamic dispersion) process in porous media - Examines relationships between pore structure and fluid transport - Considers approaches to enhanced oil recovery - Explores network modeling and perolation theory
Book Synopsis Adsorption by Powders and Porous Solids by : Jean Rouquerol
Download or read book Adsorption by Powders and Porous Solids written by Jean Rouquerol and published by Academic Press. This book was released on 2013-09-06 with total page 647 pages. Available in PDF, EPUB and Kindle. Book excerpt: The declared objective of this book is to provide an introductory review of the various theoretical and practical aspects of adsorption by powders and porous solids with particular reference to materials of technological importance. The primary aim is to meet the needs of students and non-specialists who are new to surface science or who wish to use the advanced techniques now available for the determination of surface area, pore size and surface characterization. In addition, a critical account is given of recent work on the adsorptive properties of activated carbons, oxides, clays and zeolites. - Provides a comprehensive treatment of adsorption at both the gas/solid interface and the liquid/solid interface - Includes chapters dealing with experimental methodology and the interpretation of adsorption data obtained with porous oxides, carbons and zeolites - Techniques capture the importance of heterogeneous catalysis, chemical engineering and the production of pigments, cements, agrochemicals, and pharmaceuticals
Book Synopsis Rock Fractures and Fluid Flow by : National Research Council
Download or read book Rock Fractures and Fluid Flow written by National Research Council and published by National Academies Press. This book was released on 1996-08-27 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific understanding of fluid flow in rock fracturesâ€"a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storageâ€"has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.
