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1、學(xué)兔兔www.xuetutu.com中國石油勘探第19卷第2期CHINAPETROLEUMEXPLORATION2014年3月DOI:10.3969l/j.issn.1672-7703.2014.02.006疊前疊后地震多屬性反演在牛東潛山油氣檢測中的應(yīng)用秦鳳啟王亞王孟華馮小英邢福松劉浩強賈敬(中國石油華北油田公司地球物理勘探研究院,河北省任丘市062552)摘要:冀中坳陷霸縣凹陷牛東潛山構(gòu)造帶發(fā)現(xiàn)和探明的古潛山油氣藏為古生界寒武系碳酸鹽巖儲層,其儲集空間以孔洞、裂縫為主,物性橫向變化較大。針對潛山及
2、潛山內(nèi)幕碳酸鹽巖儲層非均質(zhì)性較強的難點,開展疊前彈性反演研究,采取疊前彈性阻抗反演技術(shù)、AVO屬性分析技術(shù);并結(jié)合疊后子波分解與重構(gòu)技術(shù),預(yù)測和刻畫儲層縫洞體系的空間分布規(guī)律,劃分儲層發(fā)育有利區(qū)帶,準確預(yù)測裂縫發(fā)育區(qū)、油氣富集區(qū)。該區(qū)實鉆結(jié)果表明,牛東潛山構(gòu)造帶碳酸鹽巖儲層裂縫發(fā)育,油氣顯示良好,證實了碳酸鹽巖儲層特征預(yù)測技術(shù)的有效性。關(guān)鍵詞:碳酸鹽巖;非均質(zhì)性;疊前彈性反演;AVO屬性;子波分解;牛東潛山中圖分類號:P631.4文獻標識碼:AApplicationofPre-stackandPost
3、—stackSeismicMulti—attributeInversionforOilandGasInspectionofNiudongBuriedHillQinFnegqi,WangYa,WangMenghua,F(xiàn)engXiaoying,XingFusong,LiuHaoqiang,JiaJing(GeophysicalExplorationResearchInstituteofPetroChinaHuabeiOilfieMCompany,RengqiuCiHebeiProvince062552)A
4、bstract:TheancientburiedhillhydrocarbonreservoirfoundandproveninNiudongburiedhillstructuralzoneinBaxiansagofJizhongDepressionwasCambriancarbonaterockreservoirofPaleozoicerathorn.Thereservoirspaceismainlycomposedofvugsandfractures,withthephysicalproperty
5、varyinghorizontally.Thestudyofpre·stackelasticinversionwasmadeinthelightofthebottleneckthatbufedhillandbufedhillinnercurtaincarbon~erockreservoirishasastrongheterogeneity.Thepre—stackelasticimpedanceinversiontechnologyandAVOattributeanalysistechnologywe
6、readoptedincombinationwithpost—stackwaveletdecompositionandrestructuretechnologytopredictanddescribethespacedistributionlawofthefractureandvugsystemofthereservoir,dividethefhV0rabledevelopmentzonesofthereservoirandclarifythefracturaldevelopmentzoneandhy
7、drocarbonabundancezone.ThedrillingresultsinthisregionshowthecarbonaterockreservoirofNiudongburiedhillstructuralzoneseesdevelopmentof~actureswithagoodprospectforoilandgas,confirmingefectivenessofthetechnologyforpredictionofcharacteristicsofcarbonaterockr
8、eservoir.Keywords:carbonaterock,heterogeneity,pre·stackelasticinversion,AVOattributes,wavelet,Niudongbufedhill碳酸鹽巖儲層在中國分布廣泛,其油氣儲量也十性十分復(fù)雜,儲層分布規(guī)律難以把握[1-31。針對實際分可觀。碳酸鹽巖儲層的非均質(zhì)性極強,其外部形態(tài)地質(zhì)情況開展疊前彈性反演研究,采取疊前彈性阻抗和內(nèi)部結(jié)構(gòu)極不規(guī)則,縱向上和橫向上變化較快,有反演技