... and geological conditions. The study demonstrates that the predicted casing deformations are generally in good agreement with the measurements. The study shows that the casing deformations first occur at the weak/strong rock interfaces after first panel mining and then increase by a small amount at the same...

.... geologist fracture china government hydraulic fracture upstream oil & gas asia government reservoir geomechanics injection rate geology complex reservoir geological subdiscipline specimen interaction interface propagation hydraulic fracture crossing natural fracture criterion experiment...

... acoustic emission (AE) monitoring, and detailed pre- and post-test micro-CT imaging of the samples. It has been used to characterize the strength of interface samples from two NF. The micro-CT imaging of the samples and measured strength clearly show the porous material strength determines the failure...

... intensity l-panel strain energy organic-rich rock united states government reservoir geomechanics seismic potential seismic activity seismic event geological subdiscipline variation available energy h-panel interface discontinuity ess value shear stress seismicity coal seam shear-type...

...) The closer the perforation was to the lithological interface, the easier it was for hydraulic fractures to propagate through the interface. (2) Direct fracturing of thick coal seams and indirect connection of thin coal seams is advantageous for multi-gas co-production. Shortening the perforation length...

... subdiscipline geologist fracture reservoir characterization geology host rock thickness interaction mode fracture united states government semi-circular bend hydraulic fracturing specimen reservoir geomechanics scb sample scb specimen interface natural fracture discontinuity approach angle...

... of this study is to measure the micro-annulus at the casing-cement interface and produce more accurate identification and prediction by exploring the internal structure under high temperature reservoir. The methodology is using experimental and numerical approaches to estimate the potential gap size with direct...

... shallower covers, the measured horizontal displacements within the longwall abutment pillar are one order of magnitude higher than those measured under deep cover. Longwall-induced horizontal displacements occur along weak-to-strong rock interfaces; the sharper the bending stiffness contrast across...

...) and the debonding of the interface between the cement sheath and the formation (Feng et al., 2016). The cement sheath fatigue failure also have a significant impact on the quality of cement and result in wellbore integrity issues, the artificial neural network is used to predict the fatigue failure of the cement...

... on the case of a constant friction coefficient and account for permeability changes associated with fracture opening. We use a fully coupled implicit numerical scheme for the solution of this non-linear hydro-mechanical problem. Notably, the frictional interface behavior is modeled using an elastoplastic...

... geomechanics stress distribution petroleum science climate change khalifeh mechanical property young europe government cement property geothermal well engineering interface temperature increase cement chemistry wellbore integrity reservoir characterization granite-based geopolymer cement...

... fracture simulation interface transition mechanism propagation stress jump heterogeneity hydraulic fracture penetration depth toughness jump ARMA 23-0711 Arrest Mechanisms of Buoyant Hydraulic Fractures Möri, A. and Peruzzo, C. and Lecampion, B. Ecole Polytechnique Fédérale de Lausanne (EPFL...

... . (2009); Ukar et al . (2017, 2019a,b). It is known that these weak interfaces can potentially act as preferential propagation paths, locally altering the fracture propagation direction Gale et al (2018), or even restricting its height Weng et al . (2018); Xu et al . (2019); Celleri and Sánchez (2021...

... researchers have studied the cement displacement process caused by casing eccentricity. However, the wellbore stress distribution that caused by casing eccentricity is seldom studied. In this paper, we used an equivalent perturbed domain solution to calculate the stress on the casing-cement interface. Failure...

..., and flexibility in shape. Through experimentation, the optimal interface was found to be between an aluminum surface roughened by 120 grit sandpaper and cured plaster, which provided consistent strength with a friction angle of 42.2 degrees and cohesion of 0.18 MPa. This work helps validate the concept...

... characterization mpa axial stress geology igneous rock stress memory strain difference granite unload specimen inflection interface cyclic loading lulu cycle peak stress subsequent cycle deformation rate analysis loading cycle ambient condition strain gauge ARMA 23 0288 Work Hardening...

... in boreholes with slightly smaller diameter than the diameter of the retainers, the radial force is generated by the compression of the anchor by the drill wall, ensuring its efficiency by friction in this contact interface. In order to increase the maximum load capacity of Split Sets, some mining companies...

... 2 (Bai et al., 2016; Choi et al., 2013). The sealing integrity of cement sheath consists of two main components: the cement stone sealing ability and the interface sealing ability. Most previous studies focused on the failure analysis of the cement sheath interface (Feng et al., 2017; Gu et al...

... be addressed. upstream oil & gas rock type geologist geology hydraulic fracturing reservoir geomechanics igneous rock subsurface storage experiment united states government calcite geological subdiscipline co 2 vein displacement interface reservoir characterization concentration...

... characterization geologist geology social responsibility reservoir geomechanics hydrogen expansion application interface integrity expansive cement strength transducer reaction porosity experiment engineering poisson cement sample leakage hydrogen storage permeability ARMA 23 746 Assessing...