Through researched on corrosion factors and development progress of sour gas field in China, the development situation of sour gas field in China was defined, the types of sour gas corrosion and impact factors of hydrogen sulfide stress cracking were illustrated. The results showed that, there are many corrosion mechanisms not clear when synergistic with different factors. The 105ksi grade drill-pipe was manufactured successfully, but it’s not enough for deep-well drilling. The standard API grade drill-pipe of low yield strength and hardness were mainly used in high sour gas field development. A series of tubing & casing were research and development, and applied in many overseas oil fields successfully.
