成岩作用对泥页岩储集性能的影响: 以东营凹陷古近系沙四上亚段为例*
余志云1, 陈世悦1, 张顺2, 刘鑫金2, 唐东2, 鄢继华1

Influence of diagenesis on reservoir performance of shale: a case study of the upper sub-member of Member 4 of Paleogene Shahejie Formation in Dongying sag
YU Zhiyun1, CHEN Shiyue1, ZHANG Shun2, LIU Xinjin2, TANG Dong2, YAN Jihua1
渤海湾盆地东营凹陷沙四上亚段主要成岩作用类型及镜下特征 A—碳酸盐透镜体呈定向排列,单偏光,樊页1井,3277.43 m;B—伊/蒙混层(I/S)黏土矿物与方解石(Cc)呈定向排列,樊页1井,3258.67 m;C—碳酸盐晶间孔发育微晶石英,樊143井,3131.8 m;D—碳酸盐胶结物,发育于晶间孔内,樊页1井,3411.7 m;E—草莓状黄铁矿与自形单晶黄铁矿,牛页1井,3416.45 m;F—石盐顺层发育,樊页1井,3411.04 m;G—铁白云石,晶体直径约62.5 μm,樊页1井,3343.81 m;H—泥晶白云石(Dol),晶间孔发育,樊页1井,3420.48 m;I—港湾状、阶梯状方解石颗粒溶蚀边界,樊页1井,3264.42 m;J—白云石粒内溶孔,樊页1井,3380.82 m;K—马牙状方解石,内部有机质纹层错断,阴极发光,牛页1井,3442.0 m;L—重结晶方解石层,内部微孔发育,樊页1井,3376.9 m;M—针状伊利石,樊143井,3110 m;N—丝片状伊利石,樊143井, 3115.43 m;O—有机质生烃收缩,樊页1井,3335.68 m