物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
3期
566-570
,共5页
深水地震数据%正演模拟%多次波%SRME%扩展半径
深水地震數據%正縯模擬%多次波%SRME%擴展半徑
심수지진수거%정연모의%다차파%SRME%확전반경
deep water seismic data%forward modeling%multiple%SRME%extended radius
针对深水采集的地震数据包含严重的多次波,多次波与有效波互相叠合使得地震剖面的同相轴难以区分和追踪解释的情况,采用实际资料的层位,建立三维地质模型并用实际的导航数据正演模拟野外放炮施工,由于正演模拟的数据层位较少,可针对性地分析三维SRME技术预测多次波模型的影响因素,如空间采样、扩展半径等,然后应用于实际地震数据的SRME处理,比较二维SRME与三维SRME的应用效果,验证了三维SRME比二维SRME能更有效地衰减多次波。
針對深水採集的地震數據包含嚴重的多次波,多次波與有效波互相疊閤使得地震剖麵的同相軸難以區分和追蹤解釋的情況,採用實際資料的層位,建立三維地質模型併用實際的導航數據正縯模擬野外放砲施工,由于正縯模擬的數據層位較少,可針對性地分析三維SRME技術預測多次波模型的影響因素,如空間採樣、擴展半徑等,然後應用于實際地震數據的SRME處理,比較二維SRME與三維SRME的應用效果,驗證瞭三維SRME比二維SRME能更有效地衰減多次波。
침대심수채집적지진수거포함엄중적다차파,다차파여유효파호상첩합사득지진부면적동상축난이구분화추종해석적정황,채용실제자료적층위,건립삼유지질모형병용실제적도항수거정연모의야외방포시공,유우정연모의적수거층위교소,가침대성지분석삼유SRME기술예측다차파모형적영향인소,여공간채양、확전반경등,연후응용우실제지진수거적SRME처리,비교이유SRME여삼유SRME적응용효과,험증료삼유SRME비이유SRME능경유효지쇠감다차파。
Heavy multiple waves in marine seismic exploration interfered by primary waves can't be fully attenuated, and these multiple waves make the seismic profile too illegible and also makes it difficult to easily interpret and trace the horizon. In view of such a situa-tion, multiple wave forward modeling by simulating field operation on the given velocity horizon model was created. As there were only a few horizons in the mocked layer model, some factors such as sample in pace and extended radius that affected precise prediction of multiple wave model were analyzed and discussed. After that, reasonable processing parameters were optimized and applied to the real seismic data. The final results demonstrate that 3D SRME ( Surface Related Multiple Elimination) , which is better than 2D SRME, is capable of effectively suppressing multiple waves.