GENERATION MECHANISM AND DISTRIBUTION CHARACTERISTICS OF HYDROGEN SULFIDE BEARING GAS IN CHINA
含硫化氢天然气的形成机制及分布规律研究

Reservoirs of hydrogen sulfide bearing gas are distributed widely in globally. The natural gas with H_2S content have been discovered in several petroliferous basins of China which include Sichuan, Bohai bay, Erdos, Tarim and Zhungaer, etc. Among them, the north-eastern gas area of Sichuan basin and the Zhaolanzhuang gas field located in North China, together with the Luojia gas field located in Shengli oil field of eastern China, are all belong to gas fields with high H_2S contents. According to the analysis and summary of the current research status of H_2S at home and abroad, based on the probing into the genetic mechanism of H_2S and its classification and combining the geological features of the gas fields with high H_2S content, it can be concluded that the above three gas fields were originated mainly from the thermochemical sulfate reduction (TSR).