Research on H₂S Corrosive Operation Condition for Drill Pipe in G105 Steel

Following the test method as specified in Specification NACE TM 0284-2003 and using Solution A(5%NaCl+0.5%CH₃COOH+saturated H₂S water solution) as per Specification NACE TM 0177-2005,standard HIC evaluation test and SSC test are conducted to G105 drill pipe at three different temperatures.The results show that no cracking developed with the specimen under the standard HIC test,and no fracture took place with the specimen under the standard SSC test,which leads to such a conclusion that the G105 drill pipe is not suitable for long-time operation under the H₂S-corrosive atmosphere.