和田桑株地區(qū)山前逆沖推覆構(gòu)造帶野外采集技術(shù)研究.pdf

1、中國(guó)海洋大學(xué)碩士學(xué)位論文和田桑株地區(qū)山前逆沖推覆構(gòu)造帶野外采集技術(shù)研究姓名：宋俊海申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：地球探測(cè)與信息技術(shù)指導(dǎo)教師：劉懷山鄭澤繼20040601StudyonSeismicExplorationFieldAcquisitionMethodinComplicatedPiedmontZoneofHetianinSangzhuAbstractAslayingmoreandmoreemphasisonthepositionof

2、hydrocarbon—assemblationinforemountainbelt，theoiltechnologyacceleratedtheseismicexplorationHowevertheseismicexplorationoffore—mountainbeltarefacingseveraldifficultiesFirstlyinforemountainbelttheterrainvaryintenselythedon

3、gadevelophereandthere，themountainsareverysteepandtheelevationhaveabigvariationSecondlythestructureofthesurfaceisverycomplexandthelithologyvariesacutelyinsuchconditionthegenerationandreceivingofseismicwaveisverydifficultT

4、hirdlynotthetraffichereisinconvenient，buttheclimateisbadandthesourceofwaterislackingFourthlyallofthequalityoftheseismicdatahereisverybad，behavingastheintensenoisedisturbance10wN／SandresolutionetcFifthlytheshallowhorizoni

5、ntheregionoffore—mountainbeltdevelopslotsofthruststructure，intheregionofthethrustbodyoldhorizonwasthrustedonthenewhorizon，whichmadetheseismicwavefieldbecomplexandimagingofthereflectivewavebedifficultSixthlythewavefieldof

6、highsteepstructureiscomplexandtheimagingofthereflectivewaveisdifficultTheregionofSangzhuinHetian，whichisinTabetbasinisthistypeofregionThroughresearch，weusethemethodofarrayreceiving，arrayshootingandstackresponsetoattenuat

7、enoiseAccordingtothefrequencycomponentweneedtoprotect，wecanchooseappropriatearraydistancetoattenuatethenoisefromdirectionofinline，Atthesametime，wecanmakeitpossibletoattenuatenoiseofallfrequencycomponentfromthedirectionof

8、cmsslineAstodifferentgeologystructure，Throughthethoughtofusingvariabletraceinterval，shotintervalandfold，wecallapplylargeoffsetandhighmultiplicityaccordingtolowfrequencygeometrytoacquirehi臥qualityseismicdataKeywords：seism