Results 11 to 20 of about 453,822 (206)
Energies, 2023 In the last decade, low-quality unconventional oil and gas resources have become the primary source for domestic oil and gas storage and production, and hydraulic fracturing has become a crucial method for modifying unconventional reservoirs.
Zhe Liu +7 more
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Energies, 2023 A conventional oil and gas well does not have a natural production capacity, which necessitates a hydraulic fracturing operation. The effectiveness of the fracturing directly impacts the economic benefit of a single well.
Yi Zou +5 more
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IEEE Access, 2018 Conventional fracture characterization model for low-permeability tight reservoirs cannot be directly built through data statistical method and simplified strain energy density method under high confining pressures.
Jianwei Feng +3 more
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Vibrated concrete vs. self-compacting concrete: comparison of fracture mechanics properties [PDF]
, 2014 This study focuses on the fracture mechanics aspect of self-compacting concrete, compared to vibrated concrete. The most commonly used experiments to investigate the toughness and cracking behaviour of concrete are the three-point bending test (3PBT) on ...
Boel, Veerle +3 more
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Method for Determining the Fracture Parameters of Fully Graded Dam Concrete
Buildings, 2022 This paper describes a method for determining the initiation and unstable toughness of fully graded concrete of arbitrary specimen size. The method first predicts the initiation and peak loads of concrete specimens of any size, as well as crack length-to-
Xiaofeng Gao +7 more
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Effects of fracture aperture and roughness on hydraulic and mechanical properties of rocks : implication of seismic characterization of fractured reservoirs [PDF]
, 2005 Roughness and aperture are two important characteristic parameters controlling fluid flow in natural joints and fractures. It has been demonstrated by many authors that knowledge of roughness does not directly lead to that of aperture, and aperture ...
Liu, Enru
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工程科学学报, 2022 A centrally cracked Brazilian disk (CCBD) specimen subjected to a pair of diametral compressive forces has been widely used to study mixed-mode I and II fractures of brittle and quasi-brittle materials.
Jian LIU +3 more
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Wedge-Splitting Test on Carbon-Containing Refractories at High Temperatures
Applied Sciences, 2019 The mode I fracture behavior of ordinary refractory materials is usually tested with the wedge-splitting test. At elevated temperatures, the optical displacement measurement is difficult because of the convection in the furnace and possible reactions of ...
Martin Stückelschweiger +3 more
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Multi-parameter fracture mechanics
Frattura ed Integrità Strutturale, 2019 A mixed-mode geometry has been chosen to investigate a crack propagation using the multi-parameter fracture mechanics concept. The so-called Williams’ series expansion is used for the crack-tip stress field approximation. It has been shown that application of the generalized fracture mechanics concept can be crucial for materials with specific fracture
Lucie Malikova +3 more
openaire +3 more sources
High serum osteopontin levels are associated with prevalent fractures and worse lipid profile in post-menopausal women with type 2 diabetes [PDF]
, 2018 Purpose: Patients with type 2 diabetes (T2DM) have increased fracture risk. Osteopontin (OPN) is a protein involved in bone remodeling and inflammation.
Carnevale, V. +9 more
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