Fracture tortuosity
WebMay 1, 2024 · A modified model of the frictional resistance coefficient, considering fracture tortuosity and roughness, was established, which clearly expresses the law that with the increase in fracture ... WebMar 10, 2015 · We thus developed and tested a modified LCL (MLCL) which takes into account local tortuosity and roughness, and works across a low range of local Reynolds Numbers. The MLCL is based on (1) modifying the aperture field by orienting it with the flow direction and (2) correcting for local roughness changes associated with local flow …
Fracture tortuosity
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WebApr 11, 2024 · The increase of Al content brings out the reduction of crack tip plastic zone and crack path tortuosity, which makes a significant decrease in fracture toughness. Moreover, the fracture toughness predicted based on tensile properties is in agreement with that obtained by experiment, and the fracture toughness of two alloys is dominated by ... WebMar 26, 2024 · Near-wellbore fracture tortuosity has important impacts on the productivity of fractured oil and gas wells and the injectivity of CO2 or solids disposal injectors. Previous models for simulating near-wellbore fracture tortuosity usually assume fracture growth in linear-elastic media, without considering the effects of porous features of the rock. In this …
WebSep 1, 2024 · The hydraulic properties of fractures are greatly affected by the stress. Knowing the fluid flow behavior of fractures is of great importance to underground engineering construction and environmental safety. The main purpose of this paper is to study the fluid flow characteristics of rough fractures under different stress states. First, … WebApr 12, 2024 · Results show that the variations of fracture aperture increase with the aperture and tortuosity, and the influence of tortuosity (increased by 47.97%) is …
WebMay 1, 1999 · An example of fracture tortuosity would be the initiation of longitudinal fractures from a horizontal well, as proven by the fracturing … WebJan 5, 2024 · The conductivity, tortuosity, surface area and volume of fractures can be significantly enhanced by 314.4%, 5.9%, 109.0% and 53.4%, respectively, while the fracture aperture deceased by 21.8% because more small-scale fractures were activated.
WebFractures are ubiquitous in geological sequences, and play an important role in the movement of fluids in the earth's crust, particularly in fields such as … charlene abraham npWebSep 1, 2010 · Summary. A model is developed for petrophysical evaluation of naturally fractured reservoirs where dip of fractures ranges between zero and 90°, and where … harry patterson authorWebOct 6, 2024 · Fractured seepage is an important factor affecting the interface stability of rock mass. It is closely related to fracture properties and hydraulic conditions. In this study, the law of seepage in a single fracture surface based on modified cubic law is described, and the three-dimensional discrete element method is used to simulate the dam foundation … harry patterson obituaryWebTortuosity is a macroscopic feature defined as the ratio of actual flow path length over a straight-line distance. Normally, the actual flow field can be obtained through either direct … charlene abeytaWebAug 7, 2024 · The secondary fracture spacing/aperture has a great influence on flow behavior of multifractured horizontal wells. In this paper, the effects of secondary fracture spacing/aperture distribution on porosity/permeability of the stimulated reservoir volume are described. A new fractal composite flow model was proposed, which can … charlene a carruthersWebFeb 12, 2024 · As the main channel for gas migration in a reservoir, fracture length is unevenly distributed, with varying degrees of tortuosity and a complex structural distribution. The connection state of the coal pore-throat network will directly affect oil and gas recovery [ 1 , 2 , 3 ]. charlene abrahamsWebApr 8, 2024 · The role of disorderliness in mechanical performance for natural cellular materials has not been fully understood yet. Existing research has suggested that introducing disorderliness to periodic cellular materials can cause a reduction in stiffness, strength, ductility, and fracture toughness (Romijn and Fleck, 2007, Chen et al., 1999, … charlene abrams