摘要
天然气形成过程中的加氢作用和 TSR 反应是有机-无机相互作用的重要方式。相邻水体和深部来源的氢,是天然气形成的重要氢源,塔里木盆地天然气的甲烷氢同位素组成明显表现出不同沉积水体对甲烷氢同位素的控制作用,大宛105～25井和阿克1井具有深部流体加氢的特征;TSR 反应中硫同位素在不同反应阶段和反应过程具有不同的分馏特征,这种特征在四川盆地高舍硫天然气中具有很好的表现,TSR 反应硫同位素分馏一般小于20‰,而单体硫、黄铁矿和硫酸盐矿物等其它反应过程的产物硫同位素分馏不明显。
Hydrogenation and TSR （ thermochemical sulfate reduction） were typical interaction for organic and inorganic interaction. The hydrogen from Surrounding water and deep-source has significant influence to natural gas forming. Water environment controlled methane hydrogen isotopic composition of natural gas in Tarim basin. The methane hydrogen isotopic composition of natural gas in Dawanl05 - 25 well and Akel well show characteristic of deep-source fluid hydrogenation. There have different sulfur isotope fractionation during TSR and other reactions. The former less than 20 Commonly. The reactions between sulfur, pyrite and sulfates have small sulfur isotope fractionation. The upper characteristics have been observed in our work on Sichuan basin.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第8期2237-2242,共6页
Acta Petrologica Sinica
基金
国家重点基础研究项目(2001CB209102)资助
关键词
有机-无机相互作用
加氢作用
TSR反应
甲烷氢同位素组成
硫同位素分馏
Organic-inorganic interaction, Hydrogenation, TSR （ thermochemical sulfate reduction）, Methane hydrogen isotopic composition, Sulfur isotope fractionation
