overbank deposits meaning in Chinese
漫滩沉积物
Examples
- Those within existing stream channels are much less stable than overbank deposits .
现在河槽内沉积物的稳定性比河漫滩上沉积物差的多。 - Delta front sedimentary assembled can be identified three microfacies : underwater distributary channel , underwater overbank deposits and distributary mouth bar . reservoir heterogeneity can divide macro heterogeneity and micro heterogeneity according to reservoir scale . macro heterogeneity research based on sedimentology and studied on sandstone longitudinal and landscape orientation distributing mode , it ' s inner structure character
储层非均质性根据储层描述尺度大小，可区分为宏观非均质性和微观非均质性，宏观非均质性研究是以沉积学为基础，研究砂体纵横向分布模式，砂体内部的结构特征。 - From sedimentology symbol such as rock assembled , sediment gradus , sandstone grading analysis , protogene sedimentary structure , ichnofossile and logging facies etc and palaeoenvironment background , it is confirmed that shen84 - an12block s34 segment is braid river delta system , not fan delta system ( abrupt slope ) . then it can be more partition as braid river delta plain sedimentary assembled , delta front sedimentary assembled and prodelta sedimentary assembled on core and log assembled . and delta plain sedimentary assembled can be identified four microfacies : braided distributary channel , crevasse splay , overbank deposits and interdistributary bay
沉积微相研究是储层非均质性研究的基础，研究区有丰富的岩芯资料和测井资料，通过岩石组合、沉积韵律，砂岩粒度分析、沉积构造、古生物遗迹和测井相等沉积学标志，结合古环境背景，确定沈84 ?安12块s _ 3 ~ 4段为辫状河三角洲体系，而不是前人所认为的扇三角洲(陡坡型)体系，在岩芯和测井组合上可进一步划分为辫状河三角洲平原沉积组合、三角洲前缘沉积组合和前三角洲沉积组合，其中三角洲平原沉积组合又可识别出辫状分流河道、决口扇、分流河道边部和分流间湾四种微相类型；三角洲前缘沉积组合识别出水下分流河道、水下分流河道边部和分流河口坝三种微相。