Results 21 to 30 of about 5,095,342 (309)

A Review of Simulation Models of Heat Extraction for a Geothermal Reservoir in an Enhanced Geothermal System

open access: yesEnergies, 2022
This paper reviews the heat transfer model for geothermal reservoirs, the fracture network in reservoirs, and the numerical model of hydraulic fracturing.
Xiang Gao   +4 more
doaj   +1 more source

Superposed fracture networks

open access: yesGeological Magazine, 2023
Abstract The concept of superposed fracture networks consisting of different generations, and often types, of fractures that have developed sequentially is discussed. Superposed networks can consist of different types of extension or shear fractures, and each fracture may ...
D.C.P. Peacock   +2 more
openaire   +4 more sources

A numerical method for simulating fluid flow through 3-D fracture networks [PDF]

open access: yes, 2016
Hydraulic property of fractured rock masses is commonly undertaken based on 2-D fracture network models, which are cut planes of the real 3-D models. This simplification would lead to a significant underestimation of fracture network permeability.
Li, Bo   +3 more
core   +1 more source

Numerical Analysis on the Formation of Fracture Network during the Hydraulic Fracturing of Shale with Pre-Existing Fractures

open access: yesEnergies, 2017
In this paper, configurations of pre-existing fractures in cubic rock blocks were investigated and reconstructed for the modeling of experimental hydraulic fracturing.
Jianming He, Zhaobin Zhang, Xiao Li
doaj   +1 more source

New algorithm to simulate fracture network propagation using stationary and moving coordinates in naturally fractured reservoirs

open access: yesEnergy Science & Engineering, 2020
Influenced by natural fractures, fracture networks may be created when hydraulic fractures propagate in naturally fractured reservoirs. Simulating fracture network propagation is crucial to fracture design.
Zhiqiang Li   +6 more
doaj   +1 more source

Effect of a Fracture Liaison Service on the Rate of Subsequent Fracture Among Patients With a Fragility Fracture in the Norwegian Capture the Fracture Initiative (NoFRACT) [PDF]

open access: yes, 2018
Importance: Fragility fracture is a major health issue because of the accompanying morbidity, mortality, and financial cost. Despite the high cost to society and personal cost to affected individuals, secondary fracture prevention is suboptimal in Norway,
Basso, Trude   +19 more
core   +1 more source

Increasing Resolution of Seismic Hazard Mapping on the Example of the North of Middle Russian Highland

open access: yesApplied Sciences, 2021
The standard problem of engineering geophysics, solved for road and house building and other construction types, is in the localization of areas with increased mobility in the upper part of a geological cross-section and in the parameterization of this ...
Igor B. Movchan   +3 more
doaj   +1 more source

Hydraulic fracture propagation in naturally fractured reservoirs: Complex fracture or fracture networks [PDF]

open access: yesJournal of Natural Gas Science and Engineering, 2019
Understanding the behavior of fluid-driven hydraulic fracture in naturally fractured reservoirs is crucial in the development of geothermal energy and unconventional reservoirs. This study presents a fully-coupled numerical model to investigate hydraulic propagation in naturally fractured reservoirs, along with a comprehensive discussion on field ...
openaire   +2 more sources

Causes of scatter in high rate fracture testing of polymers [PDF]

open access: yes, 2013
A method based on the measurement of failure time is being developed by the European Structural Integrity Society to determine high rate fracture toughness of polymers.
Horsfall I.   +3 more
core   +1 more source

Effect of Multiple Flow Pulses on Hydraulic Fracture Network Propagation in Naturally Fractured Volcanic Rock

open access: yesEnergies, 2020
Exploring engineering methods for increasing fracture network complexity is important for the development of unconventional oil and gas reservoirs. In this study, we conducted a series of fracturing experiments on naturally fractured volcanic samples. An
Guangzhi Yang   +5 more
doaj   +1 more source

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