Download or read book Mass Transport in Shale Reservoirs written by Mehmet Ali Torcuk and published by . This book was released on 2019 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mass Transport Within the Fracture matrix Systems of Unconventional Shale Reservoirs written by Ilkay Eker and published by . This book was released on 2018 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transport in Shale Reservoirs written by Kun Sang Lee and published by Gulf Professional Publishing. This book was released on 2019-02-20 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport in Shale Reservoirs fills the need for a necessary, integrative approach on shale reservoirs. It delivers both the fundamental theories of transport in shale reservoirs and the most recent advancements in the recovery of shale oil and gas in one convenient reference. Shale reservoirs have distinctive features dissimilar to those of conventional reservoirs, thus an accurate evaluation on the behavior of shale gas reservoirs requires an integrated understanding on their characteristics and the transport of reservoir and fluids. Updates on the various transport mechanisms in shale, such as molecular diffusion and phase behavior in nano-pores Applies theory to practice through simulation in both shale oil and gas Presents an up-to-date reference on remaining challenges, such as organic material in the shale simulation and multicomponent transport in CO2 injection processes

Download or read book Study of Multi scale Transport Phenomena in Tight Gas and Shale Gas Reservoir Systems written by Craig Matthew Freeman and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The hydrocarbon resources found in shale reservoirs have become an important energy source in recent years. Unconventional geological and engineering features of shale systems pose challenges to the characterization of these systems. These challenges have impeded efficient economic development of shale resources. New fundamental insights and tools are needed to improve the state of shale gas development. Few attempts have been made to model the compositional behavior of fluids in shale gas reservoirs. The transport and storage of reservoir fluids in shale is controlled by multiple distinct micro-scale physical phenomena. These phenomena include preferential Knudsen diffusion, differential desorption, and capillary critical effects. Together, these phenomena cause significant changes in fluid composition in the subsurface and a measureable change in the composition of the produced gas over time. In order to quantify this compositional change we developed a numerical model describing the coupled processes of desorption, diffusion, and phase behavior in heterogeneous ultra-tight rocks as a function of pore size. The model captures the various configurations of fractures induced by shale gas fracture stimulation. Through modeling of the physics at the macro-scale (e.g. reservoir-scale hydraulic fractures) and micro-scale (e.g. Knudsen diffusion in kerogen nanopores), we illustrate how and why gas composition changes spatially and temporally during production. We compare the results of our numerical model against measured composition data obtained at regular intervals from shale gas wells. We utilize the characteristic behaviors explicated by the model results to identify features in the measured data. We present a basis for a new method of production data analysis incorporating gas composition measurements in order to develop a more complete diagnostic process. Distinct fluctuations in the flowing gas composition are shown to uniquely identify the onset of fracture interference in horizontal wells with multiple transverse hydraulic fractures. The timescale and durations of the transitional flow regimes in shales are quantified using these measured composition data. These assessments appear to be robust even for high levels of noise in the rate and pressure data. Integration of the compositional shift analysis of this work with modern production analysis is used to infer reservoir properties. This work extends the current understanding of flow behavior and well performance for shale gas systems to encompass the physical phenomena leading to compositional change. This new understanding may be used to aid well performance analysis, optimize fracture and completion design, and improve the accuracy of reserves estimates. In this work we contribute a numerical model which captures multicomponent desorption, diffusion, and phase behavior in ultra-tight rocks. We also describe a workflow for incorporating measured gas composition data into modern production analysis. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/151782

Download or read book Gas Transport in Porous Media written by Clifford K. Ho and published by Springer Science & Business Media. This book was released on 2006-10-07 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: CLIFFORD K. HOAND STEPHEN W. WEBB Sandia National Laboratories, P. O. Box 5800, Albuquerque, NM 87185, USA Gas and vapor transport in porous media occur in a number of important applications includingdryingofindustrialandfoodproducts,oilandgasexploration,environm- tal remediation of contaminated sites, and carbon sequestration. Understanding the fundamental mechanisms and processes of gas and vapor transport in porous media allows models to be used to evaluate and optimize the performance and design of these systems. In this book, gas and vapor are distinguished by their available states at stan- ? dard temperature and pressure (20 C, 101 kPa). If the gas-phase constituent can also exist as a liquid phase at standard temperature and pressure (e. g. , water, ethanol, toluene, trichlorothylene), it is considered a vapor. If the gas-phase constituent is non-condensable at standard temperature and pressure (e. g. , oxygen, carbon di- ide, helium, hydrogen, propane), it is considered a gas. The distinction is important because different processes affect the transport and behavior of gases and vapors in porous media. For example, mechanisms specific to vapors include vapor-pressure lowering and enhanced vapor diffusion, which are caused by the presence of a g- phase constituent interacting with its liquid phase in an unsaturated porous media. In addition, the “heat-pipe” exploits isothermal latent heat exchange during evaporation and condensation to effectively transfer heat in designed and natural systems.

Download or read book A Transport Model for Shale Gas and Oil Reservoirs Including Adsorption and Non Darcy Flow Effects written by Xinya Xiong and published by . This book was released on 2013 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Appraisal of Transport and Deformation in Shale Reservoirs Using Natural Noble Gas Tracers written by and published by . This book was released on 2015 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents efforts to develop the use of in situ naturally-occurring noble gas tracers to evaluate transport mechanisms and deformation in shale hydrocarbon reservoirs. Noble gases are promising as shale reservoir diagnostic tools due to their sensitivity of transport to: shale pore structure; phase partitioning between groundwater, liquid, and gaseous hydrocarbons; and deformation from hydraulic fracturing. Approximately 1.5-year time-series of wellhead fluid samples were collected from two hydraulically-fractured wells. The noble gas compositions and isotopes suggest a strong signature of atmospheric contribution to the noble gases that mix with deep, old reservoir fluids. Complex mixing and transport of fracturing fluid and reservoir fluids occurs during production. Real-time laboratory measurements were performed on triaxially-deforming shale samples to link deformation behavior, transport, and gas tracer signatures. Finally, we present improved methods for production forecasts that borrow statistical strength from production data of nearby wells to reduce uncertainty in the forecasts.

Download or read book Multiscale Analysis of Mechanical and Transport Properties in Shale Gas Reservoirs written by Mohammad Hatami and published by . This book was released on 2021 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation focuses on multiscale analysis in shale to improve understanding of mechanical and transport properties in shale gas reservoirs. Laboratory measurements of the effects of constant confining pressure (CCP), and constant effective stress (CES) on permeability were coupled with multiscale finite element simulations and the development of a comprehensive apparent permeability model to study the mechanical behavior of shale and transport mechanisms in shale. Predicting long-term production from gas shale reservoirs is a challenging task due to changes in effective stress and permeability during gas production. Unlike coal, the variation of sorbing gas permeability with pore pressure in shale does not always feature a biphasic trend under a constant confining pressure. The present contribution demonstrates that the biphasic dependence of permeability on pore pressure depends on a number of physical and geometrical factors, each with a distinct impact on gas permeability. This includes pore size, adsorption isotherm, and the variation of gas viscosity with pore pressure.

Download or read book Modeling and Simulation of the Pore scale Multiphase Fluid Transport in Shale Reservoirs written by Gorakh Pawar and published by . This book was released on 2016 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Unconventional Reservoir Geomechanics written by Mark D. Zoback and published by Cambridge University Press. This book was released on 2019-05-16 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of the key geologic, geomechanical and engineering principles that govern the development of unconventional oil and gas reservoirs. Covering hydrocarbon-bearing formations, horizontal drilling, reservoir seismology and environmental impacts, this is an invaluable resource for geologists, geophysicists and reservoir engineers.

Download or read book Fundamentals of Gas Shale Reservoirs written by Reza Rezaee and published by John Wiley & Sons. This book was released on 2015-07-01 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides comprehensive information about the key exploration, development and optimization concepts required for gas shale reservoirs Includes statistics about gas shale resources and countries that have shale gas potential Addresses the challenges that oil and gas industries may confront for gas shale reservoir exploration and development Introduces petrophysical analysis, rock physics, geomechanics and passive seismic methods for gas shale plays Details shale gas environmental issues and challenges, economic consideration for gas shale reservoirs Includes case studies of major producing gas shale formations

Download or read book Multi mechanistic Transport Behavior of Multi phase Fluids in Unsaturated Reservoir Rocks written by Ang Liu and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A mechanism-based isotherm model was also proposed to estimate the water vapor uptake at various relative humidities, which was well validated with the DVS results. The validated isotherm model of sorption is further used to derive the isosteric heat of water vapor sorption. The pore specific surface area of coal is not the determining parameter that controls water vapor sorption at least during the primary adsorption stage. Oxygen containing degree dominates the primary adsorption, and togethering with the cumulative pore volume determine the secondary adsorption. Higher temperature has limited effects on primary adsorption process. The isosteric heat of water adsorption decreases as water vapor uptake increases, which was found to be close to the latent heat of bulk water condensation at higher relative humidity. The results confirmed that the primary adsorption is controlled by the stronger bonding energy while the interaction energy between water molecules during secondary adsorption stage is relatively weak. However, the thermodynamics of coal-water interactions are complicated since internal bonding interactions within the coal are disrupted at the same time as new bonding interactions take place with the water molecules. Coal has a shrinkage/swelling colloidal structure with moisture loss/gain and it exhibits collapse behavior with some collapses irreversible as a function of relative humidity, which plays a significant role in determining moisture retention. Following the fourth question, the fifth one was answered in Chapter 6, a mechanism-based isotherm model was proposed to estimate the water vapor uptake at various relative humidity, which implicitly considered both monolayer adsorption, multilayer adsorption and capillary condensation. The analytical models for quantifying the stage-based diffusion coefficients as well as apparent diffusion coefficients over the entire range interval of relative humidity were proposed and well validated. The contributions of different diffusion regimes to the total mass flow were discussed. At the first region, both free water vapor diffusion and surface diffusion of water vapor molecules in adsorbed phase contribute to the total mass flow, while the apparent diffusion at this stage is dominated by latter flow regime; during the second region, the contribution of free water vapor flow to the apparent flow can be neglected and the mass transfer at this region is still dominated by the surface flow; upon reaching the critical relative humidity, the flow in capillary condensation will dominate the total mass flow. Roof instability is a pervasive hazard that may cause of injuries and fatalities in underground coal mines. Variations in humidity and the duration of roof exposure are known to significantly influence the condition of shale roof strata. For the application of mine roof stability evaluation with considering water vapor effects, the sixth question was studied in Chapter 7, the observed variation in frequency of roof falls can be accounted for by seasonal changes in humidity. Moisture-sensitive shales that absorb humidity and swell can deteriorate over time and trigger skin failure and roof falls. This chapter reports on an approach to systematically develop a mechanism-based framework for modeling the mathematical representation for the coupled water vapor flow, elastic deformation and damage evolution behavior in shale roof and coal pillar. We developed a user-friendly software package, termed as Time-Dependent Rock-Fluid-Geomechanics Model (TD-RFG Model), to evaluate time-dependent rock structure dynamics. The software package implicitly considers the coupled effects of elastic deformation field, transient fluid transport field and discontinuous damage field. The interactions across these three fields are analyzed and modeled through TD-RFG. The established TD-RFG platform provides a pathway for multi-field and time-dependent rock structure stability assessment. A case study was reported for shaly roof stability analysis in Illinois basin. Finally, the main findings from above chapters are expected to be understood to answer the seventh question in Chapter 8. This chapter provides a systematic modeling analysis to study the gas and water transport behaviors in tight shale reservoir. Both analytical and numerical approaches were implemented for the data predictions and analyses. The critical water saturation determined from the relative permeability curve is considered as the turning point between two gas production stages. During Stage I, the gas and water two-phase flow dominates shale gas production period. After the two-phase flow, the single gas flow and the flow of water in adsorbed phase are dominative to determine the gas and water productivities during Stage II. The proposed permeability ratio model incorporates both the gas and water sorption-induced swelling strains. As continuous reservoir depletion, the drawdown of reservoir dominates the evolution of permeability ratio. The effect of sorption induced matrix shrinkage strain will take the leading role at late production stage. During the initial two-phase flow (Stage I), a sharp gas production was observed due to the free gas and desorbed gas production. After the peak production, the production follows with a decline towards the low level at critical water saturation. During Stage II, the gas production rate is significantly influenced by residual water content controlled by the flow of water in adsorbed phase. In addition, the effects of elastic properties, initial permeability and diffusion time on permeability ratio and gas/water production profiles were discussed. To summarize, the results in Chapter 2 can ultimately provide the approach and data for analyzing the dynamic sorbing gas transport behaviors in sorptive coal. The proposed model frameworks in Chapter 3 and Chapter 4 can be coupled into a coal dynamic permeability model for defining the permeability evolution--which is important for gas production predictions for CBM wells. Further, those results in Chapter 5 and Chapter 6 can provide the approach and data for quantifying and evaluating the water retention and transport behavior. The provided approaches and data, fundamental understandings from Chapter 3, Chapter 4, Chapter 5 and Chapter 6 were used to study the water-vapor retention and suction potential in unsaturated air-water-shale/coal system and define strategies for ground control in Chapter 7, and also provide a first rational method for analyzing the gas/water transport behavior and water retention behavior with potential application of shale gas recovery in Chapter 8.

Download or read book Reservoir Characterization written by Larry Lake and published by Elsevier. This book was released on 2012-12-02 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reservoir Characterization is a collection of papers presented at the Reservoir Characterization Technical Conference, held at the Westin Hotel-Galleria in Dallas on April 29-May 1, 1985. Conference held April 29-May 1, 1985, at the Westin Hotel—Galleria in Dallas. The conference was sponsored by the National Institute for Petroleum and Energy Research, Bartlesville, Oklahoma. Reservoir characterization is a process for quantitatively assigning reservoir properties, recognizing geologic information and uncertainties in spatial variability. This book contains 19 chapters, and begins with the geological characterization of sandstone reservoir, followed by the geological prediction of shale distribution within the Prudhoe Bay field. The subsequent chapters are devoted to determination of reservoir properties, such as porosity, mineral occurrence, and permeability variation estimation. The discussion then shifts to the utility of a Bayesian-type formalism to delineate qualitative ""soft"" information and expert interpretation of reservoir description data. This topic is followed by papers concerning reservoir simulation, parameter assignment, and method of calculation of wetting phase relative permeability. This text also deals with the role of discontinuous vertical flow barriers in reservoir engineering. The last chapters focus on the effect of reservoir heterogeneity on oil reservoir. Petroleum engineers, scientists, and researchers will find this book of great value.

Download or read book Poromechanics written by Olivier Coussy and published by John Wiley & Sons. This book was released on 2004-03-05 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling and predicting how porous media deform when subjected to external actions and physical phenomena, including the effect of saturating fluids, are of importance to the understanding of geophysics and civil engineering (including soil and rock mechanics and petroleum engineering), as well as in newer areas such as biomechanics and agricultural engineering. Starting from the highly successful First Edition, Coussy has completely re-written Mechanics of Porous Continua/Poromechanics to include: New material for: Partially saturated porous media Reactive porous media Macroscopic electrical effects A single theoretical framework to the subject to explain the interdisciplinary nature of the subject Exercises at the end of each chapter to aid understanding The unified approach taken by this text makes it a valuable addition to the bookshelf of every PhD student and researcher in civil engineering, petroleum engineering, geophysics, biomechanics and material science.

Download or read book Lattice Boltzmann Modeling written by Michael C. Sukop and published by Springer Science & Business Media. This book was released on 2007-04-05 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is a basic introduction to Lattice Boltzmann models that emphasizes intuition and simplistic conceptualization of processes, while avoiding the complex mathematics that underlies LB models. The model is viewed from a particle perspective where collisions, streaming, and particle-particle/particle-surface interactions constitute the entire conceptual framework. Beginners and those whose interest is in model application over detailed mathematics will find this a powerful 'quick start' guide. Example simulations, exercises, and computer codes are included.

Download or read book Advancements of Phase Behavior and Fluid Transport in Petroleum Reservoirs written by Xiaohu Dong and published by Frontiers Media SA. This book was released on 2022-06-30 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrophysical Characterization and Fluids Transport in Unconventional Reservoirs written by Jianchao Cai and published by Elsevier. This book was released on 2019-01-24 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Petrophysical Characterization and Fluids Transport in Unconventional Reservoirs presents a comprehensive look at these new methods and technologies for the petrophysical characterization of unconventional reservoirs, including recent theoretical advances and modeling on fluids transport in unconventional reservoirs. The book is a valuable tool for geoscientists and engineers working in academia and industry. Many novel technologies and approaches, including petrophysics, multi-scale modelling, rock reconstruction and upscaling approaches are discussed, along with the challenge of the development of unconventional reservoirs and the mechanism of multi-phase/multi-scale flow and transport in these structures. Includes both practical and theoretical research for the characterization of unconventional reservoirs Covers the basic approaches and mechanisms for enhanced recovery techniques in unconventional reservoirs Presents the latest research in the fluid transport processes in unconventional reservoirs