摘要
以层序地层学基本原理－周期性海平面升降控制旋回性地层沉积－为指导，根据地震、测井和古生物资料，对珠江口盆地开平凹陷及其围区的早中新世－中中新世地层进行系统的层序地层分析，认识到该区的层序地层学特点取决于其特殊的古地理位置。由于长期处于陆架坡折以下的盆地环境，开平凹陷在低海面时期发育了低位体系域。低位体系域下部的盆底扇厚度大，分布广，圈闭条件好，且紧邻生油凹陷，具备优先捕获油气的有利条件。应结合与之有关的构造对其进行深入研究，以开拓珠江口盆地油气勘探的新领域。
On the basis of the basic principles of sequence stratigraphy,the formation of cyclical sedimentary stratum is driven by eustasy which is periodic,and by analysing the seismic,well log and nano-microfossil data of Pearl River Mouth Basin,an integrated study was conducted which is on the sequence stratigraphy of lower and middle Miocene stratum within and around Kaiping Sag. It is recognized that the characteristics of sequence stratigraphy of the sag is defined by its particular pale-ogeographic position ,that is, its basinal settings below shelf-slope break for a long period of time allowing lowstand systems tracts to develop effectively within the sag. The basin floor fans in the lower parts of the tracts are thick,widespread,close to hydrocarbon kitchen in the sag and overlain by thick shales, therefore they take the first position of trapping hydrocarbon. A detail study should be conducted in conjunction with relevant structures in order to identify new exploration aspects in Pearl River Mouth Basin.
出处
《中国海上油气（地质）》
1994年第6期401-409,共9页
China Offshore Oil and Gas(Geology)
