现代地质2012，Vol.26Issue(4)：732-740,9.
渝东南地区黑色页岩中粘土矿物特征兼论其对储层物性的影响——以彭水县鹿角剖面为例
Clay Minerals of Black Shale and Their Effects on Physical Properties of Shale Gas Reservoirs in the Southeast of Chongqing: A Case Study from Lujiao Outcrop Section in Pengshui, Chongqing
摘要
Abstract
In order to search after clay minerals of black shale and their effects on physical properties of shale gas reservoirs in the southeast of Chongqing, combination and distribution characteristic, formation mechanism and controlling factors of clay minerals and their effect on porosity and permeability are discussed in detail based on the knowledge of previous studies on clay minerals in petroliferous basins and taking Lujiao outcrop section in Pengshui County for example. Then it draws a conclusion that the combination of clay minerals in Lujiao section is I + C + I/S and the formation is controlled by palaeoenvironment and diagenesis which on one hand, the palaeosalinity is higher in the bottom and becomes lower in the up part, on the other hand, the black shale is in the B stage of late diagenesis. It has been discovered that type, quantity and distribution character of clay minerals are closely related to porosity and permeability of shale gas reservoirs. Exactly speaking, the growth of illite in the diagenesis can increase the porosity in some extent but will lose some permeability; chlorite has a positive correlation with porosity and permeability, which may be resulted from the detrital feldspars.关键词
物性特征/粘土矿物/黑色页岩/龙马溪组/鹿角剖面/渝东南地区Key words
physical property/ clay mineral/ black shale/ Longmaxi Formation/ Lujiao section/ southeast of Chongqing分类
天文与地球科学引用本文复制引用
李娟,于炳松,刘策,孙梦迪..渝东南地区黑色页岩中粘土矿物特征兼论其对储层物性的影响——以彭水县鹿角剖面为例[J].现代地质,2012,26(4):732-740,9.基金项目
国土资源部油气资源战略研究中心项目“全国页岩气资源战略调查先导试验区——渝东南地区页岩气资源战略调查与选区”(2009GYXQ15-04). （2009GYXQ15-04）
