Results 81 to 90 of about 165,045 (285)
Continuous Sand Transport Unit for Fracturing in Shale Gas Development
Shiyou jixie, 2016 Given large displacement and high sand ratio in shale gas recovery,a large amount of sand and fast sanding at 3~8 m3/min are required.The sanding mode in conventional fracturing is inapplicable for its low transport efficiency and large area occupation ...
Wang Yunhai +4 more
doaj
Generalized fracturing activation criteria
Dizhi lixue xuebaoObjective Rock fracturing and its subsequent activations are the most basic tectonic deformation modes. However, the classical fracturing criteria (Coulomb-Mohr criterion, Griffith criterion, and Byerlee sliding-friction law) have different limitations ...
TONG Hengmao +4 more
doaj +1 more source
Rock fracturing mechanisms by blasting [PDF]
Podzemni Radovi, 2018 Optimizing blast fragmentation and reducing the damage from it are two important research subjects in this field. Detonation and explosive charge induces three sets of tension cracks in the monolith rock.
Torbica Slavko, Lapčević Veljko
doaj
Fem Analysis of Proppant Sticking in Rock Cracks
Archives of Civil Engineering, 2018 The problem of effective gas extraction from Polish shale rocks is an interesting research subject for scientists. A properly selected proppant, which protects cracks from closing during the fracturing process, inestimably contributes to an increase of ...
Kwietniewski M. +2 more
doaj +1 more source
The brittleness index in hydraulic fracturing [PDF]
, 2015 We present a new definition of a brittleness index which is used as a criterion for candidate selection of rock intervals for hydraulic fracturing. The new index is a combination of material strength parameters and insitu stresses. It was derived from an
Atkinson, C, Papanastsiou, P
core
A survey of fractured SrTiO$_3$ surfaces: from the micro-meter to nano-meter scale
, 2010 Cross-sectional scanning tunneling microscopy was utilized to study fractured perovskie oxide surfaces. It was found for the non-cleavable perovskite oxide, SrTiO$_{3}$, that atomically flat terraces could be routinely created with a controlled ...
Chien, TeYu +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti +5 more
wiley +1 more source
Effect of Cementing Quality on Casing Failure in Horizontal Section of Shale Gas Well
Shiyou jixie, 2019 The casing for shale gas well is subject to complicate forces. The inferior cementing quality will easily cause large stress concentration on the casing, which will lead to deformation failure.
Mai Yang +5 more
doaj
, 2016 Master's Project (M.S.) University of Alaska Fairbanks, 2016This project examines the various drivers that led to the U.S. shale oil revolution in order to predict its place in the energy industry going forward and to analyze its effects on Alaska.
Malin, Michael A.
core
Advanced Engineering Materials, EarlyView.This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar +6 more
wiley +1 more source