Results 21 to 30 of about 172,289 (277)

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

, 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
Lister, J.R., Roper, S.M.
core   +1 more source

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

Energy 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, Hongye Gao, Yun Lei, Yongxiang Zheng, Wei Wang   +4 more
doaj   +1 more source

Fracture Propagation Driven by Fluid Outflow from a Low-permeability Aquifer [PDF]

, 2013
Deep saline aquifers are promising geological reservoirs for CO2 sequestration if they do not leak. The absence of leakage is provided by the caprock integrity.
DT Snow, E Detournay, F Cappa, Gennady Yu. Gor, GY Gor, Howard A. Stone, HS Carslaw, J Geertsma, J Smith, J Zhang, Jean H. Prévost, JP Morris, M Iding, M Preisig, O Coussy, P Humez, RH Nilson, S Goodarzi   +17 more
core   +1 more source

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

Geofluids, 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

Understanding fast macroscale fracture from microcrack post mortem patterns [PDF]

, 2011
Dynamic crack propagation drives catastrophic solid failures. In many amorphous brittle materials, sufficiently fast crack growth involves small-scale, high-frequency microcracking damage localized near the crack tip.
Buehler, C. Guerra, D. Bonamy, D. Dalmas, Goldman, J. Scheibert, Livne, Nalla, Persson, Rosakis, Scheibert, Sharon   +11 more
core   +5 more sources

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

Geofluids, 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

Numerical Analysis on the Stability of Hydraulic Fracture Propagation

Energies, 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, Xiao Li, Jianming He, Yanfang Wu, Bo Zhang   +4 more
doaj   +1 more source

Study on the Combined Effect of Inclined Natural Fracture and Water Jet Slot on the Blast-Induced Crack Propagation Law

Shock and Vibration, 2022
For the purpose of uncovering the influence law on the explosion stress wave transmission and blast-induced crack propagation by inclined natural fracture and water jet slot, the influential mechanism for the transmission law of explosion stress wave due
Dengfeng Su, Zizheng Jia, Qiang Zhu, Zhengguo Li, Banghong Chen, Dandan Zheng, Renjun Tian   +6 more
doaj   +1 more source

PyFrac: A planar 3D hydraulic fracture simulator

, 2020
Fluid driven fractures propagate in the upper earth crust either naturally or in response to engineered fluid injections. The quantitative prediction of their evolution is critical in order to better understand their dynamics as well as to optimize their
Lecampion, Brice, Zia, Haseeb
core   +1 more source

Simulation investigation on spatial deflection of multiples fractures of multistage perforation clusters in hydraulic fracturing

Meitan kexue jishu, 2023
The morphology of complex fracture network in hydraulic fracturing engineering in deep tight oil and gas reservoir is a crucial factor affecting oil and gas recovery, and it is necessary to accurately evaluate and optimize the fracture propagation ...
Yongliang WANG, Nana LIU, Hao WANG
doaj   +1 more source