济阳拗陷堡坝砂体的识别及其地球物理特征
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摘要
堡坝发育区由于湖浪和岸流水介质能量较高 ,碎屑沉积物长期经受冲刷 ,所以堡坝砂体油气储集物性极好 ,是油气藏勘探的重要目标之一 ,但其识别较难。测井曲线的韵律特征为识别砂体的不同发育部位提供了直接依据 ,其韵律特征的组合又进一步反映了湖岸的变迁及砂体的发生、发展和消亡的全过程。本文对比现代堡坝砂体的结构特征 ,利用测井曲线的堡坝砂体特征 ,首次提出了济阳拗陷广利—八面河地区的砂体为古堡坝砂体 ,并首次将时频分析技术和沉积相分析技术运用于对古堡坝砂体的识别 ,不仅验证了该区堡坝砂体的存在 ,而且还发现了车西凹陷的堡坝砂体。广利—八面河油田为亿吨级大油田 ,属古堡坝砂岩储层油气藏 ,这对于扩大济阳拗陷油气勘探的类型具有积极意义。
Because of higher energy of lake wave and ru- nning water medium in barrier-bar-developed zone and eroded clastic sediments for a long period,the barrier bar sand body has excellent oil/gas accumulation characters,which is one of important targets of reservoir exploration but difficult to be identified.The rhythm feature of logging curves provided direct basis for identification of sand body in different developed parts,the composition of rhythm feature also further reflected the changes of lakeshore and whole process that the sand body generated,developed and died out.After correlation of the structural feature of current barrier bar sand body and using the characters of logging curves of barrier bar sand body,the paper first presented that the sand body in Guangli-Bamianhe region is palaeo-barrier bar sand body and firstly using time-frequency analysis technique and sedimentary facies analysis technique for identification of palaeo-barrier bar sand body,that not only verified the existence of barrier bar sand body in the region,but also found barrier bar sand body in Chexi depression.The Guangli-Bamianhe oilfield belongs a hundred million ton oilfield and the reservoir having palaeo-barrier bar sand body type,which has active meaning for expanding types of oil/gas exploration in Jiyang Depression.
Because of higher energy of lake wave and ru- nning water medium in barrier-bar-developed zone and eroded clastic sediments for a long period,the barrier bar sand body has excellent oil/gas accumulation characters,which is one of important targets of reservoir exploration but difficult to be identified.The rhythm feature of logging curves provided direct basis for identification of sand body in different developed parts,the composition of rhythm feature also further reflected the changes of lakeshore and whole process that the sand body generated,developed and died out.After correlation of the structural feature of current barrier bar sand body and using the characters of logging curves of barrier bar sand body,the paper first presented that the sand body in Guangli-Bamianhe region is palaeo-barrier bar sand body and firstly using time-frequency analysis technique and sedimentary facies analysis technique for identification of palaeo-barrier bar sand body,that not only verified the existence of barrier bar sand body in the region,but also found barrier bar sand body in Chexi depression.The Guangli-Bamianhe oilfield belongs a hundred million ton oilfield and the reservoir having palaeo-barrier bar sand body type,which has active meaning for expanding types of oil/gas exploration in Jiyang Depression.
引文
王衍民,陈世英.广利—八面河地区油藏勘探与实践.胜利油田物探公司内部资料,1982
史文东,姜祥.广利油田油藏储层前期综合评价.胜利油田东辛采油厂内部资料,1999
陈世悦等.济阳拗陷下第三系沉积模式与沉积体系分布演化(济阳拗陷下第三系沉积体系与油气运聚机理研究项目专题成果报告),200
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[3] KroonenbergS B et al.A full sea- level cycle in65years:barrier dynamics alongCaspian shores.SedimentaryGeology,2000,(134):257～274
[4] FitzGeraldD M et al.Sand dynam ics at the mouth ofa rock- bound,tide- dominated estuary.SedimentaryGeology,2000,(131):25～49
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[8] 张一伟.油气田勘探.东营:华东石油学院,1981,82～84
[9] 郭荣坤等.测井沉积学解释计算机辅助系统.北京:石油工业出版社,1996,1～105
[10] 理查德C赛利.地下相分析的概念和方法.北京:石油工业出版社,1981,3
[11] 于建国.沙砾岩体的内部结构研究与含油性预测.石油地球物理勘探,1997,32(增刊1):16～19
[12] 姜秀清,于建国.时频分析在地震资料解释中的应用.复式油气田,1999,4
史文东,姜祥.广利油田油藏储层前期综合评价.胜利油田东辛采油厂内部资料,1999
陈世悦等.济阳拗陷下第三系沉积模式与沉积体系分布演化(济阳拗陷下第三系沉积体系与油气运聚机理研究项目专题成果报告),200
[1] 郑浚茂等.不同沉积环境储层的层内非均质性——以黄骅拗陷为例.现代地质,1995,9(4):501～508
[2] SwiftD JP.Barrier- island genesis,evidence from thecentralAtlantic shelf,EasternU S A.SedimentaryGeology,1975,14:1～43
[3] KroonenbergS B et al.A full sea- level cycle in65years:barrier dynamics alongCaspian shores.SedimentaryGeology,2000,(134):257～274
[4] FitzGeraldD M et al.Sand dynam ics at the mouth ofa rock- bound,tide- dominated estuary.SedimentaryGeology,2000,(131):25～49
[5] DonselaarM E.Barrier island coasts and relative sea-level rise,preservation potential,facies architectureand sequence analysis.PhD thesis(unpubl),DelftUniversity ofTechnology,1996
[6] Van dV L.Mid- andL ateHolocene coastal evolutionin the beach- barrier area of theWesternNetherlands.PhD thesis,VrijeUniversiteit,Amsterdam,1992
[7] 李兴国.陆相储层沉积微相与微型构造.北京:石油工业出版社,2000,42～45
[8] 张一伟.油气田勘探.东营:华东石油学院,1981,82～84
[9] 郭荣坤等.测井沉积学解释计算机辅助系统.北京:石油工业出版社,1996,1～105
[10] 理查德C赛利.地下相分析的概念和方法.北京:石油工业出版社,1981,3
[11] 于建国.沙砾岩体的内部结构研究与含油性预测.石油地球物理勘探,1997,32(增刊1):16～19
[12] 姜秀清,于建国.时频分析在地震资料解释中的应用.复式油气田,1999,4
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