岩性油气藏 ›› 2022, Vol. 34 ›› Issue (6): 126140.doi: 10.12108/yxyqc.20220611
耿夏童1,2, 邢凤存1,2, 闫海军3, 付辉4, 柴寒冰2, 刘志波2, 陈孝全2, 古强2
GENG Xiatong1,2, XING Fengcun1,2, YAN Haijun3, FU Hui4, CHAI Hanbing2, LIU Zhibo2, CHEN Xiaoquan2, GU Qiang2
摘要: 综合岩心、薄片、成像测井等资料,在高精度层序地层划分及沉积相研究的基础上,对四川盆地磨溪地区震旦系灯影组四段的台缘丘、台缘丘后滩及局限台地等相带储层特征进行了描述和对比。研究结果表明:①磨溪地区灯影组四段可划分出2个三级层序、7个准层序组和13个准层序。②研究区台地边缘带可划分出台缘丘、台缘滩、丘(滩)间等亚相,在局限台地内部识别出了台内丘、台内滩、丘(滩)间、潟湖和局限潮下等亚相,并细分了微相类型。③台缘区与台内区的储集岩石类型、储集空间及储集类型等基本一致,受三级层序高位体系域控制,垂向上发育2套储层,低角度和高角度微裂缝密度垂向上差异较大,物性具有向上变好的趋势。④不同相带储层孔隙空间类型及储层物性存在差异,台缘微生物丘发育区储层物性好,微裂缝和孔洞发育好,台缘丘后滩发育区微裂缝和孔隙发育程度及储层物性均变差,台内区进一步变差,但远离台缘区的局限台地区仍发育良好储层。
中图分类号:
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