川中—川西须家河组三段致密砂岩储集层分类及成因<sup>*</sup>

川中—川西须家河组三段致密砂岩储集层分类及成因^*

金惠¹, 崔俊峰¹, 杨桂茹¹, 杨威¹, 肖佃师², 王志宏¹, 王民², 武雪琼¹, 薄冬梅¹

Classification and origin of tight sandstone reservoirs of the 3rd Member of Xujiahe Formation in central and western Sichuan Basin

JIN Hui¹, CUI Junfeng¹, YANG Guiru¹, YANG Wei¹, XIAO Dianshi², WANG Zhihong¹, WANG Min², WU Xueqiong¹, BO Dongmei¹

川中—川西地区须三段致密砂岩岩屑及胶结物特征 a—石英次生加大以及方解石胶结,G6-4,中砂岩,G6井,4137.3 m,单偏光; b—燧石以及变质岩岩屑,QL12-20,细砂岩,QL12井,3948.85 m,单偏光; c—碳酸盐岩岩屑、千枚岩岩屑、火山岩岩屑以及变质岩岩屑,GA1-28,细砂岩,GA1井,2016.46 m,单偏光; d—与a同视域,正交光; e—与b同视域,正交光; f—与c同视域,正交光