惠民凹陷临南地区分流河道砂体描述
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摘要
分流河道砂体是临南油田重要的勘探开发目标,可分为水上和水下2种类型。运用正演模拟、地质统计、地震相分析等技术手段,分析了分流河道砂体的地震反射特征,划分了三角洲平原亚相和前缘亚相的分布范围,总结了分流河道砂体的分布规律。研究表明:临南地区水下分流河道砂体主要发育在三角洲前缘亚相,其地震反射特征为连续性相对较好的中—强反射,厚度中心在街3井—夏53井之间;水上分流河道砂体发育在三角洲平原亚相,地震反射特征为短轴状—杂乱反射,中—弱振幅,连续性差—中等,尖灭点不易分辨识别,主要分布在街3井以南的地区。
Distributary channel sandybodies are the important objects for exploration and development in Linnan Oilfield,which can be di-vided into above water and under water two types. Forward mod-eling,geologic statistics and seismic facies analysis methods were applied to analyzing the seismic reflection characteristics of the distributary channel sandybodies and identifying the distribution range of delta plain and front delta intrafacies. Distribution rules of the distributary channel sandybodies were realized. The under-water sandbodies distribute mainly at the front delta intrafacies,and its seismic reflection is relatively continuous and medium -strong degree. The centre of the deposit is between J3 and X53 wells. The sandbodies above water mainly distribute at delta plain intrafacies with short and disarray seismic reflection,medi-um-weak amplitude and weak-medium continuity. It is difficult to identify the pitchout,which distributes mainly at south to Jie3 well.
Distributary channel sandybodies are the important objects for exploration and development in Linnan Oilfield,which can be di-vided into above water and under water two types. Forward mod-eling,geologic statistics and seismic facies analysis methods were applied to analyzing the seismic reflection characteristics of the distributary channel sandybodies and identifying the distribution range of delta plain and front delta intrafacies. Distribution rules of the distributary channel sandybodies were realized. The under-water sandbodies distribute mainly at the front delta intrafacies,and its seismic reflection is relatively continuous and medium -strong degree. The centre of the deposit is between J3 and X53 wells. The sandbodies above water mainly distribute at delta plain intrafacies with short and disarray seismic reflection,medi-um-weak amplitude and weak-medium continuity. It is difficult to identify the pitchout,which distributes mainly at south to Jie3 well.
引文
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[7]于建国,林春明,杨云岭,等.分流河道特征及其识别方法:以东营凹陷东部地区为例[J].高校地质学报,2002,8(2):152-159.
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[9]李淑筠,高彦楼,唐振海,等.扶杨油层砂体综合预测技术[J].大庆石油地质与开发,2002,21(4):11-13.
[10]岳延波,马洪,李慧勇.辽河滩海仙鹤地区东三段水下分流河道沉积体的地震多参数识别[J].大庆石油地质与开发,2006,25(3):97-99.
[11]赵密福,信荃麟,刘泽容.惠民凹陷临南洼陷滑塌浊积岩分布规律及其控制因素[J].油气地质与采收率,2001,8(5):14-17.
[2]付金华,刘玉亮,刘金,等.临南地区断层输导体系与油气成藏模式[J].油气地质与采收率,2002,9(3):55-58.
[3]韩天佑,漆家福,杨桥,等.惠民凹陷临南地区第三系油气运移聚集特征研究[J].油气地质与采收率,2003,10(6):21-23.
[4]刘玉亮,陈红汉,刘金,等.临南地区沙三段砂岩体及其成藏特征[J].特种油气藏,2003,10(4):10-13.
[5]李维锋,高振中,彭德堂,等.胜利油田渤南洼陷古近系沙河街组沉积相[J].沉积与特提斯地质,2002,22(2):24-30.
[6]王新征.东营凹陷王家岗地区沙二段上部水道砂体成因类型及空间展布特征[J].江汉石油学院学报,2004,26(3):46-47.
[7]于建国,林春明,杨云岭,等.分流河道特征及其识别方法:以东营凹陷东部地区为例[J].高校地质学报,2002,8(2):152-159.
[8]毕俊凤,刘书会,陈学国,等.分频解释技术在桩106地区馆上段河道砂体描述中的应用[J].油气地质与采收率,2003,10(5):38-40.
[9]李淑筠,高彦楼,唐振海,等.扶杨油层砂体综合预测技术[J].大庆石油地质与开发,2002,21(4):11-13.
[10]岳延波,马洪,李慧勇.辽河滩海仙鹤地区东三段水下分流河道沉积体的地震多参数识别[J].大庆石油地质与开发,2006,25(3):97-99.
[11]赵密福,信荃麟,刘泽容.惠民凹陷临南洼陷滑塌浊积岩分布规律及其控制因素[J].油气地质与采收率,2001,8(5):14-17.
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