scholarly journals Application of displacement monitoring system on high temperature steam pipe

2017 ◽  
Vol 257 ◽  
pp. 012026
Author(s):  
M H A Ghaffar ◽  
S Husin ◽  
J E Baek
Keyword(s):  
High Temperature ◽  
Monitoring System ◽  
Displacement Monitoring ◽  
Steam Pipe ◽  
High Temperature Steam

Burst Cause Analysis of the High Temperature Steam Pipe in Heavy Oil Well

2014 ◽  
Author(s):  
Qiang Liu ◽  
Sheng-yin Song ◽  
Yao-rong Feng ◽  
Bo Duan
Keyword(s):  
High Temperature ◽  
Brittle Fracture ◽  
Fracture Surface ◽  
Heavy Oil ◽  
Mechanical Damage ◽  
Water Hammer ◽  
Oil Well ◽  
Damage Area ◽  
Steam Pipe ◽  
High Temperature Steam

The high temperature steam pipe used in one heavy oil well in China burst. This failure pipe was investigated and analyzed by macroscopic analysis, material tests (including chemical composition, metallurgical analysis & mechanical property) and fracture surface scanning electronic microscopy (SEM) analysis. Then it can be concluded that the mechanical properties of the burst pipe accord with related standards, and that the fracture surface is a typical brittle fracture. The herringbone stripes were found on the fracture surfaces and pointed to a fracture source where there were over 1.6mm deep mechanical damages on the pipe surface. After micro hardness testing near mechanical damage area and the nearby substrate, it was found that the toughness of mechanical damage area was low. The expanding diameter of the burst pipe was also investigated. Because the residual water in the pipe was pushed by high temperature steam when the steam was turned on, the speed of water was very fast, and the stress caused by water hammer were higher than yield pressure of the pipe, which is the internal pressure in the pipe and which could produces a maximum hoop stress in the pipe equal to the yield strength of the pipe material, the pipe would be expanded. The fracture surface is a typical brittle fracture. There are two mechanical damages on the fracture source, and the pipe burst because of the mechanical damages and huge impact of water hammer.

Simulation of high-temperature steam-only gasification of woody biomass with dry-sorption CO2capture

2016 ◽  
Vol 94 (9) ◽  
pp. 1648-1656 ◽  
Author(s):  
Ehsan Mostafavi ◽  
Jennifer H. Pauls ◽  
C. Jim Lim ◽  
Nader Mahinpey
Keyword(s):  
High Temperature ◽  
Woody Biomass ◽  
High Temperature Steam

High activity oxide Pr0.3Sr0.7Ti0.3Fe0.7O3−δ as cathode of SOEC for direct high-temperature steam electrolysis

2017 ◽  
Vol 42 (17) ◽  
pp. 12104-12110 ◽  
Author(s):  
Lijuan Zhang ◽  
Zhihong Wang ◽  
Zhiqun Cao ◽  
Lin Zhu ◽  
Pengzhang Li ◽  
...  
Keyword(s):  
High Temperature ◽  
High Activity ◽  
High Temperature Steam
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