石油实验地质2019，Vol.41Issue(1)：76-82,7.DOI:10.11781/sysydz201901076
鄂西宜昌斜坡区寒武系页岩储层发育特征——以鄂宜页1井为例
Characteristics of the Cambrian Shuijingtuo shale reservoir on Yichang Slope, western Hubei Province:a case study of well EYY 1
摘要
Abstract
The characteristics of shale reservoirs on the Yichang Slope in the western Hubei Province were studied using organic geochemistry, mineral X-ray diffraction, field emission scanning electron microscopy and nuclear magnetic resonance methods on black shale samples collected from the Cambrian Shuijingtuo Formation in the well EYY 1. Shale in the study area is mainly composed of quartz, clay minerals and carbonates with high calcium and low siliceous contents. From bottom to top, the contents of clay minerals and carbonates gradually decrease, while the content of quartz gradually increases. Shale porosity has a positive relationship with TOC content, especially in the section with a TOC content higher than 2％. Micro pores and small pores are abundant in the shale. Small pores and meso pores contribute significantly to porosity. The contribution of pores in brittle minerals to the matrix porosity of shale is stable, while the contribution of organic pores and interlayer pores in clay minerals are respectively changing relative to their contents, which means that the contribution of organic pores increases with depth and pores in clay minerals decrease gradually.关键词
储层特征/页岩气/水井沱组/寒武系/宜昌斜坡区/鄂西Key words
reservoir characteristics/shale gas/Shuijingtuo Formation/Cambrian/Yichang Slope/western Hubei Province分类
能源科技引用本文复制引用
李海,刘安,罗胜元,陈孝红,陈林..鄂西宜昌斜坡区寒武系页岩储层发育特征——以鄂宜页1井为例[J].石油实验地质,2019,41(1):76-82,7.基金项目
国家科技重大专项"中扬子高演化页岩气赋存机理与富集规律研究"(2016ZX05034001-002) （2016ZX05034001-002）
中国地质调查局项目(DD20179615)资助 （DD20179615）
