研究指出粘土矿物含量随深度增加而降低；
The study indicates those clay content decreases with increased depth.
疏松砂岩稠油油藏孔隙度大，胶结疏松，粘土矿物含量偏高。
Heavy oil reservoir of loose sand is of large porosity, loose cementation and higher clay content.
粒阳离子交换量的高低与2：1型粘土矿物含量的多少相吻合。
The clay cation exchange capacity is affected by 2:1 type clay mineral content.
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