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Flow and Transport Properties of Unconventional Reservoirs 2018

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ISBN: 9783039211166 9783039211173 Year: Pages: 364 DOI: 10.3390/books978-3-03921-117-3 Language: English
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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Abstract

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

Development of Unconventional Reservoirs

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ISBN: 9783039285808 / 9783039285815 Year: Pages: 522 DOI: 10.3390/books978-3-03928-581-5 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General)
Added to DOAB on : 2020-06-09 16:38:57
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Abstract

The need for energy is increasing and but the production from conventional reservoirs is declining quickly. This requires an economically and technically feasible source of energy for the coming years. Among some alternative future energy solutions, the most reasonable source is from unconventional reservoirs. As the name “unconventional” implies, different and challenging approaches are required to characterize and develop these resources. This Special Issue covers some of the technical challenges for developing unconventional energy sources from shale gas/oil, tight gas sand, and coalbed methane.

Keywords

CO2 huff-n-puff --- condensate recovery --- shale gas condensate reservoir --- fractured tight reservoir --- stress-dependent permeability --- fracture penetration extent --- theoretical model --- shale gas --- multi-stage fracturing horizontal wells --- well interference --- transient pressure --- numerical analysis --- shale gas --- methane adsorption capacity --- Langmuir volume --- Langmuir pressure --- total organic carbon --- clay content --- coal rank --- petrophysical properties --- coalbed methane --- adsorption capacity --- Niutitang formation --- TOC recovery --- organic pores --- porosity --- pore structure --- unconventional reservoirs --- gravel pack --- sand control --- gradation optimization --- visual experiment --- coal measure gases (coalbed gas --- shale gas --- and tight sand gas) --- co-exploitation --- wellbore stability --- wettability --- zeta potential --- drilling fluid --- adsorption and desorption isotherms --- sorption hysteresis --- medium volatile bituminous coal --- equation of state --- NIST-Refprop --- gas compressibility factors --- original gas in-place --- gas shale --- NMR --- helium porosimetry --- clay bound water --- porosity --- pore size distribution --- low-pressure gas adsorption --- MICP --- tight gas reservoirs --- Klinkenberg slippage theory --- high pressure and low flowrate --- gas permeability measurement --- adsorption --- unconventional reservoirs --- pulse decay test --- unsteady state non-equilibrium sorption --- pseudo-steady-state non-equilibrium sorption --- equilibrium sorption --- capillary number --- initial water saturation --- capillary trapping --- residual gas distribution --- nuclear magnetic resonance --- ultra-deep well --- shock loads --- perforated string --- safety analysis --- optimization measures --- convolutional neural network --- well testing --- tight reservoirs --- pressure derivative --- automatic classification --- air flooding --- catalyst-activated low temperature oxidation --- oxidation reaction pathway --- catalytic oxidation characteristics --- Changqing tight oil --- organic-rich shale --- gas adsorption and desorption --- sorption hysteresis --- Langmuir model --- compositional 3D --- dual-porosity system --- total organic carbon (TOC) --- Computer Modelling Group (CMG) --- GEM® --- coalbed methane --- gas content --- diffusion coefficient --- reservoir simulation --- deepwater well --- perforation safety --- peak pressure --- numerical model --- orthogonal test --- limestone and calcareous mudstone interbedding --- gas content --- source-mixed gas --- fractures --- northern Guizhou --- water imbibition --- oil migration --- tight oil reservoirs --- nuclear magnetic resonance --- semi-analytical model --- reorientation fractures --- horizontal well --- tight reservoir --- flow behavior --- tight gas sand --- unconventional --- porosity–permeability --- hydraulic flow units --- electrical resistivity --- NMR --- micro-CT image --- petrophysics --- petrography --- carbon dioxide sequestration --- caprock integrity --- shale alteration --- rock-water-CO2 interaction --- lab tests under reservoir condition --- fractured-vuggy reservoirs --- physical model --- water flooding effect --- injection and production pattern --- gravity differentiation --- flow channel

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