Fluid Flow in Fractured Porous Media

The fluid flow in fracture porous media plays a significant role in the assessment of deep underground reservoirs, such as through CO2 sequestration, enhanced oil recovery, and geothermal energy development. Many methods have been employed—from laboratory experimentation to theoretical analysis and...

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Autori principali:	Liu, Richeng, Jiang, Yujing
Natura:	Online
Lingua:	inglese
Pubblicazione:	MDPI - Multidisciplinary Digital Publishing Institute 2021
Soggetti:	TA1-2040 T1-995 deformation feature minerals microstructure mixing permeability gas concentration water–rock interaction loose gangue backfill material unified pipe-network method fracture roof-cutting resistance crack similar-material movable fluid gob-side entry retaining (GER) rock-soil mechanics bed separation orthogonal tests charge separation water soaked height fluid flow in reclaimed soil laboratory experiment longwall mining grading broken gangue MIP elastic modulus effective stress permeability coefficient mixer naturally fracture SEM microstructure characteristics artificial joint rock fractured rock strata movement conservative solute particle velocity dry-wet cycles hydraulic fractures numerical calculation mechanical behaviors normalized conductivity-influence function fractured porous rock mass PPCZ segmented grouting non-aqueous phase liquid intelligent torque rheometer numerical analysis temperature unsaturated soil uniaxial compressive strength mine shaft coalbed methane (CBM) nonlinear flow in fractured porous media similar simulation forecasting tight sandstones oriented perforation hydro-mechanical coupling constant normal stiffness conditions cohesive soils layered progressive grouting chemical grouts grain size of sand Darcy’s law soft coal masses hydro-power cyclic heating and cooling cohesive element method cement-based paste discharge tectonically deformed coal split grouting fault water inrush filtration effects T-stress particle flow modeling new cementitious material strength stabilization fractured porous medium brine concentration initial water contained in sand XRD fracture criteria hydraulic conductivity roadway deformation backfill mining adsorption/desorption properties pore pressure roughness cement–silicate grout compressive stress discrete element method dynamic characteristics strain-based percolation model thermal-hydrological-chemical interactions pore distribution characteristics transversely isotropic rocks nitric acid modification disaster-causing mechanism CH4 seepage crack distribution characteristics micro-CT relief excavation Darcy flow hydraulic fracturing mixed-form formulation propagation scanning electron microscope (SEM) images propagation pattern consolidation process rheological deformation gas adsorption soft filling medium ground pressure orthogonal ratio test rock fracture coal seams high-steep slope interface orthogonal test stress interference physical and mechanical parameters fracture propagation fluid–solid coupling theory coupling model surface characteristics numerical manifold method gas lignite water inrush prevention coupled THM model hard and thick magmatic rocks Ordos Basin porosity damage mechanics seepage degradation mechanism high temperature visualization system bentonite-sand mixtures contamination conductivity-influence function water-rock interaction deterioration seepage pressure glutenite adhesion efficiency mechanical behavior transition bedding plane orientation n/a enhanced gas recovery debris-resisting barriers reinforcement mechanism on-site monitoring geophysical prospecting cyclic wetting-drying scoops3D semi-analytical solution enhanced permeability management period seepage control deformation Yellow River Embankment impeded drainage boundary rheological test circular closed reservoir grout penetration viscoelastic fluid coal-like material paste-like slurry floor failure depth supercritical CO2 gravel numerical model fractal gas-bearing coal shear-flow coupled test rheological limit strain CO2 flooding flotation goaf slope stability damage coal and gas outburst hydraulic fracture anisotropy high-order effluents FLAC limestone roof sandstone TG/DTG Xinjiang two-phase flow model experiment coal particle volumetric strain failure mode land reclamation sandstone and mudstone particles contiguous seams CO2 geological storage numerical simulation geogrid stress relief optimum proportioning roadside backfill body (RBB) pervious concrete mudstone hydraulic fracture network grouted sand fractal pore characteristics refraction law segmented rheological model ductile failure heterogeneity flow law fracture closure coal measures sandstone tight sandstone gas reservoirs gob behaviors water-dripping roadway creep characteristics internal erosion warning levels of fault water inrush hydraulic aperture bolt support discontinuous natural fracture microscopic morphology critical hydraulic gradient mixed mode fracture resistance differential settlement alternate strata finite element method crushing ratio chloride glauberite cavern for storing oil &amp macroscopic mechanical behaviors collision angle adsorption performance failure mechanism mechanical properties transmissivity damage evolution gas fracturing multitude parameters deviatoric stress Jiaohe coal soil properties acoustic emission pore structure grouting experiment concrete confining pressures green mining gas drainage fluid viscosity compression deformation Unsaturation adsorption–desorption seepage-creep constitutive model soil particle size Pseudo Steady-State (PPS) constant soil–structure interface debris flow fracture grouting initial settlement position regression equation electrical potential secondary fracture surrounding rock solid backfill coal mining time variation excess pore-pressures finite-conductivity fracture permeability characteristics rainfall-unstable soil coupling mechanism(R-USCM) shaft lining thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TB Technology: general issues::TBX History of engineering and technology
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Riassunto:	The fluid flow in fracture porous media plays a significant role in the assessment of deep underground reservoirs, such as through CO2 sequestration, enhanced oil recovery, and geothermal energy development. Many methods have been employed—from laboratory experimentation to theoretical analysis and numerical simulations—and allowed for many useful conclusions. This Special Issue aims to report on the current advances related to this topic. This collection of 58 papers represents a wide variety of topics, including on granite permeability investigation, grouting, coal mining, roadway, and concrete, to name but a few. We sincerely hope that the papers published in this Special Issue will be an invaluable resource for our readers.

Fluid Flow in Fractured Porous Media

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