..., t = 1 s, wedge angles of 1° and 2° increased by 16% and 29%. However, with the increase of it, the congestion of the proppant may also occur, and there is a critical angle. The greater the tortuosity, the greater the kinetic energy loss of particles and the advancing angle of the dune. Compared...

... of experiments. Through massive experiments, Huque et al. (2022) believed that fluid velocity and cuttings size were the two most key parameters for cuttings transport efficiency in an inclined well. annular pressure drilling particle geologist directional drilling fluid dynamics drilling operation...

... unconventional reservoir formations. Horizontal drilling increases the wellbore length exposed to reservoir mass. Hydraulic fracturing enhances production by creating fractures and sustaining their opening using solid particles (called proppants) such that the contact area between producing rock mass and fluid...

... exploration. Based on discrete particle theory and contact constitutive relation, a 3D model of wellbore stability of broken formation is established, and the influence of various engineering geological factors on wellbore stability is evaluated. The study reveals that wellbore instability is primarily caused...

... and materials drilling fluid selection and formulation climate change cement formulation drilling fluid chemistry concentration viscosifier concentration evaluation cement slurry journal utilization viscosifier drilling fluid property slurry plastic viscosity cement mixture particle cement...

..., and three-point bending tests. A participating team from Montana Tech and the University of Washington – Tacoma employed multiple methods including the distinct element method (DEM) using Itasca's Particle Flow Code (PFC3D) to simulate the experiments (Johnston, 2023). Although the traditional bonded...

... fractions of binary mixtures. Utilizing a particle flow code, we construct digital rock samples consisting of rigid grain assemblage and a flat joint contact model governing grain-to-grain contacts. Three digital rocks were first constructed: matrix, stiff material, and soft material. The stiff and soft...

... fracturing fluids. Then, Liu and Sharma (2005) presented an experimental study to investigate the impact of fracture width and fluid rheology on proppant transportation. Fernández et al. (2015) showed the final proppant placement under different pumping rates and particle sizes by a narrow planar wedge...

... high pressure and high temperature to examine their effect on the oil-well cement properties such as compressive strength, viscosity, permeability, and particles settling. The findings demonstrated a significant enhancement in oil-well cement properties with the addition of perlite. Integrating perlite...

... coal bed methane fracturing materials geological subdiscipline particle geology proppant hydraulic fracturing reservoir characterization clastic rock complex reservoir fracture propagation mechanism equation simulation fracture propagation hydraulic fracture propagation china university...

... promise, a thorough comprehension of the underlying mechanisms remains crucial. This work presents a coupled simulator that integrates a PKN-type fracturing model with a particle transport model to address the challenges of uneven fracture propagation in unconventional reservoirs. By combining nonlocal...

... rock mechanic proportion defect particle magnitude experiment strength quartz numerical simulation boundary ARMA 24 0106 Thermal Damage in Crystalline Rocks: The Role of Heterogeneity in Mechanical Performance and Fracture Mechanisms Yike Dang and Zheng Yang Xi an Jiaotong university, Xi...

... can improve the seepage conditions of reservoir and achieve the purpose of increasing production, which is recognized as an efficient horizontal well completion technology (Huang et al., 2017,Li and Wu,2022). During the operation, a large number of high-velocity particles continuously wash and erode...

... numerical simulations (Corkum et al., 2024). These simulations assessed the behavior of a randomly discontinuous jointed rock mass subjected to a range of isotropic and devia-toric (shear) loading conditions. Particle flow code 3D grain-based models (PFC 3D -GBM) integrated the specific mineral composition...

... fluid fracture geologist proppant proppant flowback mathematics of computing hydraulic fracturing backflow particle proppant backflow fracture roughness coefficient stability table 1 geology fracturing materials perforation numerical simulation variation sphericity 2650 5 ellipsoidal...

... strength particle software rock mechanic strength stability international journal stiffness slope model fracture mechanism dfn ARMA 24 357 A brief description about all the steps related to the development of latticespring-based synthetic rock mass (LS-SRM) for slope stability analysis...

... experiments. Based on numerical methods, this study aims to reveal the influence of confining pressure on mode I fracture of rock. A three-point bending numerical model was established by discrete particle method to monitor the tensile stress concentration zone at the fracture tip and analyze the fracture...

... ABSTRACT: Seasonal weathering cycles such as wet-dry desiccation weathering can alter geomaterial (weak rock to soil) structure, particle arrangement (i.e. fabric), shear strength, 1D compressibility, and other engineering properties. During the drying and rehydration process associated...

... step based on the image segmentation of RGB images, then use the "8-neighborhood method" to obtain the edge coordinates of the mineral particles, and finally fit the edges by the "least-squares method", and then digitally reconstruct the microcosm of the rock chips. Finally, the edges are fitted...

... ABSTRACT: While the conventional Discrete Element Method (DEM) is a popular tool for investigating breakage, it falls short of accurately capturing the natural morphology of particles. Moreover, previously introduced techniques for simulating irregular particles' breakage have simplified...