河流相油气储层的井震结合相控随机建模约束方法于兴河1,李胜利1,赵舒2,陈建阳1,侯国伟311中国地质大学(北京)能源学院,北京10008321中国石化华北分公司勘探开发研究院,河南郑州45000631中国海洋石油总公司研究中心,北京100027YuXinghe1,LiShengli1,ZhaoShu2,ChenJianyang1HouGuowei311SchoolofEnergyResources,ChinaUniversityofGeosciences(Beijing),Beijing100083,China21DevelopmentResearchInstituteofNorthChinaBranch,SINOPEC,Zhengzhou450006,ChinaYuXinghe,LiShengli,ZhaoShu,etal1Theconstrainingmethodonstochasticmodelingforfluvialpetroleumreservoircon2trolledbydepositionalfaciesintegratingwellswithseismicdata1EarthScienceFrontiers,2008,15(4):0332041Abstract:Mostofconventionalstudyondepositionalfaciesoffluvialpetroleumreservoirwasonlyonthebasisofwelldata,firstly,thedepositionalmicrofaciesinwellshavebeendivided,thenthesectionsofdepositionalmicrofaciesfromwelltowellhavebeencorrelatedandthemapinplanefinallyhasbeensetuponthecontoursofsedimentaryparameter1Thisindicatesthatchannelbeingmappedonlydependsonwhetherornotsandstoneineachwellandthegeologistsfollowthecourseofpetroleumexploration1However,thepredicationofsand2stoneamongwellscanhavemoreerrors1Themapofdepositionalfacieswhetheritiscorrectdirectlyaffectstheresultofstochasticmodelingcontrolledbyfaciesandpetroleumexploration1Thereforeanewmappingmethodofdepositionalfaciestointegratewellswithseismicdatahasbeenputforward1Namely,tofindsand2bodiesdependsonthedistributionoffluvialsystemanditsresultcanhelptoguidethecourseofpetroleumex2ploration1Thestochasticmodelingcontrolledbyfaciesonthisbasisofthismaphasbeenconstrainedstepbystepinhierarchy1Atthesametime,threefundamentalconstrainingconditionscontrolledbyfacieshaveseenproposed,thoseareasfollows:Firstly,toensure“theorderoffacies”instochasticmodelingisconsistentwithgeologicalrule.Secondly,toensurethestatisticprobabilityofeachmicrofaciesintherealizationofsto2chasticmodelingisconsistentwithitafterthedataofmicrofaciesineachwellbeingdispersedinto3Dgrid.Thirdly,toensurethevariogramofeachmicrofaciesin3Disconsistentwiththequantitivegeologicalknowl2edgedatabase.Hence,themodelingconstrainedbyfaciesischaracterizedbydepositionalformationandgeneticevolutionasguidanceofthestochasticmodeling,processfordepositionalreservoir,sothattheresultsofmod2elingwillbeobtainedtobeverycloseupontherealityofsubsurface摘要:河流相油气储层的研究传统上多是只依据井点资料,先在井上进行沉积相的划分,而后进行剖面相的分析,最后再结合平面沉积参数等值线图编制平面相图,这样往往会造成“见砂画河,吾跟勘探走”的局面,这种平面相图在井间可能存在着较大的误差。然而,平面相图的正确与否直接影响着储层建模中相控的结果。收稿日期:2008202201;修回日期:2008203210基金项目:高等学校博士学科点专项科研基金项目(20050491001)作者简介:于兴河(1958—),男,教授,博士生导师,主要从事油气储层沉积学与建模技术研究工作。E2mail:billyu@cugb1edu1cn---本文来源于网络，仅供参考，勿照抄，如有侵权请联系删除---34于兴河,李胜利,陈建阳,等/地学前缘(EarthScienceFrontiers)2008,15(4)为此作者提出了一种井震结合进行沉积相图编制的新方法,即“以河找砂,指导勘探行”的思路,并在此基础上进行分层次地相控约束随机建模。同时提出相控建模的三个基本的约束条件,即首先要保证随机建模模型的“相序”符合地质规律;其次要保证建模实现的微相分布统计概率与单井沉积微相数据离散化至三维网格后的统计概率相一致;第三要确保三维数据中每种微相的变差函数特征与定量地质知识库一致。因而,从沉积形成与演化的成因角度来指导沉积储层随机建模过程,应用多...