琼东南盆地深水区新生代海底扇沉积演化——以宝南断阶带为例  

Sedimentary evolution of submarine fan of Cenozoic in deep-water area of Qiongdongnan Basin:a case study in Baonan fault terrace zone

作　　者：张毅 毛宁波[1,2] 何丽娟 何小胡 刘新宇 罗威 苏榆丰 ZHANG Yi;MAO Ningbo;HE Lijuan;HE Xiaohu;LIU Xinyu;LUO Wei;SU Yufeng

机构地区：[1]长江大学地球物理学院 [2]油气资源与勘探技术教育部重点实验室 [3]中海石油(中国)有限公司湛江分公司研究院

出　　处：《海相油气地质》2019年第3期48-54,共7页Marine Origin Petroleum Geology

基　　金：“十三五”国家科技重大专项之专题“琼东南盆地深水区面向地质目标的地震资料处理关键技术”(编号：2016ZX05026-02-01)资助

摘　　要：琼东南盆地深水区是油气勘探的重要领域,大型储集体的发育条件及预测研究对该领域下一步的勘探至关重要。以钻井、测井、高精度三维地震等资料为基础,应用井震精细标定、骨架砂体雕刻和高精度三维地貌叠合等技术手段,对琼东南盆地深水区宝南断阶带的物源方向和海底扇展布规律进行了精细研究。结果表明:①宝南断阶带的主物源来自南部隆起;②研究区内主要发育永乐C-1和永乐D-1两个大型海底扇,扇体纵向上多期叠置,扇体内部沟通下伏烃源岩的断裂发育,成藏条件优越,具有重要的勘探意义。Deep-water area is one of the most important fields for oil and gas exploration in Qiongdongnan Basin,so it is very important for the next exploration to predict large-scale reservoirs in this area.Based on drilling,logging and high-precision three-dimensional seismic datum,the sediment source direction and submarine fan distribution of Baonan fault terrace zone in deep water area of southeastern Qiongdongnan Basin are studied by means of well-seismic fine calibration,skeleton sand body carving and high-precision three-dimensional geomorphological superposition.The results show that:(1)the main sediments of Baonan fault terrace zone came from the southern uplift;(2)two large submarine fans,Yongle C-1 and Yongle D-1,developed in the study area are of great significance for exploration,which are consisted of superimposed fans of different periods with faults communicating underlying source rocks.

关 键 词：海底扇 沉积演化 油气成藏 新生代 深水区 琼东南盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]