川南地区深层页岩气富集条件差异分析与启示

张成林,赵圣贤,张鉴,常程,夏自强,曹埒焰,田冲,冯江荣,方圆,周翊

Analysis and enlightenment of the difference of enrichment conditions for deep shale gas in southern Sichuan Basin

Cheng-lin ZHANG,Sheng-xian ZHAO,Jian ZHANG,Cheng CHANG,Zi-qiang XIA,Lie-yan CAO,Chong TIAN,Jiang-Rong FENG,Yuan FANG,Yi ZHOU

表3 微量元素指标与沉积环境关系统计[30-33]

Table 3 Statistical table of relationship between microelement index and sedimentary environment[30-33]

指标 缺氧 贫氧 常氧 深水强还原环境 半深水弱还原环境 浅水氧化环境 水体溶氧量 <0.1 mL/L 0.1~1 mL/L >1 mL/L V/(V+Ni) >0.54 0.46~0.54 <0.46 Ni/Co >7 5.00~7.00 <5 U/Th >1.25 0.75~1.25 <0.75 Re/Mo <0.8×10-3 (0.8~9)×10-3 >9×10-3