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Keywords: fracture toughness
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Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-1101
... of changes in volume is often associated with formation of fracture surfaces as new minerals form. Thus, fracture properties such as tensile strength or fracture toughness are of interest in analyses of volumetric deformation during mineral replacement. Cores extracted from Oman ophiolite were used...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0958
... ABSTRACT: Artificial specimens are created with similar materials. The fracture mechanical parameters are studied by three-point bending test and digital image method. The shale-sand interface's tensile stiffness ( K s ) and fracture toughness ( K IC ) were tested. The research findings...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0291
... ABSTRACT: This paper mainly studied the effects of eight parameters including Young's modulus, formation brittleness, internal friction angle, fracture energy, fracture toughness, porosity, permeability, and clay content on the double sweet spots of shale oil reservoirs. We calculated...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0349
... tensile strength and actual fracture toughness of the rock. The mode I fracture of rock under confining pressure needs to overcome the confining pressure and rock cohesion resistance. The compaction effect of confining pressure on the rock will strengthen the fracture performance of the rock itself...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0487
... of rocks in PHF is crucial for optimizing fracturing construction parameters. In this paper, a series of fatigue fracture toughness experiments including monotonic loading, constant amplitude with constant mean stress(CACMS) cyclic loading and constant amplitude with increasing mean stress(CAIMS) cyclic...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0572
... were employed for the direct casting of notched beam specimens, which were subsequently subjected to three-point bending tests after the curing process. The study revealed a mode I fracture toughness of 434.88 kNm^1/2, a crack tip opening displacement (CTOD) of 90.28 μm, and the characteristics...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0577
... olivine carbonation carbonation reaction crystallization pressure investigation propagation precipitation reaction-induced co 2 carbon mineralization fracture toughness peridotite ARMA 24 0577 Crystallization Pressure and Reaction-Induced Cracking in Olivine Carbonation: Insights from Etch...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0571
... temperatures over an eleven-day period. The semi-circular specimens were prepared by cutting the cured samples into notched disks, and a series of three-point bending tests were conducted. We delved into the examination of mode I fracture toughness and its sensitivity to the percentage of metakaolin through...
Proceedings Papers

Paper presented at the 58th U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2024
Paper Number: ARMA-2024-0560
... bed methane geological subdiscipline hydraulic fracture tensile strength reservoir characterization compressive strength viscosity junggar basin toughness fracture penetration rock type fracture toughness reservoir geomechanics fracture strength experiment fracture morphology ARMA...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0602
... international journal different rock type mining science zhang rock mechanic tensile crack speed fracture toughness upstream oil & gas hydraulic fracturing geological subdiscipline crack propagation velocity gauge crack speed wang engfracmech ARMA 23 0602 How Fast Can Tensile Cracks...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0742
... applications. If the confining stress variation between rock layers represents one of the main reasons for fracture containment at depth, a contrast of fracture toughness can also lead to fracture containment. Fracture toughness contrasts are presents at different scales. They are due to lithological changes...
Proceedings Papers

Paper presented at the 57th U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2023
Paper Number: ARMA-2023-0844
... of 14% was prepared, and using a cylindrical mold, specimens were cast and then cured at 70 °C. Mode II fracture toughness, the evolution of the crack tip opening and sliding displacement and the shear and minimum principal strain behavior were examined through strain mapping using the Digital Image...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0192
... additional parameters, namely the critical fracture energy per unit of area ( G c ) and length scale parameter ( ℓ ). G c describes the energy consumed to form the unit length of fractures, which is related to fracture toughness ( K c ). The fracture toughness can be easily captured by ISRM suggested...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0541
... propagation journal upstream oil & gas drillstring design concentration coefficient formula directional drilling coefficient wob fracture accident extended-reach drilling engineering pipe torque equation relationship mpa china university fracture toughness diameter ARMA 22 0541...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0601
... that the resistance to fracturing, expressed in the dislocation model by the required force and in the FEM by an effective fracture toughness that increases with fracture extension tending to asymptotic value, depends strongly on the fracture propagation direction. A dominant parameter that quantifies these effects...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-0817
... accentuating Mode I fracture toughness over viscous fluid effects, compared to the field. Subsequently, a set of laboratory parameters is proposed at a higher gelatin concentration (18-to-19%-by-weight), yielding improved scalability against field operations, minimizing the difference between the lab-scale...
Proceedings Papers

Paper presented at the 56th U.S. Rock Mechanics/Geomechanics Symposium, June 26–29, 2022
Paper Number: ARMA-2022-2135
... at an appropriate resolution is the key for successful prediction fracture growth and other crucial treatment parameters. Our focus is on studying several strategies to average fracture toughness and assess their suitability for use in advanced computational methods such as FE/BEM. In practice the well log...

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