Results 61 to 70 of about 21,023 (296)

Understanding wastewater from hydraulic fracturing to minimise environmental risk [PDF]

open access: yes, 2020
Hydraulic fracturing to extract shale gas is widely regarded to be socially, environmentally, and politically controversial due to the perceived negative impacts of the process.
O'Donnell, Megan Catherine
core   +1 more source

Fundamental Study of CFD + XDEM Experimental Impermeable Reservoir Fracturing [PDF]

open access: yesE3S Web of Conferences
Hydraulic fracturing is an essential technique for enhancing hydrocarbon extraction from low-permeability reservoirs, such as shale and tight formations.
Asmadi Afandi Muhammad Amirul Hakim   +4 more
doaj   +1 more source

Hierarchical Ordering Induced Ultrahigh Cryogenic Strength and Strain Hardening in a Ni2CoFeV Medium‐Entropy Alloy

open access: yesAdvanced Science, EarlyView.
A tri‐phase Ni2CoFeV medium‐entropy alloy with fcc, κ, and L12 phases achieves exceptional cryogenic strength‐ductility synergy at 77 K. It delivers a yield strength of 1.4 GPa, an ultimate tensile strength of 2.07 GPa and a tensile ductility of 28%.
Lei Gu   +4 more
wiley   +1 more source

Energy analysis of hydraulic fracturing [PDF]

open access: yes, 2009
In this paper, numerical simulations of circular boreholes under internal hydraulic pressure are carried out to investigate the energy transferred to the surrounding rock and the breakdown pressure.
Golshani, Aliakbar, Tran-Cong, Thanh
core   +1 more source

Hydraulic fracturing and punching integration enhanced permeability gas extraction technology

open access: yesGong-kuang zidonghua
The existing hydraulic fracturing, hydraulic punching, hydraulic slotting, hydraulic cutting and other underground hydraulic permeability enhancement technologies in coal mines have complex processes, single adaptability conditions, and high labor ...
WANG Baogui
doaj   +1 more source

A Multimodal Magnetically Driven Soft Robot With Integrated Actuation‐Sensing Based on Photothermal Reprogramming Technology

open access: yesAdvanced Science, EarlyView.
This work reports a thermally safe, photothermally reprogrammable magnetic soft robot with its reprogramming temperature tuned to ∼39.5°C for biocompatibility. It achieves multimodal locomotion (max speed of 1.8 BL/s) and integrates liquid‐metal capacitive sensing to monitor self‐motion and detect environmental changes in simulated gastric environments,
Liu Yang   +5 more
wiley   +1 more source

ANALYSIS OF FRACTURE GEOMETRY IN FLUID DRAINAGE AFTER HYDRAULIC FRACTURING. CASE OF WINK MS-09 IN MAKELEKESE FIELD, D.R. CONGO [PDF]

open access: yes
In this paper, we analyze stimulation by hydraulic fracturing with the aim of establishing a relationship between fracture geometry and hydrocarbon drainage.
Jean Iyolo Lungembo   +5 more
core   +1 more source

Numerical Investigation of Influence of In-Situ Stress Ratio, Injection Rate and Fluid Viscosity on Hydraulic Fracture Propagation Using a Distinct Element Approach

open access: yesEnergies, 2016
Numerical simulation is very useful for understanding the hydraulic fracturing mechanism. In this paper, we simulate the hydraulic fracturing using the distinct element approach, to investigate the effect of some critical parameters on hydraulic ...
Bo Zhang   +5 more
doaj   +1 more source

Numerical Simulation on the Basic Rules of Multihole Linear Codirectional Hydraulic Fracturing

open access: yesGeofluids, 2020
Directional rupture is one of the most important and common problems in rock breaking engineering. The purpose of directional rock breaking can be effectively realized by using multihole linear codirectional hydraulic fracturing. In this paper, realistic
Weiyong Lu, Yonglong Wang, Xin Zhang
doaj   +1 more source

Programmable Multi‐Axially Aligned Aerogels via Sequential Freeze‐Casting for Tailored Anisotropy and Tunable Mechanics

open access: yesAdvanced Science, EarlyView.
Conventional single‐gradient freeze‐casting typically produces unidirectional porous architectures with limited transverse connectivity. The Sequential Hybridization by Infiltration and Freeze‐casting Technique (SHIFT) addresses this constraint by integrating secondary aligned structures within a preformed primary scaffold.
Kiho Sung, Sungchul Shin
wiley   +1 more source

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