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Single factor diagenetic facies analysis of tight reservoir in western Sichuan foreland basin
Author(s): 
Pages: 48-52
Year: Issue:  2
Journal: ACTA PETROLEI SINICA

Keyword:  川西前陆盆地上三叠统致密储层成岩相成岩作用单因素分析;
Abstract: 对川西前陆盆地上三叠统的构造、沉积和成岩单因素进行了分析,并利用井资料对单因素成岩相进行了约束划分.在此基础上进行了平面叠加,确定了综合成岩相.在川西前陆盆地可以识别出前陆层序和非前陆层序,须二段是前陆层序中的油气储集体发育段,可划分出8种单因素成岩相,即压实压溶成岩相、碳酸盐胶结交代成岩相、石英次生加大成岩相、粘土矿物(伊利石)胶结交代成岩相、绿泥石衬边胶结成岩相、不稳定组分溶蚀成岩相、破碎裂缝成岩相和有机质充填成岩相.其中,冲断带发育的压实-破碎-溶蚀成岩相及近前渊三角洲相砂体中发育的强压实-溶蚀-绿泥石衬边胶结成岩相均可形成较好的储层.
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