基于地震正演模拟的地层超覆线识别及刻画技术  

Stratigraphic overlap line identification and description method based on seismic forward modeling

作　　者：张蕾 王军 张中巧 付立 

机构地区：[1]中海石油(中国)有限公司勘探部,北京100010 [2]中海石油(中国)天津分公司渤海油田勘探开发研究院

出　　处：《石油地质与工程》2014年第4期58-61,155,共4页Petroleum Geology and Engineering

基　　金：国家科技重大专项"近海隐蔽油气藏勘探技术"(2008ZX05023-002)课题部分研究成果

摘　　要：地震描述中根据地震反射特征追踪的超覆线与实际地层油藏的超覆线不一致,地层超覆线识别及刻画是地层油藏勘探成功的关键。在地震地质一体化研究思路下,通过古地貌精细分析及物源体系研究,明确地层超覆带及构造-地层型圈闭发育的有利区带;在此基础上开展精细层序分析,建立等时地层格架,细致分析砂泥岩地震响应特征。综合运用相位分析技术、地震正演模拟技术、地震多属性分析技术等进行地层超覆线的识别及刻画,通过实际资料的应用,较好地刻画出了地层超覆线的位置,取得了良好的勘探成效。In seismic description,the tracking overlap line according to seismic reflection characteristics is not in line with the overlap line of the actual formation reservoir,the stratigraphic overlap line identification and description method is the key to the success of stratigraphic reservoir exploration.Under the guidance of the integration of seismic geological research,through detailed analysis in geomorphology and provenance system research,the favorable targets of stratigraphic overlap belt and structure-stratigraphic trap development have been made clear.On the basis of these,fine sequence analysis has been carried out,then the isochronous stratigraphic framework has been established,and therefore,the sand-shale seismic response characteristics have been analyzed in detail.With the integrated use of phase analysis,seismic forward modeling,seismic attribute analysis technologies,the research on stratigraphic overlap line identification and description method has been carried out.Through the application of practical data,the stratigraphic overlap line position has been better described,and it has obtained the good exploration results.

关 键 词：地层超覆线 相位分析技术 正演模拟 夹角外推法 

分 类 号：P631.445[天文地球—地质矿产勘探]