石油实验地质2019，Vol.41Issue(1)：127-133,7.DOI:10.11781/sysydz201901127
六盘山盆地页岩吸附气赋存条件及其影响因素
Occurrence and controls of shale absorbed gas in Liupanshan Basin
摘要
Abstract
The Liupanshan Basin has potentially favorable conditions for oil and gas exploration. An absorbed gas model and other methods were used to study the mud shale in the Cretaceous Madongshan Formation in the well GY 1 in the Liupanshan Basin in order to discuss the occurrence and controls of the shale absorbed gas. The Cretaceous shale in the basin has a relatively low content of organic matter, but the maximum methane adsorption capacity ranges from 1.73 to 2.35 m3/t with a mean value of 2.03 m3/t indicating a relatively high gas storage capacity. The adsorption capacity of the shale increases first and then decreases with increasing depth. There is a deep inflection point. Pressure plays a major role in shallow formations, while temperature plays a major role at depth. The occurrence conditions of shale absorbed gas were mainly affected by six factors, among which the influence of organic matter abundance, maturity and moisture content were not significant, while mineral content, microscopic properties, temperature and pressure were the main influencing factors. When the external geological conditions are suitable, the gas enrichment degree of the shale reservoir in the Liupanshan Basin could be relatively high and very favorable for exploration.关键词
赋存条件/吸附气/泥页岩/马东山组/白垩系/六盘山盆地Key words
occurrence condition/absorbed gas/mud shale/Madongshan Formation/Cretaceous/Liupanshan Basin分类
能源科技引用本文复制引用
韩伟,艾宁,李玉宏,张云鹏,郭望..六盘山盆地页岩吸附气赋存条件及其影响因素[J].石油实验地质,2019,41(1):127-133,7.基金项目
国家科技重大专项(2016ZX05034001-006) （2016ZX05034001-006）
中国地质调查局能源矿产地质调查项目(DD20160174) （DD20160174）
宁夏高层次科技创新领军人才培养项目和陕西省自然科学基金(2018JM4031)资助 （2018JM4031）
