超压背景下中深层砂岩储集层沉积—成岩演化差异性分析: 以南海莺歌海盆地中新统黄流组为例*
毛倩茹1, 范彩伟2, 罗静兰1, 曹江骏1, 尤丽2, 符勇1, 李珊珊2, 史肖凡1, 吴仕玖2

Analysis of sedimentary-diagenetic evolution difference on middle-deep buried sandstone reservoirs under overpressure background: a case study of the Miocene Huangliu Formation in Yinggehai Basin,South China Sea
Mao Qian-Ru1, Fan Cai-Wei2, Luo Jing-Lan1, Cao Jiang-Jun1, You Li2, Fu Yong1, Li Shan-Shan2, Shi Xiao-Fan1, Wu Shi-Jiu2
南海莺歌海盆地东方区与乐东区黄流组储集层镜下成岩作用与电子探针成分特征 a—DF13-1B井,2866.1 m,分选中等,塑性岩屑轻微形变,白云石、铁白云石交代团块状菱铁矿;b—DF13-2B井,3127.2 m,可见铁方解石充填粒间孔隙,并充填、交代生物碎屑,铁方解石遭受溶蚀;c—DF13-2B井,3132.4 m,黑云母绿泥石化,铁方解石充填孔隙,沥青被黏土矿物吸附,沿孔隙边缘分布,可见粒间溶孔、粒内溶孔、铸膜孔;d—LD10-1B井,4386.0 m,分选差,局部铁方解石呈基底式胶结;e—LD10-2A井,3711.5 m,含铁方解石交代生物碎屑壳壁、充填次生溶孔,可见粒间溶孔、粒内溶孔、铸模孔;f—LD10-2A井,3731.8 m,铁白云石交代铁方解石,粒间凹凸接触;g—DF13-1A井,2862.4 m,石英加大及金红石、高岭石和伊利石充填粒间孔隙;h—DF13-2B井,3125.13 m,自生石英、草莓状黄铁矿与绿泥石充填粒间孔隙;i—LD10-1C井,3975.0 m,显微球状黄铁矿以及菱铁矿充填粒间孔隙;j—LD10-1A井,4172.9 m,胶状—自形粒状黄铁矿充填粒间孔隙;k—LD10-1E井,4304.0 m,黄铁矿与金红石充填粒间溶孔;l—LD10-2A井,3858.0 m,自生磷灰石充填粒间孔隙。Rt: 金红石;Qz: 石英;Kln: 高岭石;Ill: 伊利石;Py: 黄铁矿;Chl: 绿泥石; Sd: 菱铁矿。a~f: 铸体薄片,单偏光;g~i: 扫描电镜;j~l: 电子探针