四川盆地上震旦统灯影组微生物碳酸盐岩储层特征与主控因素
发布时间：2018-08-30 08:08
【摘要】：四川盆地上震旦统灯影组微生物碳酸盐岩主要发育在灯二段和灯四段。灯二段以凝块石和葡萄石为主,储集空间类型有葡萄-花边状孔洞、微生物体腔孔、微生物格架孔和凝块间溶孔;纵向上发育3个储层段,储层沥青集中发育在桐湾Ⅰ期不整合面之下117 m。灯四段则发育纹层石和叠层石,储集空间则以窗格孔和岩溶孔洞为主,辅以凝块间溶孔和微生物体腔孔;亦发育3个储层段,储层沥青发育在桐湾Ⅱ期不整合面之下134.2 m。四川盆地灯影组微生物岩储层形成和分布主要受控于浅水潮坪微生物席、微生物结构、白云石化和绵阳-长宁拉张槽。广布的浅水潮坪微生物席建造是优质储层发育的基础,微生物结构影响着储层的初始差异性,白云石化作用是微生物岩储层形成的关键,绵阳-长宁拉张槽控制下的风化壳岩溶和埋藏溶蚀作用决定了微生物岩优质储层的改造强度和展布,灯影组微生物岩优质储层主要分布于绵阳-长宁拉张槽东西两侧的边缘带。
[Abstract]:The microbial carbonate rocks of the Dengying formation of the Upper Sinian in Sichuan Basin are mainly developed in the second and fourth member of the lantern formation. The second stage of the lamp is mainly composed of agglomerate and grapestone, and the reservoir space types include grape-lace cavity, microorganism lattice pore and solubilization pore between coagulants, and three reservoir segments are developed longitudinally. The reservoir asphalt is concentrated at 117 m below the unconformable surface of Tongwan stage 鈪，
本文编号：2212489
[Abstract]:The microbial carbonate rocks of the Dengying formation of the Upper Sinian in Sichuan Basin are mainly developed in the second and fourth member of the lantern formation. The second stage of the lamp is mainly composed of agglomerate and grapestone, and the reservoir space types include grape-lace cavity, microorganism lattice pore and solubilization pore between coagulants, and three reservoir segments are developed longitudinally. The reservoir asphalt is concentrated at 117 m below the unconformable surface of Tongwan stage 鈪，
本文编号：2212489
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