... simulation results. In general, there is a tensile heart shaped zone in front of the propagating fracture tip. On the sides there are compressional zones parallel to the fracture. Multiple planar fracture show polarity reversals in horizontal fiber due to interactions between fractures. Strain field/strain...

... are suggested. Artificial Intelligence Upstream Oil & Gas pseudo-3d model multi-layered lithology hydraulic fracturing fracture tip fracture toughness proppant concentration fracturing materials fracturing fluid concentration viscous dissipation fracture lithology tso effect equation...

... determined. A single well simulation study feeding an economic evaluation was then used to study well spacing and yield suggested optimum development spacing. This paper will review all of this work, the results and conclusions, and provide observations of some of the trends. shale gas fracture tip...

... by stress anisotropy. Results also show that Particle Size Distribution (PSD) of wellbore strengthening should be designed in order to seal the fractures close to the mouth and at fracture tip. This will result both in maximizing hoop stress restoration and tip-screening effects. In addition this model...

... implementations of wellbore strengthening methods. wellbore integrity preventive lost circulation method drilling fluid borehole upstream oil & gas pore pressure fracture mouth wellbore design fracture tip fracture toughness fracture propagation fracture in-situ stress equation granular...

... effect and the potential for changing fracture complexity. shale gas stress ratio horizontal shear stress initial fracture hydraulic fracturing fracture tip shmin initial hydraulic fracture spe 147363 fracture system upstream oil & gas natural fracture net pressure parallel...

... fractures that they may be debonded, opened and/or sheared in advance of hydraulic fracture tip arrival, while under other conditions, natural fractures will be unaffected by the hydraulic fracture. Detailed aperture distributions at the intersection between fracture segments shows the potential...

... pressure circulation drilling fluid formulation fracture tip drilling fluid selection and formulation hydraulic fracturing Upstream Oil & Gas concentration borehole application fracture operation drilling margin fpr approach fracture initiation wsm concentration investigation MPSR WSM...

... in the linear solver. Modeling the fracture flow separate from the reservoir flow allows one to account for a dry zone at the fracture tip, and using a fully expanded Jacobian from an implicitly coupled system of equations provides more stability for the solution process. Numerical stability may be critical...

... influences in e.g. patternfloods are not captured. Modeling & Simulation fracture size criterion hydraulic fracturing fracture tip dimension application Injection Rate fracture Hustedt van den Hoek propagation enhanced recovery Upstream Oil & Gas fracture growth simulator...

... viscosity fluid was used in order to provide fracture growth similar to actual field conditions. Fracture growth and its internal fluid pressure were monitored by fixed probes placed normal to the expected plane of propagation. Fracture tip arrivals were captured by the fixed pressure probes and showed...

... simulations shows a very good fit. fracture propagation stress field coupling dikken fracture tip fracture half-length simulator simulation result reservoir simulation reservoir model time step grid propagation fracture fracture shape enhanced recovery grid block reservoir simulator...

... fracture conductivity shear fracture society of petroleum engineers proppant fracture tip fluid pressure wellbore fracture length drillstem/well testing drillstem testing fracture characterization fracturing materials fracturing fluid reservoir characterization obstruction fracture...

... Abstract This paper discusses the use of numerical simulations for predicting the onset and development of fracture tip screenout (TSO). It presents a parametric study for fracture containment to prevent height growth into water boundaries or a gas cap, under conditions that approximately...

... in a process-zone ahead of the fracture tip. The shear failure is caused by large tip stresses (due to tip plasticity) and by pore pressure increase within the process zone. Uncharacteristically large net fracturing pressures (NFP) were encountered for low-efficiency fluids. Generally, the NFP increased...

... extensively modified the original LEFM theory, mainly to allow for the effects of non-linearity at the crack tip, the original assumptions of LEFM still hold true. Failure is by brittle fracture, with no significant plastic deformation of the rock – even at the fracture tip. This assumption is probably valid...

... lower than expected from elastic behaviour. The most dramatic effect of plasticity is that closure is much lower than the confining stress due to strong stress redistribution along the fracture. propagation closure plaster fracture tip hydraulic fracture propagation wellbore pressure...

... and simulators must be modified to account for the pressure profiles expected under radial-flow conditions. halliburton energy service near-wellbore region transverse hydraulic fracture high propagation pressure hydraulic fracture fracture tip stress intensity spe 56598 wellbore pressure profile...

... fracture fracture tip fracture interpretation artificial intelligence experiment arrival time time lapse ultrasonic measurement vertical seismic profile amplitude compressional reflection notch time lapse acquisition geometry shear diffraction fracture characterization compressional...

... net pressure hydraulic fracture spe 36442 fracture toughness resistance fracture propagation upstream oil & gas equation fracture tip fracture tip mechanism fracture growth application chudnovsky mechanism experiment hydraulic fracturing boundary Ll SPE 36442 Society...