Research on Pipe Material Selection for CCUS-EOR Pipeline Project
In view of the domestic engineering application of supercritical/dense phase CO2 pipeline transportation is almost zero,and there is no targeted standard specification for pipe selection,based on the summary of the achievements of the ground engineering technology system and construction mode of the whole CCUS-EOR industry chain,the applicability of CO2 pipe selection criteria,the differ-ences of HFW steel pipe,SMLS steel pipe and SAWL steel pipe,and their adaptability to CO2 pipe transportation are emphatically discussed,and some suggestions are put forward for the selection of CO2 pipe transportation.CCUS-EOR pipe has the characteristics of hard to stop cracking,large tempera-ture drop after leakage,easy corrosion,etc.The pipe should have good low-temperature perfor-mance,high crack arrest toughness,and corrosion resistance.Although there is no scientific,compre-hensive,and systematic standard system for CO2 pipeline transportation at home and abroad,tradition-al oil and gas pipeline materials and construction practices can be used for reference.The key to pipe se-lection is whether the technical index of steel pipe can meet the requirements of use,factors such as pipe price,performance,impact toughness,and adaptability to engineering conditions need to be comprehensively considered.
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