喇萨杏油田不同类型砂体井震结合成因层序地层对比
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摘要
受多物源、沉积旋回影响,建立精准、合理的油田级精细等时地层格架难度较大。针对小层等时地层对比难以在平面上连续追踪的缺点,提出了井震结合成因层序地层对比方法。以大庆长垣北部萨尔图油层为例,综合运用岩心、测井和地震等资料,从层序地层发育成因模式分析入手,采用"地震同相轴引导标志层空间展布趋势,井分层精准刻画各层面空间位置"的方法,建立了萨尔图油层Ⅱ油层组(SⅡ)沉积单元级精准等时地层格架。研究发现,萨尔图油层Ⅱ油层组9小层(SⅡ9)为一套较为稳定的区域性隔层,尤其在喇萨杏油田(喇嘛甸油田、萨尔图油田、杏树岗油田),将1～9小层(SⅡ1～9)与10～16小层(SⅡ10～16)分隔成2套不同的储层结构体系。
It is difficult to precisely and reasonably establish a fine isochronous stratigraphic framework for oilfields due to the influence of multiple sources and sedimentary cycles.In view of the shortcomings of tracing the small stratum continuously on the plane for isochronous stratigraphic correlation,the method for genetic sequence stratigraphic correlation by combination is put forward.This paper takes Sa'ertu reservoir in the north of Daqing Placanticline Oilfield as an example,and establishes fine isochronous stratigraphic framework of sedimentary unit for SⅡreservoir group based on the comprehensive application of core,logging and seismic data by analyzing the genesis of sequence stratiographic development,the method of"seismic phase axes guiding the spatial distribution trend and well stratification for accurately depicting the spatial position of each layer".The result shows SⅡ9 is a relatively stabilized regional interlayer,especially in Lamadian and Sa'ertu Oilfields,SⅡ1～9 and SⅡ10～16 are divided into 2 different reservoir structures.
It is difficult to precisely and reasonably establish a fine isochronous stratigraphic framework for oilfields due to the influence of multiple sources and sedimentary cycles.In view of the shortcomings of tracing the small stratum continuously on the plane for isochronous stratigraphic correlation,the method for genetic sequence stratigraphic correlation by combination is put forward.This paper takes Sa'ertu reservoir in the north of Daqing Placanticline Oilfield as an example,and establishes fine isochronous stratigraphic framework of sedimentary unit for SⅡreservoir group based on the comprehensive application of core,logging and seismic data by analyzing the genesis of sequence stratiographic development,the method of"seismic phase axes guiding the spatial distribution trend and well stratification for accurately depicting the spatial position of each layer".The result shows SⅡ9 is a relatively stabilized regional interlayer,especially in Lamadian and Sa'ertu Oilfields,SⅡ1～9 and SⅡ10～16 are divided into 2 different reservoir structures.
引文
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[2]裘怿楠,薛叔浩.油气储层评价技术[M].北京:石油工业出版社,1998:58～124.
[3]Cross T A.Stratigraphic architecture,correlationconcepts,volumetric partioning,facies differtiation,and reservoir compartmentalization from the perspective of high-resolution sequence stratigraphy[A].Research Report of the Genetic Stratigraphy Research Group[C].Dggecsm,1994:28～41.
[4]邓宏文,王洪亮,李熙哲.层序地层基准面的识别,对比技术及应用[J].石油与天然气地质,1996,17(3):177～184.
[5]Mail A D.Architectural-element analysis:a new method of facies applied to fluvial deposits[J].Earth Sci Rev,1985,22:261～308.
[6]吴常玉,肖淑明,王立军.井震约束下的高分辨率层序地层学对比方法及其应用[J].油气地质与采收率,2009,16(3):61～65.
[7]渠芳,陈清华,连承波.河流相储层细分对比方法探讨[J].西安石油大学学报 (自然科学版),2008,23(1):17～21.
[8]赵翰卿.大庆油田精细储层沉积学研究[M].北京:石油工业出版社,2011:32～238.
[9]郝兰英,郭亚杰,李杰,等.地震沉积学在大庆长垣密井网条件下储层精细描述中的初步应用[J].地学前缘,2012,19(2):81～86.
[10]姜岩,李纲,刘文岭.基于地震解释成果的地震建模技术及应用[J].大庆石油地质与开发,2004,23 (5):115～117.
[11]蔡东梅,郝兰英,郭亚杰,等.地震沉积学在水下分流河道砂体预测中的应用[J].中南大学学报(自然科学版),2016,47(3):850～856.
[12]纪友亮,吴胜和,张锐,等.自旋回和异旋回的识别及其在油藏地层对比中的作用[J].中国石油大学学报(自然科学版),2012,36(4):1～6.
[13]胡光明,王军,纪友亮,等.河流相层序地层模式与地层等时对比[J].沉积学报,2010,28(4):745～751.
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