石油实验地质2018，Vol.40Issue(1)：90-96,7.DOI:10.11781/sysydz201801090
四川盆地涪陵地区五峰—龙马溪组解吸气特征及影响因素分析
Characteristics and influencing factors of desorption gas in Wufeng-Longmaxi formations in Fuling area, Sichuan Basin
摘要
Abstract
Adsorption gas is the main form of shale gas, and research of the characteristics and influencing factors of desorption gas can guide the exploration and development of shale gas. The variation of desorption rate, the change of desorption gas volume and the difference of carbon isotopes were analyzed using desorption experi-ments of shale gas from Wufeng-Longmaxi formations in Fuling area in Sichuan Basin. The amount of natural gas desorbed within a certain time after a core is loaded into the desorber is measured and mainly reflects the amount of adsorbed gas and part of the free gas in the rock. The comparison with shale quality shows that the amount of desorbed gas is positively correlated with total organic carbon content, brittle mineral content, and the illite/smectite ratio in clay, but not related to illite content. It has a negative correlation with chlorite content. The amount of desorbed gas has a positive correlation with the micropore volume and possesses a good positive corre-lation with the mesopore volume, but not with the macropore volume.关键词
解吸气/碳同位素/页岩气/五峰-龙马溪组/涪陵地区/四川盆地Key words
desorption gas/carbon isotope/shale gas/Wufeng-Longmaxi formations/Fuling area/Sichuan Basin分类
能源科技引用本文复制引用
李凯,孟志勇,吉婧,郑晓薇,张谦,邹威..四川盆地涪陵地区五峰—龙马溪组解吸气特征及影响因素分析[J].石油实验地质,2018,40(1):90-96,7.基金项目
国家科技重大专项(2016ZX05060)和中国石化科技项目(P17014-2)资助. （2016ZX05060）
