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ID:33527202
大小:5.07 MB
页数:95页
时间:2019-02-26
《地面微地震资料处理方法的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、SurfacemicroseismicdataprocessingmethodresearchGuoXiaozhong(GeophysicalProspectingandInformationTechnology)DirectedbyProf.SongWeiqiAbstractMicroseismicmonitoring(seismicmonitoringofnosource)isamethodofmonitoringreservoirfluidmovementandtheeffectofhydraulicfracturing.Thedetectorsare
2、arrangedaroundthewaterinjeetionwellsandcontinuouslyrecordthesignalsoftheundergroundrockcrackingduetowaterinjcctionfracturing,oilandgasexplorationandotherfactors.Themainwaysofmicroseismicmonitoringhavetwowaysofdownholeandsurfacemonitoringtoday.ThesurfacemicroseismicmonitoringWasdeve
3、lopinglate.Becauseitismoreeconomicalandmorebroadofmonitoringrangethanthedownholemonitoring,thistechniquehasattractedawideinternalandforeignscholarsandexperts.Becausetheeffectivesignalenergyisweakforsurfacemicro-seismicdata,thereistheproblemoflowsignaltonoiseratio.Thenresearchingthe
4、methodofprocessingsurfacemicroseismicdata,hasgreatsignificancefortheapplicationandpopularizationofthesurfacemieroseismicmonitoring.Thispaperfirstlyanalysissurfacemicroseismicdata.Thenanalysisofthefrequencyandenergycharacteristicsoftheeffectivesignalofsurfacemicroseismicdata.Summary
5、classifyandanalysisthetypesofnoiseofsurfacemicroseismicdata.Laidasolidfoundationfort11enextstepoftheprocessingofimprovingsignaltonoiseratio.Studyandformulatetheroughlyflowofsurfacemicro-seismicprocessing.Introducedthesurfacemicroseismicacquisition,andpeoplehadaroughideaofsurfacemie
6、roseismicmonitoring.microseismicisgroundmonitoring,SOtraveltimeWasaffectedbytheundulatingsurface.Forsolvingthisproblem,usingtheobtainedinformation,formulatedstaticcorrectionmethodforsurfacemicroseismicmonitoring.Andstudiedcarefullythedetailsoffirstbreakpickingandtheestablishmentand
7、correctionofspeedmodel.Successfullyresolvedtheundulatingsurfacestaticsproblemandsucceededincreatingtheconditionsforthesubsequentde—noisingprocessing,andeffectivelyimprovesthesignaltonoiseratioofthemicroseismicdata.Fortheproblemofnoisepressingofthesurfacemicroseismicdata,basisonthep
8、reliminarydataanalysis,pro
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