杏北油田高弯度分流河道储层构型特征和剩余油分布模式
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摘要
以杏北油田密井网区高弯度分流河道储层为例,基于储层构型理论沉积模式,采用层次分析法,按复合河道、单河道、点坝、点坝内部侧积体四个层次对储层构型进行精细解剖,并在基于密闭取心井和水淹层测井解释的"静态剩余油分析"与基于三维构型模型油藏数值模拟的"动态剩余油分析"的相互验证下,总结高弯度分流河道储层剩余油分布模式。结果表明:在河道内,剩余油主要分布于点坝上部;在河道外,剩余油主要分布于点坝顶部和废弃河道遮挡的部位、注采系统不完善的溢岸砂体末端和孤立溢岸砂体内以及动用程度较差的薄层溢岸砂体中。
Taking the high-sinuosity distributary-channel reservoir in the close well-spacing block of Xingbei Oilfield as an example,based on the depositional model of the reservoir architecture theory,with the help of analytical hierarchy process,the reservoir architectures were analyzed in detail in the following four aspects: channel complex,individual channel,point bar and lateral accretion body within the point bar,on the basis of the mutual verification of "the static remained oil analysis"interpreted by the close coring well and watered well logging and " the dynamic remained oil analysis" conducted by the numerical simulation of 3D architectural-element model oil reservoir,the distributed modes of the remained oil in the high-sinuosity distributary-channel reservoir were summarized.The achievements show that within the channel,the remained oil are primarily distributed on the upper part of thepoint bar; while outside the channel,the remained oil are mainly on the top of the point bar and the blocked part by the abandoned channel,the dead-ends of the overbank sandbody and the isolated overbank sandbody with the inefficient injection-production system,and moreover the thin-bedded overbank sandbody with much poorer developed degree.
Taking the high-sinuosity distributary-channel reservoir in the close well-spacing block of Xingbei Oilfield as an example,based on the depositional model of the reservoir architecture theory,with the help of analytical hierarchy process,the reservoir architectures were analyzed in detail in the following four aspects: channel complex,individual channel,point bar and lateral accretion body within the point bar,on the basis of the mutual verification of "the static remained oil analysis"interpreted by the close coring well and watered well logging and " the dynamic remained oil analysis" conducted by the numerical simulation of 3D architectural-element model oil reservoir,the distributed modes of the remained oil in the high-sinuosity distributary-channel reservoir were summarized.The achievements show that within the channel,the remained oil are primarily distributed on the upper part of thepoint bar; while outside the channel,the remained oil are mainly on the top of the point bar and the blocked part by the abandoned channel,the dead-ends of the overbank sandbody and the isolated overbank sandbody with the inefficient injection-production system,and moreover the thin-bedded overbank sandbody with much poorer developed degree.
引文
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[18]刘波,赵翰卿,王良书,等.古河流废弃河道微相的精细描述[J].沉积学报,2001,19(3):394-398.
[19]马世忠,杨清彦.曲流点坝沉积模式、三维构形及其非均质模型[J].沉积学报,2000,18(2):241-247.
[20]Shepherd M.Oil Field Production Geology:Where hydrocarbons can be left behind[J].AAPG,2009:211-215.
[21]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(D辑:地球科学),2008,38(增刊1):111-121.
[22]白振强,王清华,杜庆龙,等.曲流河砂体三维构型地质建模及数值模拟研究[J].石油学报,2009,30(6):898-902.
[23]岳大力,吴胜和,程会明,等.基于三维储层构型模型的油藏数值模拟及剩余油分布模式[J].中国石油大学学报(自然科学版),2008,32(2):21-27.
[2]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,2012:114-131.
[3]Miall A D.Architectural-Element Analysis:A new method of facies analysis applied to fluvial deposits[J].Earth-Science Reviews,1985,22(4):261-308.
[4]何宇航,于开春.分流平原相复合砂体单一河道识别及效果分析[J].大庆石油地质与开发,2005,24(2):17-19.
[5]闫百泉,张鑫磊,于利民,等.基于岩心及密井网的点坝构型与剩余油分析[J].石油勘探与开发,2014,41(5):597-604.
[6]尹艳树,张昌民,尹太举,等.三角洲平原高弯曲分流河道内部结构单元三维建模[J].地质论评,2013,59(3):544-550.
[7]张昌民,尹太举,喻辰,等.基于过程的分流平原高弯河道砂体储层内部建筑结构分析:以大庆油田萨北地区为例[J].沉积学报,2013,31(4):653-662.
[8]张绍臣,李臣,贾培宜,等.萨南油田南二区曲流型分流河道砂体建筑结构及剩余油挖潜[J].东北石油大学学报,2009,33(4):27-30.
[9]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.
[10]贾珍臻,林承焰,董春梅,等.大庆升平油田葡萄花油层葡一油组浅水三角洲储层构型研究[J].中国石油大学学报(自然科学版),2014,38(6):9-17.
[11]阎百泉,张树林,施尚明,等.大庆油田萨北二类油层非均质特征[J].大庆石油学院学报,2005,29(1):15-17.
[12]隋军.大庆油田河流-三角洲相储层研究[M].北京:石油工业出版社,2000:59-80.
[13]于兴河.碎屑岩系油气储层沉积学[M].北京:石油工业出版社,2008:275-282.
[14]Ford G L,Pyles D R.A hierarchical approach for evaluating fluvial systems:Architectural analysis and sequential evolution of the high net-sand content,middle Wasatch Formation,Uinta Basin,Utah[J].AAPG Bulletin,2014,98(7):1273-1303.
[15]尹太举,张昌民,汤军,等.马厂油田储层层次结构分析[J].江汉石油学院学报,2001,23(4):19-21.
[16]尹太举,张昌民,赵红静,等.复杂断块区高含水期剩余油分布预测[J].石油实验地质,2004,26(3):267-272.
[17]张昌民,尹太举,赵磊,等.辫状河储层内部建筑结构分析[J].地质科技情报,2013,32(4):7-13.
[18]刘波,赵翰卿,王良书,等.古河流废弃河道微相的精细描述[J].沉积学报,2001,19(3):394-398.
[19]马世忠,杨清彦.曲流点坝沉积模式、三维构形及其非均质模型[J].沉积学报,2000,18(2):241-247.
[20]Shepherd M.Oil Field Production Geology:Where hydrocarbons can be left behind[J].AAPG,2009:211-215.
[21]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(D辑:地球科学),2008,38(增刊1):111-121.
[22]白振强,王清华,杜庆龙,等.曲流河砂体三维构型地质建模及数值模拟研究[J].石油学报,2009,30(6):898-902.
[23]岳大力,吴胜和,程会明,等.基于三维储层构型模型的油藏数值模拟及剩余油分布模式[J].中国石油大学学报(自然科学版),2008,32(2):21-27.
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