摘要
为得出一套适合陆相页岩气储层岩石学研究方法,加快页岩气研究进展,解决页岩气测试技术、评价方法及参考标准的不统一性,采用野外岩心描述、薄片分析、扫描电镜分析及X-衍射相结合的测试手段,参考DB61/577-2013《页岩气井岩样分析测试方法》标准,对鄂尔多斯盆地东南部下寺湾地区长7、长9段页岩岩石学进行分析测试,测试结果表明,下寺湾地区长7、长9段页岩气储层岩性复杂,黏土矿物含量高,石英、碳酸盐等脆性矿物含量少,常规测试方法难以进行精细研究,为此,增加了对测试样品的预处理以及设备的选用,形成一套陆相岩石学研究体系:岩心描述法,薄片鉴定法,扫描电子显微镜与能谱结合法,X射线衍射分析法。
To get a set of suitable petrological research methods for terrestrial shale gas reservoir, quicken the pace of shale gas research and solve the disparity between testing technique, appraisal method and reference standard, this paper analyzed the petrology of shale gas in the sections Chang 7 and Chang 9 in the Xiashiwan area, southeast of the Erdos basin using field drill core description, thin section analysis, SEM analysis and X-ray diffraction against the standard DB61/577-2013 The Analysis and Test Methods of the Sample in Shale Gas Well.The testing results indicated that the shale gas reservoir is complex in lithology, high in content of clay minerals,low in brittle minerals of quartz and carbonate, which are hard to be studied in detail by routine testing method.So, the tested samples are pretreated and more equipment used, forming a research system for terrestrial rocks as follows： drill core description, thin section identification, SEM and energy spectrum, and X-ray diffraction.
出处
《安徽地质》
2014年第4期247-250,共4页
Geology of Anhui
关键词
陆相页岩
岩石学
研究体系
terrestrial shale
petrology
research system
