摘要
为明确贵州复杂地质条件下页岩气藏的储层特征及勘探前景,运用野外地质调查、实测地质剖面、系统采样等方法,采用有机碳含量测试、镜质组反射率测定、XRD、压汞、SEM及等温吸附测试等实验手段对所采样品进行测试分析。结果显示：区内广泛发育牛蹄塘组黑色页岩,TOC为2.15%~6.50%;干酪根以Ⅰ型为主,类镜质体岩心样最大反射率为3.16%~5.59%,矿物组分以石英、长石及黏土矿物为主;孔隙以nm级与μm级为主,宏观裂缝mm级,微观裂缝以μm级为主。
To define the shale gas reservoir features and exploration prospect under complex geological conditions in Guizhou Province, through methods of field geological investigation, geological section measuring and systematic sampling, using experimental means in- cluding TOC test, vitrinite reflectance determination, XRD, mercury intrusion, SEM and isothermal adsorption test carried out sample analyses and tests, then analyzed shale gas reservoir features in Fenggang area, Guizhou. The result has shown that the Niutitang Formation black shale is widely developed in the area. The tested results as follows： TOC is between 2.15%-6.50%; kerogen mainly belongs to type I; maximum reflectance of vitrinite between 3.16%-5.59%; mineral composition is mainly quartz, feldspar and clay minerals; pores belong to nm and μm levels, macro-fractures nm level, micro-fractures mainly μm level.
出处
《中国煤炭地质》
2016年第6期28-34,共7页
Coal Geology of China
基金
国家基础研究发展计划(973)项目(2012CB214702)
国家自然科学基金项目(41272155)
关键词
页岩气地质
储层特征
X衍射分析
等温吸附实验
贵州凤冈
shale gas geology
reservoir features
XRD
isothermal adsorption test
Fenggang area, Guizhou
