Fracture friction and permeability of ice
WebNov 1, 2024 · 1. Introduction. Hydraulic fracturing treatment is commonly used to enhance permeability and well efficiency of oil and gas reservoirs. Applications of hydraulic fracturing also include cave inducement in mines [1], [2], disposal of wastes in shale [3], [4], rockburst control in deep mining [5], assessment of in situ stresses [6] and energy production from … WebMay 24, 2024 · The pressure depletion behavior and recovery efficiency between two fractures depend on the SRV permeability, spacing, and rock mechanic properties, and pre-existing natural fracture network. In addition, selecting proper modeling techniques is crucial to help us get insight into pressure depletion and recovery efficiency.
Fracture friction and permeability of ice
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WebFractured igneous and metamorphic rocks, and especially fractured volcanic rocks, can be highly permeable, as can limestone that has been dissolved along fractures and bedding planes to create solutional openings. … WebMay 4, 2024 · The friction-permeability experiments are conducted in a triaxial testing apparatus that independently applies normal stress and differential (end-to-end) pore pressure, while the sample is sheared at a prescribed velocity (Figure 5). This allows the concurrent measurement of the evolution of fracture permeability and friction.
WebThe recommended cohesion and friction angle of soil skeleton of the natural samples are proposed. ... Natural gas hydrates are ice-like non-stoichiometric compounds formed by small gas molecules ... Experimental investigation of stress-dependency of relative permeability in rock fractures. Transport Porous Media, 113 (3) (2016), pp. 567-590. WebThis analysis consists of (1) rate-and-state friction response to calculate the frictional parameters from measured data, (2) cubic law representation to estimate permeability, and (3) parametric stress and slip-dependent aperture analysis that reveals the mechanism of evolving permeability.
WebMay 31, 2024 · This content will become publicly available on May 31, 2024. Fracture, Friction, and Permeability of Ice. Water ice Ih exhibits brittle behavior when rapidly loaded. Under tension, it fails via crack nucleation and propagation. Compressive failure is more … WebThe cubic law was found to be valid whether the fracture surfaces were held open or were being closed under stress, and the results are not dependent on rock type. Permeability was uniquely defined by fracture aperture and was independent of the stress history used in these investigations. The effects
WebJan 3, 2024 · The evolution of permeability on fractures and faults during the full earthquake cycle is shown to be sensitive to sealing during the repose phase. We explore the combined effect of static loading followed by fracture reactivation on permeability evolution via slide-hold-slide experiments.
WebMay 13, 2015 · We determine the evolution of frictional strength, strain weakening behavior and permeability in fractures subject to dissolution and precipitation. We establish these relations through slide–hold–slide experiments, with hold times from 10 to 3000 s, on split limestone core, under hydraulically open and closed conditions. Fracture friction and … hiilivetyliuotinWebJames attended St Olave’s Grammar School in London, United Kingdom, and holds a Bachelor of Science with first-class honours in Geophysics and a Master of Science with distinction in Petroleum Engineering, both from Imperial College London. James will begin a Doctor of Philosophy (PhD) degree in Computational Continuum-Fracture-Fluid … hiilivety kaavaWebcan be measured via acoustic waves. The end result is a method to measure permeability evolution via acoustic waves alone.We modeled the effects of fracture spacing, aspect ratio, and pore stiffness on the permeability evolution of an ellipsoid crack under uniaxial stress and varying pore pressure. We found hiilivirtaWebFeb 9, 2024 · The permeability evolution related to the onset of the fracture zone is different for both rocks: almost no enhancement for the Flechtingen sandstone and an increase of more than 2 orders of magnitude for the Odenwald granite. Further shear displacement resulted in a slight increase in permeability. hiilivoimalaitosWebFriction is independent of T and, over the one order of magnitude tested, of average sliding velocity. The sliding behavior is invariably stick slip. Examination of sliding surfaces … hiilivoimalaWebMay 7, 2024 · For example, laboratory measurements of sea-ice permeability have been observed to be several orders of magnitude lower than permeabilities measured in the field (Freitag, Reference Freitag 1999). The effect of a decrease of fracture permeability due to confining pressure is well known in rocks (Walsh, Reference Walsh 1981). hiiliviljelyWebFeb 13, 2024 · As seismicity is controlled by the frictional response of fractures, we explore friction-stability-permeability relationships through the concurrent measurement of frictional and hydraulic properties of artificial fractures in Green River shale (GRS) and Opalinus shale (OPS). hiilivoimalan teho