摘要
基于钻井、粒度分析化验、岩心及三维地震等资料,采用沉积学、地震层序分析等方法,分析莺歌海盆地黄流组轴向重力流水道的充填演化特征。结果表明:研究区重力流水道由东、西两支水道组成,西支水道沿斜坡近轴向发育,东支水道近垂直斜坡发育;水道充填演化可分为低位期、海侵期和高位期,井区(交汇区)砂岩物源主要由东支水道供应,砂岩粒度较粗,粒度概率累积曲线呈两段式,以悬浮次总体为主;水道砂垂向上具有正粒序充填、内部5个次一级正粒序发育的特征。该结果对轴向重力流水道钻井部署具有指导意义。
The filling evolution characteristics of the axial gravity channel of Huangliu Formation in Yinggehai Basin are studied by drilling,granularity analysis,cores and 3 Dseismic data.Based on sedimentology and seismic sequence stratigraphic analyses,it shows that the gravity flow channel consists of the east and west branches,the west branch channel develops along the slope and the east branch channel vertical to the slope.The filling evolution of the waterway can be divided into LST,TST and HST stages,the source of channel sand in well area(intersection area)is mainly supplied by east branch waterway.The grain size of sandstone is coarser,and the cumulative grain size distribution curve is in the shape of two-segment mainly in suspended particle.It shows normal grading which include five secondary normal gradings in the channel sand in research area.This study provide important guiding significance for the next exploration and evaluation of drilling deployment in the channel.
作者
陈杨
张建新
黄灿
焦祥燕
罗威
CHEN Yang;ZHANG Jianxin;HUANG Can;JIAO Xiangyan;LUO Wei(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6期23-32,61,I0002,共12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
莺东斜坡带
黄流组
轴向重力流水道
水道砂
充填演化特征
Yinggehai Basin
Yingdong Slope Zone
Huangliu Formation
axial gravity channel
channel sand
filling evolution characteristics
