摘要
古近系东营组在陈家庄凸起西段由西、北、东3个方向向凸起高部位尖灭,形成了大量的地层超覆圈闭。以陈22块勘探实践为例,总结出一套适合于该区东营组地层超覆油藏的地震描述技术。即利用地震资料预处理提高分辨率,在地震剖面上直接识别追踪油层;地震相分析落实有利储层发育区;分频属性分析圈定主力含油小层分布范围,刻画其超覆线的位置;测井约束反演描述主力含油小层构造,确定钻探目标。截至2006年底,利用该技术在陈22块部署了9口探井,其中6口井获工业油流,探明石油地质储量达200×104t。
A lot of stratigraphic overlap traps formed as a result of the pin-chout of Dongying Formation to high position in west,north and east,western Chenjiazhuang Uplift. Taking Chen22 block for an example,a series of seismic techniques for describing the strati-graphic overlap oil reservoir of Dongying Formation in this area have been established. Resolution can be improved after pre -treatment of the seismic data. Oil -bearing formations may be traced directly on the seismic profile. Analysis of seismic facies is favorable of recognizing the developed reservoir region. Attrib-ute analysis by frequency division may determine the distribution range of major oil -bearing layers and the position of overlap line. The structure of the major oil-bearing layers may be described and the drilling target may be determined by log-constrained in-version method. Remarkable effects have been achieved by ap-plying these techniques in the area.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2008年第3期50-53,共4页
Petroleum Geology and Recovery Efficiency
关键词
地层超覆油藏
地震描述
东营组
陈家庄凸起
stratigraphic overlap oil reservoir,seismic descrip-tion,Dongying Formation,Chenjiazhuang Uplift
