Dating back to the founding of Nankai University (NKU) in 1919and initiated by Prof.Zong-Yue Qiu in 1921,the Department of Chemistry at NKU is one of the earliest chemistry programs in Chinese universities.In 1923,Pro...Dating back to the founding of Nankai University (NKU) in 1919and initiated by Prof.Zong-Yue Qiu in 1921,the Department of Chemistry at NKU is one of the earliest chemistry programs in Chinese universities.In 1923,Prof.Shi-Xian Yang joined the faculty and worked with renowned chemists and chemical engineering specialists.In 1932,Prof.展开更多
High pressure and high temperature corrosion performance of high strength 15 Cr martensitic stainless steel was studied in different severe environments—live acid（10%HCl＋1.5%HF＋3%HAc＋5.1% corrosion inhibitor）,sp...High pressure and high temperature corrosion performance of high strength 15 Cr martensitic stainless steel was studied in different severe environments—live acid（10%HCl＋1.5%HF＋3%HAc＋5.1% corrosion inhibitor）,spent acid and formation water containing CO2.The results show that the corrosion of high strength 15 Cr martensitic stainless steel in live acid is most serious,and the uniform corrosion rate is far greater than those in spent acid and formation water containing CO2 corrosion environments,but all of them can be acceptable for oilfield.Acidizing corrosion inhibitor displays a good matching ability with the high strength 15 Cr martensitic stainless steel in terms of decreasing the uniform corrosion rate,which changes mainly the anodic process of high strength 15 Cr martensitic stainless steel.The corrosion potential moves to the positive direction,thus the corrosion current density decreases significantly.There are some different degrees of pitting of high strength 15 Cr martensitic stainless steel after corrosion tests in live acid,spent acid and formation water containing CO2,and the pitting density aggravates significantly and the maximum pit depth decreases in the corrosion sequence.展开更多
文摘Dating back to the founding of Nankai University (NKU) in 1919and initiated by Prof.Zong-Yue Qiu in 1921,the Department of Chemistry at NKU is one of the earliest chemistry programs in Chinese universities.In 1923,Prof.Shi-Xian Yang joined the faculty and worked with renowned chemists and chemical engineering specialists.In 1932,Prof.
基金Item Sponsored by National Natural Science Foundation of China(51271146,51074126)
文摘High pressure and high temperature corrosion performance of high strength 15 Cr martensitic stainless steel was studied in different severe environments—live acid（10%HCl＋1.5%HF＋3%HAc＋5.1% corrosion inhibitor）,spent acid and formation water containing CO2.The results show that the corrosion of high strength 15 Cr martensitic stainless steel in live acid is most serious,and the uniform corrosion rate is far greater than those in spent acid and formation water containing CO2 corrosion environments,but all of them can be acceptable for oilfield.Acidizing corrosion inhibitor displays a good matching ability with the high strength 15 Cr martensitic stainless steel in terms of decreasing the uniform corrosion rate,which changes mainly the anodic process of high strength 15 Cr martensitic stainless steel.The corrosion potential moves to the positive direction,thus the corrosion current density decreases significantly.There are some different degrees of pitting of high strength 15 Cr martensitic stainless steel after corrosion tests in live acid,spent acid and formation water containing CO2,and the pitting density aggravates significantly and the maximum pit depth decreases in the corrosion sequence.
