摘要
东营凹陷的页岩油显示出较好的勘探潜力,但目前对泥页岩的系统研究还较少,地震及测井资料难以识别出有效的层序界面,制约了区域层序地层格架的建立。充分借鉴传统水进—水退层序划分的思路,将古水深变化的界面作为泥页岩层序界面识别的理论依据,将元素层序与GR层序划分方法相结合,探索出适合东营凹陷泥页岩层序地层划分的方法,建立了东营凹陷泥页岩层序地层格架。利用古环境、岩相、有机质丰度等资料,分析认为东营凹陷准层序组3与准层序组4界面和准层序组6与准层序组7界面之间的纹层状岩相、有机质富集段为有利的页岩油甜点段,且其横向连续性好。同时提出合理的钻采方式,可进一步提高页岩油勘探开发的经济效益。
The oil shale of Dongying sag shows excellent exploratory potentiality. However,recent research on the shale is little,and the sequence boundary is difficult to be identified based on seismic and logging data,which restricts sequence framework to be built. The sequence boundary of shale was identified by making full use of the traditional division method of progradation and retrogradation sequence according to the change of palaeobathymetry. By associating element sequence with GR sequence,a method was developed for shale sequence division to establish sequence framework of shale in Dongying sag. Combined with the palaeoenvironment analysis,lithofacies and abundance of organic matter,it is determined that the laminated facies with abundant organic matter respectively deposited between the parasequence boundaries of GRPS3 and GRPS4,GRPS6 and GRPS7 are favorable segments with good lateral continuity. And a reasonable drilling design was also put forward to improve the economic benefits of further exploration and development of oil shale.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2016年第2期52-56,共5页
Petroleum Geology and Recovery Efficiency
基金
国家科技重大专项"济阳坳陷页岩油勘探开发目标评价"之"济阳坳陷页岩油甜点要素预测与目标评价"(2016ZX05049004-006)
中国石化科技攻关项目"济阳坳陷页岩岩相及油气赋存机制"(P13019)
关键词
泥页岩
元素层序
GR层序
层序地层格架
有利区带预测
东营凹陷
shale
element sequence
GR sequence
sequence stratigraphic framework
prediction of favorable area
Dongy ing sag
作者简介
朱德燕（1974-）,女,吉林松原人,高级工程师,在读博士研究生,从事油气勘探综合研究工作.联系电话：（0546）8715536,Email：1102965192@qq.com.
