Results 111 to 120 of about 70,976 (309)

Development and Laboratory Test of All-Metal Bridge Plug for Ultra-High Temperature Environments

open access: yesShiyou jixie, 2023
Soluble bridge plugs are deficient for low compressive strength,slow degradation rate,and inapplicability to ultra-high temperature environment.For these problems,an innovative design of all-metal bridge plug for ultra-high temperature environments was ...
Cheng Yuxiong   +5 more
doaj  

Architecture‐Driven Sensor Stability in Weft‐Knitted Engineering Textiles

open access: yesAdvanced Engineering Materials, EarlyView.
Textile‐integrated sensor architectures are systematically compared to evaluate their electromechanical behavior under combined mechanical and environmental loading. Pocket‐based integration exhibits stable and reproducible signals, whereas tunnel‐based routing shows higher sensitivity accompanied by increased variability.
Adnan Maroof Khan   +5 more
wiley   +1 more source

Mixing characteristics in perforation due to the delivery of combustion-supporting agent by jet for in-situ combustion of methane fracturing

open access: yesMeitan xuebao
As a disruptive reservoir stimulation technology in unconventional natural gas development, in-situ methane combustion fracturing generates complex fracture networks through high-temperature and high-pressure shockwaves produced by the combustion of ...
Chengzheng CAI   +7 more
doaj   +1 more source

Drilling for oil and gas in New Zealand: environmental oversight and regulation [PDF]

open access: yes, 2014
This report analyses the complex system of laws, agencies, and processes that regulate New Zealand\u27s oil and gas industry. Introduction In part due to the technique of hydraulic fracturing or ‘fracking’, more wells are being drilled in Taranaki and ...
Parliamentary Commissioner for the Environment
core  

An Explicit Constitutive Reconstruction Framework for Mechanical Characterization of Miniaturized 3D‐Printed Specimens

open access: yesAdvanced Engineering Materials, EarlyView.
An explicit constitutive reconstruction framework enables accurate tensile characterization of miniaturized additively manufactured specimens using only the grip‐to‐grip displacement measurements. Progressive validation through self‐consistency, analytical comparison, and inverse finite element method (iFEM) benchmarking demonstrates constitutive ...
Junqing Leng   +4 more
wiley   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Static and dynamic fluid-driven fracturing of adhered elastica

open access: yes, 2019
The geometry and propagation of fluid-driven fractures is determined by a competition between the flow of viscous fluid, the elastic deformation of the solid, and the energy required to create new surfaces through fracturing.
Ball, Thomasina
core   +1 more source

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

open access: yesAdvanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang   +6 more
wiley   +1 more source

A Study on Gel Fracturing Fluid for Coalbed Methane at Low Temperatures

open access: yes, 2011
Active water and plant gum fracturing fluids are widely used for coalbed methane in China, however, the limitations of poor theological property, high content of water insoluble substances, and high residual content need to be resolved.
Zhao, F.   +11 more
core   +1 more source

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