Results 21 to 30 of about 54,858 (313)

Buoyancy-driven crack propagation: the limit of large fracture toughness [PDF]

open access: yes, 2007
We study steady vertical propagation of a crack filled with buoyant viscous fluid through an elastic solid with large effective fracture toughness. For a crack fed by a constant flux Q, a non-dimensional fracture toughness K=Kc/(3μQm3/2)1/4 describes the
Roper, S.M.   +3 more
core   +1 more source

Injection Rate-Dependent Deflecting Propagation Rule of Hydraulic Fracture: Insights from the Rate-Dependent Fracture Process Zone of Mixed-Mode (I-II) Fracturing

open access: yesGeofluids, 2021
Mixed-mode (I-II) fracturing is a prominent mechanical characteristic of hydraulic fracture (HF) deflecting propagation. At present, understanding the effect of injection rates on HF deflecting propagation remains challenging and restricts the control of
Yuekun Xing, Bingxiang Huang
doaj   +1 more source

Lattice Numerical Simulations of Hydraulic Fracture Propagation and Their Geometry Evolution in Transversely Isotropic Formations

open access: yesFrontiers in Earth Science, 2021
Accurate prediction of the fracture geometry before the operation of a hydraulic fracture (HF) job is important for the treatment design. Simplified planar fracture models, which may be applicable to predict the fracture geometry in homogeneous and ...
Dezhi Qiu   +8 more
doaj   +1 more source

Scaling of fracture response in Over-height Compact Tension tests [PDF]

open access: yes, 2015
An experimental investigation into in-plane scaled Over-height Compact Tension (OCT) [45/90/-45/0]4s carbon/epoxy laminates was carried out to study the scaling of fracture response.
Hallett, Stephen R.   +3 more
core   +1 more source

Experimental and Numerical Investigation on Hydraulic Fracture Propagation Law of Composite Rock Materials considering the Disturbing Stress Effect

open access: yesGeofluids, 2021
The stress disturbance effect will significantly affect the propagation path of hydraulic fractures in the composite rock reservoir. To reveal the influence mechanism of stress disturbance effect on the hydraulic fracture propagation, several groups of ...
Xin Zhang, Yuqi Zhang, Tao Zhang
doaj   +1 more source

Hydraulic Fracture Propagation in Fractured Rock Mass

open access: yesApplied Sciences, 2022
According to fracture mechanics theory, the initial cracking law and wing crack propagation model of compression shear rock cracks subjected to hydraulic pressure and far field stresses are discussed. The results of the theoretical study show that crack initiation strength is inversely related to hydraulic pressure, that hydraulic pressure aggravates ...
Taoying Liu   +6 more
openaire   +2 more sources

Fracture Mechanics Characterization of an AnisotropicGeomaterial [PDF]

open access: yes, 2012
Argillites are considered worldwide as potential host rock for high level radioactive waste given the low permeability and strong adsorption potential.
Cravero, Masantonio   +9 more
core   +1 more source

Exploring the propagation of hydraulic fracture with nonuniform stress based on the block distinct element method

open access: yesEnergy Science & Engineering, 2023
The stress field is a critical factor for fracture propagation in hydraulic fracturing. Attention should be paid to fracture propagation with the nonuniform stress field.
Baoshan Jia   +4 more
doaj   +1 more source

Simulation of Dynamic Interface Fracture Using Spectral Boundary Integral Method [PDF]

open access: yes, 2009
Simulation of three-dimensional dynamic fracture events constitutes one of the most challenging topics in the field of computational mechanics. Spontaneous dynamic fracture along the interface of two elastic solids is of great importance and interest to ...
Harish, Ajay Bangalore
core   +1 more source

Numerical Analysis on the Stability of Hydraulic Fracture Propagation

open access: yesEnergies, 2015
The formation of dense spacing fracture network is crucial to the hydraulic fracturing treatment of unconventional reservoir. However, one difficulty for fracturing treatment is the lack of clear understanding on the nature of fracture complexity created
Zhaobin Zhang   +4 more
doaj   +1 more source

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