垂直定向裂縫介質(zhì)的地震波特性與流體預(yù)測研究.pdf

1、成都理工大學(xué)碩士學(xué)位論文垂直定向裂縫介質(zhì)的地震波特性與流體預(yù)測研究姓名：寧忠華申請學(xué)位級別：碩士專業(yè)：地球探測與信息技術(shù)指導(dǎo)教師：賀振華黃德濟(jì)20060501SeismicwavepropertyoftheverticaldirectionalfracturemediumandthefluidpredictionABSTRACTWhenashearwavetransmitsinthefractureitwiUsplitintoSHwav

2、eandSVwave111esplitincludesthevailationofthepolarizationdirectionandtheenergydistributionTheenergyisrelatedtotheanglebetweentheinitialpolarizationdirectionoftheshearwaveandthetransmissiondirectionoftheshearwaveInthepaper

3、withtherelationsbetweenthevelocitiesandattenuationcoefficientofquasilongitudinalwaveandtwoquasishearwavesandthefracturecharacteristicsintheverticaldirectionalfracturemedium。wecalculatesomefracturemodelsanddescribetheinfl

4、uenceofthevelocitiesandtheattenuationcoefficientsduetofracturedensityincidentangleandfractureaspectratioAfterthat，weanalyzethevariationalrulewiththechangesoffracturecharacteristiCS，discussandsummarizethepropagationcharac

5、teristicsofseismicwavesintheEDAmediumTherefore，seismicwavevelocityandattenuationmaybemucheffectiveinthefluidpredictionIt’SoneimportantgoalofreservoirpredictiontoidentifythefluidcontentinthestratumusingseismicdataThepaper

6、summarizesandclassifiesthefluididentificationfactorsintheformofthepowerofparameterdimension，thenobtainsageneralizedfunctionoffluididentificationfactorsThefunctionisbasedontheP—waveimpedanceandtheSwaveimpedanceinordertose

7、lectdifferentfluididentificationfactorwimtheexistingimpedanceinformationfromdifferentdemandsFromtheGassmann’Srelation，thepaperanalysestheimpactsofelasticparameters，velocitiesandimpedancestotherockfilledwithdifferentfluid

8、contents，andconfirmswhichparameterissensitive，moresensitiveornosensitivetothefluidcontentsBasedonthis，thepaperproposesanewhighsensitivefluididentificationfactor(盯HSFlF)Takingexampleforwetsandstoneandgassandstone，thepaper

9、comparesthefluidsensitivitytodifferentfluididentificationfactorsTheresultshowsthat盯HSFIFismoresensitivetothefluidcontentsthantheothersUsingtheideaandthemethodof盯HSFIFanewfluididentiflcationfactorcanbeconstructedfordemand