白音查干凹陷三维地震资料整体连片技术及效果

EXPLORATIONTECHNIQUES5455EXPLORATIONTECHNIQUES5657EXPLORATIONTECHNIQUES58-59CHINAPETROLEUMEXPLORATIONABSTRACTmajortargetforexplorationanddevelopment,ofwhichthefaultblocksaresmallandcracked,thefaultplaneissteep,andoilcolumnthicknessissmall.Allthefeaturesrequiremoreaccurateseismicexploration.Tomeettherequirementsofexplorationandexploitation,combinedwiththetrendsofgeophysicaltechnology,weshalllearnfromtherelevantadvancedtechniquesbothathomeandabroadandfocusonhighprecision3Dseismictechniquestotackletheimagingproblemsincomplexfault-blockreservoirs.Finally,aseriesoftechniquesaredevelopedtoimplementhighprecision3Dseismicexploration.TheapplicationofthetechniquesintheareassuchasMachangandQiaokoushowsthattheyareeffectiveinsolvingtheexplorationanddevelopmentproblemsincomplexfault-blockareas,andarevaluabletobemorewidelyappliedinthesameproblematicarea.Keywords:highprecision3Dseismics;richhydrocarbonarea;fineexploration;Dongpusag;fault-blockreservoir3DHigh-precisionSeismicImagingTechnologyforComplexandSmallFaultBlocksinPucheng-WeichengArea/LiShaokang,MaJianbo,YinYanhui,LingCaixiang,ZhaoTiefeng//GeophysicalExplorationResearchInstituteofSINOPECZhongyuanOilfieldCompany,PuyangCity,HenanProvince457001Abstract:ThestructuresinPucheng-WeichengareaofDongpusagarecomplicatedandtheexplorationmainlyfocusesonthecrushingcomplexfaultblocksandlithologichydrocarbonreservoirs,suchasthefaultofthenarrowspacebetweentwoadjacentthings,andthesmallfaultblocks.Theworkingareafeaturesinlarge-volumeseismicdata,complexwavefield,andinterferencewavedevelops.Inviewofthecharacteristicsofhigh-precisionseismicdataofPucheng-Weichengareaandgeologicalcharacteristicsoftheworkingarea,researchhasbeenconductedonthefineprocessingmethodandhighprecisionseismicimagingtechnology.High-precisionseismicdataprocessingtechnologiestakinghigh-precisionpoint-to-pointvelocityanalysis,tomographicinversionstaticcorrection,prestacktimemigration,andprestackinterferencewavesuppressionasmainfeaturesaredeveloped.Andobviousprogresshasbeenmadeindataprocessing.Keywords:high-precision3Dseismics;variablesufaceelement;point-to-pointvelocityanalysis;3Dprestacktimemigration;Pucheng-WeichengResearchof3DGeometrySamplingUniformityAnalyticalMethod/WanXuejian,GeXueqin,ZhangSongping,GuoLijie,WangGuangzhi,YangBo,ZhangLing//GeophysicalProspectingCompanyofSINOPECZhongyuanOilfieldCompany,PuyangCity,HenanProvince457001Abstract:Theuniformityof3Dgeometryisessentialtoseismicacquisitioninthespatialcontinuity,balance,aswellasfollow-updataprocessing(pre-stackmigration)andcomprehensiveexplanation.Inthispaper,theanalyticalevaluationmethodof3Dgeometryispresentedtobeapplied,throughanalyzingandevaluatingtheuniformityof3Dgeometryonfold,offset,azimuthandoffset-foldqualitativelyorquantitatively,soastocomparativelyanalyzethesamplinguniformitydifferenceof3Dgeometriesonthewhole,thenfeedbacktheanalysisresultstodesignprocessof3Dgeometry,makethechoiceof3-Dgeometrymorescientificandreasonable.Keywords:3Dgeometry;fold;offset;azimuth;offset-fold;uniformity;non-uniformcoefficientDesignofHigh-precisionSeismicAcquisitionGeometryInMachangArea/QinGuangsheng1,2;CaiQixin2;ZhangShuhai2;WangGonghuai2;ZhuWenlou3//1.ChinaUniversityofGeosciences,Beijing100039;2.GeophysicalResearchInstituteofSINOPECZhongyuanOilfieldCompany,PuyangCity,HenanProvince457001;3.GeophysicalProspectingCompanyofSINOPECZhongyuanOilfieldCompany,PuyangCity,HenanProvince457001Abstract:In2005,ZhongyuanOilfieldCompanycarriedouthigh-precision3DseismicexplorationinMachangareaofDongpusag,inwhichthedesignanddemonstrationofgeometryschemeisakeystep.Themaingeometriesutilizedinthesaginthepastarefirstanalyzedbyusingforwardmodelingtechniques.Bycomparisonofsimulateddata,theknowledgethatimagingeffectscanbeimprovedwithincreasingspatialsamplingdensityiscognized.Theacquisitiongeometryisdeterminedbyanalyzingthetwogeometrieswithhigherspatialsamplingduringthesurveydesignofhigh-precisionseismicexplorationinthearea.Focalanalysisshowsthatthedesignedgeometryhasgoodpropertyinamplitudeaccuracyandinhorizontalillumination,whichisfavorableforlithologyrecognitioninfinalseismicdata.Withthepracticeofhigh-precisionseismicexplorationinthearea,imagingqualityissignificantlyimprovedandverygoodresultsareachieved,whichalsoprovesthecorrectnessofthegeometrydesign.Keywords:seismicgeometry;ray-trace;forwardmodeling;pre-stackimaging;spatialsampling;Machangarea3DSeismicDataMergedProcessingTechnologyandtheEffectinBaiyinchaganSag/WanXiaobing1,CaiQixin1,PengHanming1,ZhangFangdong2,ZhangZhongling1,YaoChun1/1.GeophysicalResearchInstituteofSINOPECZhongyuanOilfieldCompany,PuyangCity,HenanProvince457001;2.ExplorationandDevelopmentResearchInstituteofSINOPECZhongyuanOilfieldCompany,PuyangCity,HenanProvince457001Abstract:Aimingatdifferenttargetsduringdevelopingperiod,ZhongyuanOilfieldhasacquired3Dseismicdataofsmall-scalefor10dispersebatchesinBaiyinchagandepressionsince1993,itwasunfavorableforlocalresearchanddepressionexploration,stamppatterneddatawasnotcontentwithdepressionexplorationdevelopment.Inordertomeettherequiremento