Effect of Muscat Oilfield Brine on the Stressed X-70 Pipeline Steel

Vacuum ◽  
2019 ◽  
Vol 164 ◽  
pp. 126-131 ◽  
Author(s):  
Paul C. Okonkwo ◽  
Furqan Ahmad ◽  
Beladi Hossein
Keyword(s):  
Pipeline Steel ◽  
Oilfield Brine

Inhibition of pipeline steel corrosion in acidic environment using sulphadoxine and pyrimethamine

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Inhibition Efficiency ◽  
Pipeline Steel ◽  
Electrochemical Techniques ◽  
Steel Corrosion ◽  
Acidic Environment ◽  
Inhibitor Concentration ◽  
Adsorption Data ◽  
Corrosion Inhibition Efficiency ◽  
Inhibitive Action ◽  
Sulphadoxine Pyrimethamine

The anti-corrosive properties of sulphadoxine + pyrimethamine (S+P) on the corrosion of pipeline steel in acidic environment were investigated using electrochemical techniques. The results obtained showed an excellent inhibition efficiency which increased with increase in inhibitor concentration. The corrosion inhibition efficiency increased up to 99.04 % at 0.01M S+P and decreased with rise in temperature down to 85.93 % at 333 K and 0.01 M S+P, suggesting a physiosorptive mechanism of adsorption. Also the adsorption data was fitted into Langmuir and Temkin adsorption isotherms, while the inhibitive action was shown to proceed by mixed inhibition mode.

STRESS CORROSION CRACK INITIATION BEHAVIOR FOR THE X70 PIPELINE STEEL BENEATH A DISBONDED COATING

2012 ◽  
Vol 48 (10) ◽  
pp. 1267 ◽  
Author(s):  
Zhiying WANG ◽  
Jianqiu WANG ◽  
En-hou HAN ◽  
Wei KE ◽  
Maocheng YAN ◽  
...  
Keyword(s):  
Crack Initiation ◽  
Stress Corrosion ◽  
Stress Corrosion Crack ◽  
Pipeline Steel ◽  
X70 Pipeline Steel ◽  
Disbonded Coating

PROPERTIES AND MICROSTRUCTURE OF THIRD GENERATION X90 PIPELINE STEEL

2013 ◽  
Vol 49 (3) ◽  
pp. 271 ◽  
Author(s):  
Dianxiu XIA ◽  
Xuelin WANG ◽  
Xiucheng LI ◽  
Yang YOU ◽  
Chenjia SHAN
Keyword(s):  
Pipeline Steel ◽  
Third Generation

Numerical Simulation of Hydrogen Transport at a Crack Tip in a Pipeline Steel

2006 ◽  
Author(s):  
Mohsen Dadfarnia ◽  
Petros Sofronis ◽  
Ian Robertson ◽  
Brian P. Somerday ◽  
Govindarajan Muralidharan ◽  
...  
Keyword(s):  
Distribution System ◽  
Large Scale ◽  
Pipeline Steel ◽  
Rapid Assessment ◽  
Crack Tip ◽  
Hydrogen Transport ◽  
Natural Gas Pipeline ◽  
Central Production ◽  
Materials Used ◽  
Pressure Hydrogen

The technology of large scale hydrogen transmission from central production facilities to refueling stations and stationary power sites is at present undeveloped. Among the problems which confront the implementation of this technology is the deleterious effect of hydrogen on structural material properties, in particular at gas pressure of 1000 psi which is the desirable transmission pressure suggested by economic studies for efficient transport. In this paper, a hydrogen transport methodology for the calculation of hydrogen accumulation ahead of a crack tip in a pipeline steel is outlined. The approach accounts for stress-driven transient diffusion of hydrogen and trapping at microstructural defects whose density may evolve dynamically with deformation. The results are used to discuss a lifetime prediction methodology for failure of materials used for pipelines and welds exposed to high-pressure hydrogen. Development of such predictive capability and strategies is of paramount importance to the rapid assessment of using the natural-gas pipeline distribution system for hydrogen transport and of the susceptibility of new alloys tailored for use in the new hydrogen economy.

Effect of lamellar α on the stress corrosion cracking of Ti-6Al-4 V alloy in simulated oilfield brine

2021 ◽  
Vol 174 ◽  
pp. 111000
Author(s):  
Guangfang Chi ◽  
Bo Jiang ◽  
Danqing Yi ◽  
Lingyun Yang ◽  
Suping Pan ◽  
...  
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Oilfield Brine
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