Results 31 to 40 of about 75,520 (349)

Overcoming challenges in the classification of deep geothermal potential [PDF]

, 2015
The geothermal community lacks a universal definition of deep geothermal systems. A minimum depth of 400 m is often assumed, with a further sub-classification into middle-deep geothermal systems for reservoirs found between 400 and 1000 m.
Breede, K., Dzebisashvili, K., Falcone, G.   +2 more
core   +1 more source

A multi-perforation staged fracturing experimental study on hydraulic fracture initiation and propagation

Energy Exploration & Exploitation, 2020
Hydraulic fracture initiation and propagation are extremely important on deciding the production capacity and are crucial for oil and gas exploration and development.
Jianguang Wei, Saipeng Huang, Guangwei Hao, Jiangtao Li, Xiaofeng Zhou, Tong Gong   +5 more
doaj   +1 more source

Mechanism of Coal Seam Permeability Enhancement and Gas Outburst Prevention under Hydraulic Fracturing Technology

Geofluids, 2022
In view of the high gas pressure and low permeability of deep coal seam, it is difficult to control gas, which affects the safety production of coal mine.
Xinhua Wu, Tao Zhu, Yufei Liu, Guoyu Zhang, Guanghui Zheng, Fengnian Wang   +5 more
doaj   +1 more source

Numerical simulation of hydraulic fracture propagation in fractured reservoir using global cohesive zone method

Frontiers in Physics, 2023
Natural fractures in reservoirs have a significant influence on hydraulic fracturing propagation. However, existing analyses have neglected the effect of natural fracture deformation parameters, including crack normal stiffness and shear stiffness on ...
Xiaotian Song, Hongyan Liu, Xiuhua Zheng
doaj   +1 more source

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

Characteristics of hydraulic ore-bearing structure: A case study of hydrothermal tungsten and uranium deposits in South China

Dizhi lixue xuebao
Objective  Hydraulic fracturing is a vital deformation and fracture mode in the whole crust-lithosphere range. The related structures are also critical ore-bearing structures of some hydrothermal deposits.
CHEN Bailin
doaj   +1 more source

Recent comprehensive review for extended finite element method (XFEM) based on hydraulic fracturing models for unconventional hydrocarbon reservoirs

Journal of Petroleum Exploration and Production Technology, 2020
Hydraulic fracturing has been around for several decades since 1860s. It is one of the methods used to recover unconventional gas reservoirs. Hydraulic fracturing design is a challenging task due to the reservoir heterogeneity, complicated geological ...
Belladonna Maulianda, Cindy Dhevayani Savitri, Aruvin Prakasan, Eziz Atdayev, Twon Wai Yan, Yew Kwang Yong, Khaled Abdalla Elrais, Reza Barati   +7 more
doaj   +1 more source

Mechanical Behavior and Microstructural Changes Associated with Tensile Deformation above the Martensite Start Temperature during Quenching and Subsequent Partitioning of a Low‐Alloy 37SiB6 Steel

Advanced Engineering Materials, EarlyView.
A new experimental setup, incorporating digital image correlation and infrared thermography in combination with inductive‐conductive heating for precise temperature control, is used to analyze the mechanical behavior and microstructural changes of sheet metal under complex thermomechanical test conditions that represent quench and partitioning ...
Christian Illgen, Benjamin Bohne, Sven Winter, Marcus Böhme, Martin F.-X. Wagner   +4 more
wiley   +1 more source

Experimental study on propagation of hydraulic fracture in volcanic rocks using industrial CT technology

Petroleum Exploration and Development, 2013
To understand the planar and three-dimensional geometry of hydraulic fractures in volcanic rocks, a hydraulic fracturing simulation experiment was conducted using the large-scale triaxial hydraulic fracturing test system in laboratory.
Lichun JIA, Mian CHEN, Liangtian SUN, Zhiyu SUN, Wei ZHANG, Qianqian ZHU, Zhen SUN, Yan JIN   +7 more
doaj   +1 more source

Utilizing Home Rule: The Case for Restricting Hydraulic Fracturing at the Local Level [PDF]

, 2016
30 pagesThe surge of hydraulic fracturing in the United States has spawned concern over public health risks associated with the practice. Some states, such as New York, have ultimately banned hydraulic fracturing citing significant environmental and ...
Schamber, Jolie
core