长轴缓坡辫状河三角洲前缘储层构型研究
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摘要
为了探讨长轴缓坡辫状河三角洲前缘储层构型模式,采用层次界面分析及"层次约束,模式拟合,多维互动"的构型表征方法对长轴缓坡背景下的辫状河三角洲前缘不同级次的构型进行精细解剖,得出在不同构造背景下三角洲储层构型样式具有较大的差异性。研究表明:辫状河三角洲前缘主要发育分流水道、河口坝、席状砂等构型要素,其中6级、7级、8级及9级界面限定的构型单元分别为单层微相复合体、单一微相复合体、单一微相、微相内部增生体。不同级次的构型单元具有不同的叠置样式和识别依据。在对多级构型要素定性定量识别基础上,建立了以分流水道与河口坝为主体的长轴缓坡辫状河三角洲前缘储层构型模式。
The hierarchy bounding surface method,hierarchical constraint,model fitting,and multi-dimensional interaction have been applied to investigate reservoir architecture of braided delta front on gentle slope.Results show:different hierarchical architecture elements in braided delta fronts.The studied area mainly develops distributed channel,mouth bar,sheet-shape sand,among which are the compound of micro-facies within a single layer,compound of single micro-facies,single micro-facies and accretion inside the micro-facies are separately defined by the 6th,7th,8th and 9th architecture boundary surfaces.Different hierarchy architecture elements have significant difference on overlapping patterns.On the basis of qualitative and quantitative identification of multi-stage configuration elements,three dimensional architecture model of braided delta front develops in the long axis of gentle slope,which is dominated by distributary channel and mouth bar,has been set up.
The hierarchy bounding surface method,hierarchical constraint,model fitting,and multi-dimensional interaction have been applied to investigate reservoir architecture of braided delta front on gentle slope.Results show:different hierarchical architecture elements in braided delta fronts.The studied area mainly develops distributed channel,mouth bar,sheet-shape sand,among which are the compound of micro-facies within a single layer,compound of single micro-facies,single micro-facies and accretion inside the micro-facies are separately defined by the 6th,7th,8th and 9th architecture boundary surfaces.Different hierarchy architecture elements have significant difference on overlapping patterns.On the basis of qualitative and quantitative identification of multi-stage configuration elements,three dimensional architecture model of braided delta front develops in the long axis of gentle slope,which is dominated by distributary channel and mouth bar,has been set up.
引文
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[11]石占中,纪友亮.湖平面频繁变化环境下的扇三角洲沉积:以黄骅坳陷枣园油田孔一段沉积为例[J].西安石油学院学报(自然科学版),2002,17(1):24-27.SHI Zhanzhong,JI Youliang.Fan-delta sedimentation formed under the environment of lake level frequently varying---taking the first member of Kongdian Formation,Huanghua Depression as an example[J].Journal of Xi’an Petroleum Institute(Natural Science Edition),2002,17(1):24-27.(in Chinese)
[12]吴胜和.储层表征与建模[M].北京:石油工业出版社,2010:136-170.WU Shenghe.Reservoir characterization and modeling[M].Beijing:Petroleum Industry Press,2010:136-170.(in Chinese)
[2]于兴河,李胜利,李顺利.三角洲沉积的结构---成因分类与编图方法[J].沉积学报,2013,31(5):782-797.YU Xinghe,LI Shengli,LI Shunli.Texture-genetic classifications and mapping methods for deltaic deposits[J].Acta Sedimentologica Sinica,2013,31(5):782-797.(in Chinese)
[3]于兴河,王德发,孙志华.湖泊辫状河三角洲岩相、层序特征及储层地质模型---内蒙古贷岱海湖现代三角洲沉积考察[J].沉积学报,1995,13(1):48-58.YU Xinghe,WANG Defa,SUN Zhihua.Lithofacies types,vertical profile features and reservoir geological models of braided deltaic sand bodies in faulted lake basin---the observation on deposition of modern deltas in Daihai lake,Inner Mongolia[J].Acta Sedimentologica Sinica,1995,13(1):48-58.(in Chinese)
[4]ANDREW M.The geology of fluvial deposits[M].Berlin:Springer-Verlag,1996:75-178.
[5]吴胜和,岳大力,刘建民,等.地下古河道储层构型的层次建模研究[J].中国科学,2008,38(S1):111-121.WU Shenghe,YUE Dali,LIU Jianmin,et al.Hierarchical modeling of reservoir configuration in underground rivers[J].Scientia Sinica Terrae,2008,38(S1):111-121.(in Chinese)
[6]周银邦,吴胜和,岳大力,等.分流河道砂体构型分析方法在萨北油田的应用[J].西安石油大学学报(自然科学版),2008,23(5):6-10.ZHOU Yinbang,WU Shenghe,YUE Dali,et al.Application of the architectural analysis method of distributary sand-body in Sabei Oilfield[J].Journal of Xi’an Shiyou University(Natural Science Edition),2008,23(5):6-10.(in Chinese)
[7]李云海,吴胜和,李艳平,等.三角洲前缘河口坝储层构型界面层次表征[J].石油天然气学报,2007,29(6):49-52.LI Yunhai,WU Shenghe,LI Yanping,et al.Hierarchical boundary characterization of delta front mouth bar reservoir architecture[J].Journal of Oil and Gas Technology,2007,29(6):49-52.(in Chinese)
[8]温立峰,吴胜和,王延忠,等.河控三角洲河口坝地下储层构型精细解剖方法[J].中南大学学报(自然科学版),2011,42(4):1072-1078.WEN Lifeng,WU Shenghe,WANG Yanzhong,et al.An accurate method for anatomizing architecture of subsurface reservoir in mouth bar of fluvial dominated delta[J].Journal of Central South University(Science and Technology),2011,42(4):1072-1078.(in Chinese)
[9]辛治国.河控三角洲河口坝构型分析[J].地质评论,2012,54(4):527-531.XIN Zhiguo.Architecture analyses of debouch bar of fluvial dominated delta[J].Geological Review,2012,54(4):527-531.(in Chinese)
[10]林承焰,刘泽容,邓俊国.黄骅坳陷南部枣园油田下第三系孔店组一段沉积模型[J].地质论评,1993,39(7):41-46.LIN Chengyan,LIU Zerong,DENG Junguo.A sedimentary model for the palaeogene of the first member of the Kongdian Formation in the Zaoyuan Oil Field in the southern part of the Huanghua Depression[J].Geological Review,1993,39(7):41-46.(in Chinese)
[11]石占中,纪友亮.湖平面频繁变化环境下的扇三角洲沉积:以黄骅坳陷枣园油田孔一段沉积为例[J].西安石油学院学报(自然科学版),2002,17(1):24-27.SHI Zhanzhong,JI Youliang.Fan-delta sedimentation formed under the environment of lake level frequently varying---taking the first member of Kongdian Formation,Huanghua Depression as an example[J].Journal of Xi’an Petroleum Institute(Natural Science Edition),2002,17(1):24-27.(in Chinese)
[12]吴胜和.储层表征与建模[M].北京:石油工业出版社,2010:136-170.WU Shenghe.Reservoir characterization and modeling[M].Beijing:Petroleum Industry Press,2010:136-170.(in Chinese)