地面微地震资料处理方法的研究

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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