井震约束下的高分辨率层序地层学对比方法及其应用
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摘要
为了解决油田内、油田间、洼陷间、凹陷间的地层划分和对比问题,针对地震资料纵向分辨率低和高分辨率层序地层对比难以在平面上进行连续追踪的缺点,提出了井震约束下的高分辨率层序地层学对比方法。该方法共包括5步:进行研究区地震反射界面的研究;建立地质分层与地震反射界面的关系;地震层序的划分及地震层序对比;在井震约束下进行层序划分和长期基准面旋回识别;进行中期和短期基准面旋回的识别。在南堡凹陷高尚堡、柳赞、唐海3个油田进行了应用并取得了较好的效果,找出了3个油田间地层的对应关系,实现了3个油田间大层和小层的统一划分。
In order to deal with stratigraphic division and correlation within a oilfield or among oilfields,sags and depressions,the method of high resolution sequence stratigraphic correlation constrained by well-seismic data was put forward so as to overcome the shortcomings of the poor vertical resolution of seismic data and the difficulty of successive pursuit of high resolution sequence in laterally.The method can be divided into 5 steps:researching seismic reflective boundary in the studied area,establishing the relation between geology laminate and seismic reflective boundary,classifying and correlating seismic sequence, identifying sequence and long-term base level cycles,identifying medium-term and short-term base level cycles.Good result was achieved after the application in the Gaoshangpu,Liuzan and Tanghai oilfields in the Nanpu Depression.The correspondent relationships were found and unified strata classification among the fields was achieved.
In order to deal with stratigraphic division and correlation within a oilfield or among oilfields,sags and depressions,the method of high resolution sequence stratigraphic correlation constrained by well-seismic data was put forward so as to overcome the shortcomings of the poor vertical resolution of seismic data and the difficulty of successive pursuit of high resolution sequence in laterally.The method can be divided into 5 steps:researching seismic reflective boundary in the studied area,establishing the relation between geology laminate and seismic reflective boundary,classifying and correlating seismic sequence, identifying sequence and long-term base level cycles,identifying medium-term and short-term base level cycles.Good result was achieved after the application in the Gaoshangpu,Liuzan and Tanghai oilfields in the Nanpu Depression.The correspondent relationships were found and unified strata classification among the fields was achieved.
引文
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[13]王玉满,袁选俊,黄祖熹.渤海湾盆地南堡凹陷新近系馆陶组沉积特征[J].古地理学报,2003,5(4):404-413.
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[17]邱桂强.陆相断陷盆地高精度层序地层研究现状与思路[J].油气地质与采收率,2005,12(3):1-4,8.
[2]庞雯,郭德运,赵靖舟.陕北甘谷驿油田东区延长组长6油层沉积相特征[J].西安石油大学学报:自然科学版,2004,19 (5):25-27.
[3]王世坤,胥菊珍,王欲晓,等.前梨园环洼沙三段层序特征与岩性油气藏分布[J].西南石油学院学报,2003,25(5):16-18.
[4]董贵能,姜在兴,张本琪,等.济阳坳陷埕东-飞雁滩油田新近系馆上段层序地层研究[J].西安石油大学学报:自然科学版, 2004,19(1):1-5.
[5]刘波,赵翰卿,于会宇.储集层的两种精细对比方法讨论[J].石油勘探与开发,2001,28(6):94-96.
[6]罗群,郑德山,孙宏智.地质-地震综合对比方法及应用[J].江汉石油学院学报,2001,23(1):26-28.
[7]王西文,苏明军,王大兴.相控等时小层对比方法及应用[J].石油勘探与开发,2003,30(6):78-80.
[8]刘星,陆友明,程守田.垦西油田馆陶组河流沉积高分辨率层序地层研究[J].沉积学报,2002,20(1):103-105.
[9]方石,刘招君,胡显辉.松辽盆地布海合隆地区泉头组河流相层序地层学特征[J].石油实验地质,2003,25(1):33-36.
[10]Shanlley K W,Mecabe P J.Respectives on the sequence stratigraphy of continental strata[J].AAPG Bulletin,1994,75(4):544- 568.
[11]李顺明.相控旋回高精度成因地层对比方法及应用[J].油气地质与采收率,2008,15(1):22-25.
[12]单宝忠.基准面原理在陆相高分辨率层序地层对比作图中的应用[J].油气地质与采收率,2006,13(3):25-27.
[13]王玉满,袁选俊,黄祖熹.渤海湾盆地南堡凹陷新近系馆陶组沉积特征[J].古地理学报,2003,5(4):404-413.
[14]朱文春,宋鹕,高印军.港东油田—区河流相储集层滚动勘探方法[J],石油勘探与开发,2004,31(1):73-75.
[15]袁选俊,薛叔浩,王克玉.南堡凹陷第三系沉积特征及层序地层学研究[J].石油勘探与开发,1994,21(4):87-94.
[16]国景星,王永诗.济阳坳陷新近系层序地层及沉积体系[J].油气地质与采收率,2006,13(6):9-12.
[17]邱桂强.陆相断陷盆地高精度层序地层研究现状与思路[J].油气地质与采收率,2005,12(3):1-4,8.
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