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Emerging Advances in Petrophysics. Porous Media Characterization and Modeling of Multiphase Flow

Authors: --- --- ---
ISBN: 9783038977940 9783038977957 Year: Pages: 258 DOI: 10.3390/books978-3-03897-795-7 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General) --- Geophysics and Geomagnetism
Added to DOAB on : 2019-04-25 16:37:17
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Abstract

Due to the influence of pore-throat size distribution, pore connectivity, and microscale fractures, the transport, distribution, and residual saturation of fluids in porous media are difficult to characterize. Petrophysical methods in natural porous media have attracted great attention in a variety of fields, especially in the oil and gas industry. A wide range of research studies have been conducted on the characterization of porous media covers and multiphase flow therein. Reliable approaches for characterizing microstructure and multiphase flow in porous media are crucial in many fields, including the characterization of residual water or oil in hydrocarbon reservoirs and the long-term storage of supercritical CO2 in geological formations. This book gathers together 15 recent works to emphasize fundamental innovations in the field and novel applications of petrophysics in unconventional reservoirs, including experimental studies, numerical modeling (fractal approach), and multiphase flow modeling/simulations. The relevant stakeholders of this book are authorities and service companies working in the petroleum, subsurface water resources, air and water pollution, environmental, and biomaterial sectors.

Keywords

Wilkins equation --- non-laminar flow --- turbulence modelling --- porous media --- oil tanker --- temperature drop --- oscillating motion --- numerical simulation --- soil-water characteristic curve --- initial void ratio --- air-entry value --- fractal dimension --- fractal model --- oil properties --- diffusion coefficient --- supercritical CO2 --- Peng-Robinson equation of state (PR EOS) --- CT --- digital rock --- microfractures --- Lattice Boltzmann method --- pore-scale simulations --- tight sandstone --- pore structure --- multifractal --- classification --- Ordos Basin --- loose media --- coal --- porosity --- true density --- bulk density --- overburden pressure --- particle size --- tight conglomerate --- fracture characterization and prediction --- fractal method --- salt rock --- creep --- damage --- fractional derivative --- acoustic emission --- marine gas hydrate --- submarine landslide --- greenhouse gas emission --- lifecycle management --- hazard prevention --- multilayer reservoir --- interlayer interference --- producing degree --- seepage resistance --- wellbore multiphase flow --- inclined angle --- liquid rate --- gas rate --- pressure drawdown model with new coefficients --- base-level cycle --- pore structure --- mouth bar sand body --- Huanghua Depression --- isotopic composition --- methane --- gas hydrate --- South China Sea --- Bakken Formation --- pore structure --- controlling factors --- low-temperature nitrogen adsorption --- petrophysics --- fractal porous media --- unconventional reservoirs --- multiphase flow

Flow and Transport Properties of Unconventional Reservoirs 2018

Authors: --- --- ---
ISBN: 9783039211166 / 9783039211173 Year: Pages: 364 DOI: 10.3390/books978-3-03921-117-3 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-08-28 11:21:27
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Unconventional reservoirs are usually complex and highly heterogeneous, such as shale, coal, and tight sandstone reservoirs. The strong physical and chemical interactions between fluids and pore surfaces lead to the inapplicability of conventional approaches for characterizing fluid flow in these low-porosity and ultralow-permeability reservoir systems. Therefore, new theories and techniques are urgently needed to characterize petrophysical properties, fluid transport, and their relationships at multiple scales for improving production efficiency from unconventional reservoirs. This book presents fundamental innovations gathered from 21 recent works on novel applications of new techniques and theories in unconventional reservoirs, covering the fields of petrophysical characterization, hydraulic fracturing, fluid transport physics, enhanced oil recovery, and geothermal energy. Clearly, the research covered in this book is helpful to understand and master the latest techniques and theories for unconventional reservoirs, which have important practical significance for the economic and effective development of unconventional oil and gas resources.

Keywords

fracturing fluid --- rheology --- chelating agent --- viscosity --- polymer --- fluid-solid interaction --- velocity profile --- the average flow velocity --- flow resistance --- pore network model --- shale gas --- volume fracturing --- finite volume method --- production simulation --- multi-scale flow --- multi-scale fracture --- shale gas reservoir --- fractured well transient productivity --- succession pseudo-steady state (SPSS) method --- complex fracture network --- multi-scale flow --- analysis of influencing factors --- tight sandstones --- spontaneous imbibition --- remaining oil distributions --- imbibition front --- imbibition recovery --- NMR --- slip length --- large density ratio --- contact angle --- pseudo-potential model --- lattice Boltzmann method --- micro-fracture --- dissolved gas --- experimental evaluation --- reservoir depletion --- recovery factor --- tight oil --- Lucaogou Formation --- tight oil --- pore structure --- prediction by NMR logs --- tight oil reservoir --- SRV-fractured horizontal well --- multiporosity and multiscale --- flow regimes --- productivity contribution degree of multimedium --- equilibrium permeability --- non-equilibrium permeability --- matrix–fracture interaction --- effective stress --- coal deformation --- porous media --- non-linear flow --- conformable derivative --- fractal --- hydraulic fracturing --- tight reservoirs --- fracture diversion --- extended finite element method --- fracture network --- gas adsorption capacity --- shale reservoirs --- influential factors --- integrated methods --- sulfonate gemini surfactant --- thickener --- temperature-resistance --- clean fracturing fluid --- low-salinity water flooding --- clay mineral composition --- enhanced oil recovery --- wetting angle --- pH of formation water --- fractional diffusion --- fractal geometry --- analytical model --- shale gas reservoir --- carbonate reservoir --- petrophysical characterization --- pore types --- pore structure --- permeability --- fractal dimension --- reservoir classifications --- deep circulation groundwater --- groundwater flow --- geothermal water --- faults --- isotopes --- shale permeability --- local effect --- global effect --- matrix-fracture interactions --- nanopore --- pore structure --- shale --- tight sandstone --- mudstone --- nitrogen adsorption --- fractal --- enhanced geothermal system --- well-placement optimization --- fracture continuum method --- 0-1 programming --- unconventional reservoirs --- petrophysical characterization --- fluid transport physics

Machining—Recent Advances, Applications and Challenges

Authors: ---
ISBN: 9783039213771 / 9783039213788 Year: Pages: 554 DOI: 10.3390/books978-3-03921-378-8 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 16:10:12
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The Special Issue Machining—Recent Advances, Applications and Challenges is intended as a humble collection of some of the hottest topics in machining. The manufacturing industry is a varying and challenging environment where new advances emerge from one day to another. In recent years, new manufacturing procedures have retained increasing attention from the industrial and scientific community. However, machining still remains the key operation to achieve high productivity and precision for high-added value parts. Continuous research is performed, and new ideas are constantly considered. This Special Issue summarizes selected high-quality papers which were submitted, peer-reviewed, and recommended by experts. It covers some (but not only) of the following topics: High performance operations for difficult-to-cut alloys, wrought and cast materials, light alloys, ceramics, etc.; Cutting tools, grades, substrates and coatings. Wear damage; Advanced cooling in machining: Minimum quantity of lubricant, dry or cryogenics; Modelling, focused on the reduction of risks, the process outcome, and to maintain surface integrity; Vibration problems in machines: Active and passive/predictive methods, sources, diagnosis and avoidance; Influence of machining in new concepts of machine–tool, and machine static and dynamic behaviors; Machinability of new composites, brittle and emerging materials; Assisted machining processes by high-pressure, laser, US, and others; Introduction of new analytics and decision making into machining programming. We wish to thank the reviewers and staff from Materials for their comments, advice, suggestions and invaluable support during the development of this Special Issue.

Keywords

dry-cutting --- concrete --- segmented diamond blade --- topography --- diameter variation --- weight loss --- in situ estimation --- SACE-drilled hole depth --- spark-assisted chemical engraving --- glass machining --- computer vision --- electrochemical discharge machining --- butt weld joint --- fatigue --- crack growth rate --- weld reinforcement --- cooling rate --- artificial neutral network --- cutting parameters --- magnesium alloys --- optimization --- prime machining costs --- surface roughness --- electropulsing --- machinability --- chip compression ratio --- current density --- specific cutting energy --- cutting edge microgeometry --- residual stress --- finite element model --- cutting edge preparation --- Inconel 718 --- stiffness properties --- parameter identification --- connections --- machine tool --- response surface methodology --- design of experiments --- modal testing --- plastic zone --- fracture mechanism --- steel sheet --- cutting process --- Huber–Mises stress --- finite element method --- microscopic analysis --- PVD Ti0.41Al0.59N/Ti0.55Al0.45N coating --- cutting temperature --- Inconel 718 --- cutting tool wear --- secondary adhesion wear --- turning --- machining --- aluminium --- flank super abrasive machining (SAM) --- flank milling --- Inconel® 718 --- roughness --- residual stress --- machine vision --- on-machine monitoring --- tool insert condition --- computer numerical control --- turning machine tools --- multi-beam laser --- heat transfer analysis --- fast simulation --- GPU --- analytic solution --- minimum quantity lubrication --- surface grinding --- multi-objective optimization --- grey relational analysis --- surface topography --- sustainable machining --- Gamma-TiAl --- superalloys --- slight materials --- drilling --- titanium aluminides --- additive manufacturing --- single point incremental sheet forming --- residual stresses --- X-ray diffraction --- ultra-precision machining --- slow tool servo --- surface topography --- simulation --- microlens array --- sinusoidal grid --- Milling stability --- variable pitch --- chatter --- self-excitation --- milling --- ceramics --- ductile machining --- PCD --- corner radius --- material removal rate --- adhesive --- machining --- modelling --- dry --- CFRP/UNS A92024 --- induction assisted milling --- tool wear --- taguchi method --- cutting tool --- machining temperatures at two deformation zones --- force–temperature correlation through analytical modeling --- high computational efficiency --- real-time prediction --- hybrid stacks drilling --- minimum quantity lubrication --- hole quality --- tool wear --- WEDM --- EN 31 steel --- surface roughness --- fractal dimension --- ANN --- GA --- cryogenic machining --- cutting tool --- cutting geometry --- titanium --- power consumption --- material-removal rate --- specific energy consumption --- grain density --- modeling --- shape memory alloy --- superelastic nitinol --- WEDM --- heat transfer search algorithm --- DSC test --- shape memory effect --- dish angle --- trochoidal step --- response surface methodology --- surface roughness --- desirability approach --- tool wear --- trochoidal milling --- titanium alloy --- chip morphology --- thin-wall machining --- chatter --- vibration --- deflection --- damping --- prediction --- workholding --- fixture --- dynamic --- stability --- titanium alloys --- machining --- turning --- machinability --- tool wear --- laser-assisted machining --- Taguchi method --- optimal machining conditions --- machining characteristic --- milling --- the cutting force components --- vibrations --- magnesium alloys --- artificial neural networks

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