成都理工大学学报（自然科学版）2017，Vol.44Issue(2)：178-185,8.DOI:10.3969/j.issn.1671-9727.2017.02.07
南海北部超深水区兴宁凹陷古近纪沉积充填特征
Characteristics of deposition filling of Paleogene in the modern ultra deep water area of Xingning sag in the north area of South China Sea
摘要
Abstract
The sedimentary and filling characteristics of Paleogene in the Xingning depression are studied in order to provide geological basis for the hydrocarbon exploration in the modern ultra deepwater area.On the basis of systematic analysis of seismic sequence stratigraphy and seismic facies,combined with the previous research results in adjacent area,it is showed that unconformity contact occurs among the Paleogene Wenchang Formation,Enping Formation and Zhuhai Formation in the Xingning depression and a total of 12 Ⅲ-sequences are recognized in the Paleogene.Terrestrial lacustrine deposition occurs in the Wenchang and Enping Formation,with delta deposition on gentle slope zone,shore to shallow lake on gentle slope shallow water zone,fan delta on steep slope zone and semideep-deep lake on depression center.Shallow delta deposition occurs in Zhuhai Formation.The overall process of transgressive sedimentary forms the space-time combination of the lacustrine mudstone source rocks in Enping Formation and sandstone reservoir in Wenchang Formation and Zhuhai Formation,a favorable oil and gas exploration potential in the study area.关键词
沉积充填/地震反射特征/油气勘探/古近系/兴宁凹陷Key words
deposition filling/seismic reflection characteristics/hydrocarbon exploration/Paleogene/Xingning sag分类
能源科技引用本文复制引用
袁立忠,汪瑞良,侯明才,刘军,邢凤存,龙更生,李孔森..南海北部超深水区兴宁凹陷古近纪沉积充填特征[J].成都理工大学学报（自然科学版）,2017,44(2):178-185,8.基金项目
国家科技重大专项(2011ZX05025-003). （2011ZX05025-003）
