Results 111 to 120 of about 167,724 (304)
Determination of pre-Darcy/Darcy/non-Darcy seepage patterns in coal around extraction boreholes
Meitan xuebaoThe stress concentration phenomenon in extraction drill holes easily leads to different degrees of damage to the coal body structure around the holes, and the redistribution of stress also causes the formation of a large number of pores and fissure ...
Mingkun PANG +4 more
doaj +1 more source
Research and Application of Fiber Carrying Proppant Fracturing Technology in Eastern Ordos Basin
Shiyou jixie, 2021 When conventional fracturing technology is used to conduct fracturing in the gas reservoirs of eastern Ordos Basin, some problems such as low gas flow rate, poor rate maintenance capability and difficult development often occur.
Hu Guangming, Ji Suibo, Gao Yu
doaj
In-situ laser retorting of oil shale [PDF]
, 1977 Oil shale formations are retorted in situ and gaseous hydrocarbon products are recovered by drilling two or more wells into an oil shale formation underneath the surface of the ground.
Bloomfield, H. S.
core +1 more source
Evaluating Energy Absorption Performance of Filled Lattice Structures
Advanced Engineering Materials, EarlyView.Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney +2 more
wiley +1 more source
Effect of CO2 Fracturing Parameters on Well Temperature and Pressure
Shiyou jixie, 2018 Since the thermo physical properties of supercritical CO2 change drastically in the flow, the calculation method of common physical properties is not suitable.
Lan Jianping, Gong Qun, Xu Zhiguo
doaj
COLLES'S FRACTURE AND CHAUFFEUR'S FRACTURE [PDF]
BMJ, 1938 R A, Fitzsimons, I C, Fracture
openaire +2 more sources
Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study reports lightweight polyetherimide triply periodic minimal surfaces lattices coated with carbon nanotube‐reinforced epoxy that combine mechanical robustness with self‐sensing. The conformal coating enhances stiffness, strength and energy absorption while enabling reliable strain monitoring.
A. Triay +3 more
wiley +1 more source
The Economic and Budgetary Effects of Producing Oil and Natural Gas From Shale [PDF]
, 2014 [Excerpt] Recent advances in combining two drilling techniques, hydraulic fracturing and horizontal drilling, have allowed access to large deposits of shale resources—that is, crude oil and natural gas trapped in shale and certain other dense rock ...
Congressional Budget Office
core +1 more source
Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing
Advanced Engineering Materials, EarlyView.This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu +10 more
wiley +1 more source