... ABSTRACT In this paper, a distributed fiber-optic monitoring system is used to finely portray the effect of gravel on crack extension during a true triaxial physical simulation experiment. The experimental results show that under the control of stress difference, the obstruction effect...

... of the three principal incremental strains: maximum extensional principal strain (d1), the intermediate principal strain (d2), and maximum shortening principal strain (d3), where d1>d2>d3 (extension reckoned positive). 2. A scalar parameter D, which is formed by a ratio of the differences in the principal...

... to postpone the bottom-water-coning effect by meticulous hydraulic fracturing design and operation parameters optimization. Temporary plugging could be a potential solution for controlling hydraulic fracture extension in the vertical direction. This paper proposed a basal water-avoiding hydraulic fracturing...

...) compression, axisymmetric (conventional triaxial) extension, and multiaxial strength tests. The data are fitted to linear and nonlinear failure criteria: Paul-Mohr-Coulomb (PMC), a generalized linear criterion containing all three principal stresses; Hoek-Brown, a popular nonlinear criterion containing major...

...). upstream oil & gas production logging complex reservoir fracture reservoir surveillance fracture propagation production monitoring fiber horizontal stress fracture simulator acoustic sensing spe journal displacement extension hydraulic fracturing production control fracture geometry...

... propagation extension lateral boundary mpa interface arson evolution matrix ARMA 22-0324 Numerical implementation of a cohesive zone element coupled with continuum damage mechanics volume elements Haozhou He and Chloé Arson Georgia Institute of Technology, Atlanta, Georgia, United States Copyright...

... are investigated along different stress paths, respectively with constant mean stress (CMS) and constant radial stress (CRS). For CMS testing, a cycle of triaxial compression and extension is performed. It is shown that P-wave velocity gradually reduced at the stage of triaxial compression and reversing the stress...

... for the final extension of axisymmetric hydraulic fractures created by a local pressure pulse in the wellbore. Analytic equations explicitly specify the relationship between mechanical properties of the rock formation, in-situ stress conditions, parameters of the wellbore energy source generating the pressure...

... the horizontal beddings restrict the vertical extension of hydraulic fractures? Whether the vertical distance from horizontal well to the high quality shale intended zone affects production? ARMA 19 1846 Influence of Horizontal Bedding on Vertical Extension of Hydraulic Fracture and Stimulation Performance...

.... They summarized three based situations: arresting, crossing and diversion along the natural fracture. To make the criterion suitable for the fractures in 3D, Wan et al. (2018) put forward the 3D intersection criterion, where the bypassing and vertical extension were mainly discussed. Cheng et al. (2014) studied...

... crack length brittleness index Reservoir Characterization hydraulic fracturing injection pressure crack growth enhancement extension principal stress fracture permeability evolution Magnitude deformation in-situ stress propagation 1. BACKGROUND United States has benefited economically...

... of fracture extension, arguing that fracture formation mainly depends on the stress state of the wellbore; the factors influencing the stress state include crustal stress, pore pressure, borehole liquid pressure, and the mechanical and physical properties of percolation flow. Veatch, 1983 investigated...

... behavior Rock mechanics data mining Martin brittleness index rock mass strength rock mass Kaiser international journal reservoir geomechanics strength mobilization excavation extension equivalent plastic strain Indicator plastic strain field stress Diederich Hajiabdolmajid 1...

... Characterization Upstream Oil & Gas diameter extension main fracture fracture Artificial Intelligence specimen 2 acid fluid specimen hydraulic fracture horizontal principal stress propagation acid solution principal stress maximum horizontal fracture geometry 1. INTRODUCTION The carbonate...

... consider extension failure modes (Gale et al., 2004; Esterhuizen, 2012; Chugh and Sinha, 2015). One exception is Seedsman (2011) who used a brittle-failure criterion that identifies a reduced strength extensional zone, to provide input for the design roof support in Australian coal mines. Fig. 6. Extension...

... variation of the Bragg reflected light. We describe the fracture propagation process of hydraulic fracturing accurately through this dynamic monitoring. Then we found that fracture width does not increase monotonously with hydraulic fracture extension in the process of hydraulic fracturing. It fluctuates...

... the wellbore wall than the linear-elastic perfectly plastic model. When the collapse criterion is defined as an extension of the failure zone that does not trigger a drastic reduction in the shear strength around the well, the proposed approach estimates a possible drilling window for a horizontal well, which...

... material constants, such as one stress intercept and two friction angles, one for compression ? c and one for extension ? e , are readily identified. PMC failure criterion is reviewed and data from a series of conventional triaxial compression and extension experiments on Indiana limestone...

... friction between the drillstring and the wall of the borehole causes drillstring drag and rotational torque. Over the years, many researchers have used different additives in WBM fluids to reduce the torque and drag of the drill-string in order to maximize extension of the well length in extended-reach...

... extension on the size and shape of process zone are investigated. Introduction Fracture process zone (FPZ) is a region around a crack tip in quasi-brittle materials that is made of several damaged points and micro-cracks. This nonlinear region causes deviation of the material behavior from...