摘要
根据岩石矿物、粒度分析化验、成像测井及三维地震资料,采用地质分析和地球物理结合的方法,分析莺歌海盆地莺东斜坡南段梅山组海底扇的沉积特征和控制因素。结果表明:研究区海底扇具有垂向上正粒序充填、内部3个次一级正粒序发育的特征,地震上表现为强振幅、明显的水道化、内部多期叠置的特征,海底扇主要以发育主水道、分支水道等沉积微相为主;海底扇沉积体系的发育受区域海平面下降、海南岛方向充足的物源、下切谷、断裂坡折、适宜的古地貌五大因素的耦合控制。该结果为莺歌海盆地莺东斜坡南段梅山组海底扇沉积体系勘探开发提供依据。
The sedimentary characteristics and controlling factors of the large submarine fan in Meishan Formation in the south parts of the Yingdong Slope Area were studied by physical properties,granularity analysis,image logging and three-dimensional seismic data.It shows normal grading which includes three secondary normal grading in the submarine fan,and strong amplitude,channeled,several circles of overlaps internal on the seismic sections,the main channels and branch channels are mainly sedimentary microfacies in the submarine fan.We think that the development of submarine fan sedimentary in the study area is mainly coupling controlled by the sea level fall,the provenance from Hainan Island,incised valley,fault slope-break zone and the suitable palaeogeomorphology.This study is of guiding significance for the next exploration deployment of submarine fan sedimentary system of the Meishan Formation in this area.
作者
陈杨
张道军
黄灿
张建新
王亚辉
CHEN Yang;ZHANG Daojun;HUANG Can;ZHANG Jianxin;WANG Yahui(Zhanjiang Branch of CNOOC(China),Guangdong 524057,China)
出处
《东北石油大学学报》
CAS
北大核心
2019年第4期40-49,I0003,共11页
Journal of Northeast Petroleum University
基金
国家科技重大专项(2016ZX05024-005)
关键词
莺歌海盆地
莺东斜坡南段
梅山组
海底扇
沉积特征
控制因素
Yinggehai Basin
south parts of the Yingdong Slope Area
Meishan Formation
submarine fan
sedimentary characteristics
controlling factors
