第35卷1期2023年1月中国煤炭地质COALGEOLOGYOFCHINAVol.35No.1Jan.2023doi:10.3969/j.issn.1674-1803.2023.01.11文章编号:1674-1803(2023)01-0064-04串联反褶积在提高下组煤层成像效果上的应用解洁清(中国煤炭地质总局地球物理勘探研究院,河北涿州,072750)摘要:由于煤系地层具有多煤层叠置的赋存特点,在煤炭地震勘探资料处理过程中,往往遇到由于上组煤层对下组煤层的屏蔽作用进而影响下组煤层反射波成像效果的问题。因此,如何在煤炭地震资料处理中提高下组煤层的成像效果成为当前普遍关心的问题。随着煤层的深度加大,原始资料中的低频成分对反射波成像质量的贡献也越大,资料处理过程中低频成分利用越多,下组煤层成像效果就越好,因此在处理过程中应尽量保留地震资料的低频成分。本次研究在应用地表一致性反褶积的基础上,串联使用预测反褶积方法并结合剩余静校正的运用,充分拓展资料低频段频带宽度,从而达到提高下组煤层成像效果的目的。关键词:多煤层;屏蔽作用;低频;串联反褶积中图分类号:P631.443文献标识码:AApplicationofCascadedDeconvolutiontoImproveImagingEffectofLowerCoalSeamXIEJieqing(ResearchInstituteofCoalGeophysicalExploration,CNACG,Zhuozhou,Hebei072500)Abstract:Duetothecharacteristicsofcoalstratawithmultiplecoalseamsoverlapping,itisoftenencounteredthattheshieldingeffectoftheuppercoalseamsaffectstheimagingeffectofthereflectedwavesforthelowercoalseams,intheprocedureofcoalseismicdataprocessing.Therefore,ithasbecomethecurrentcommonconcernhowtoimprovetheimagingeffectoflowercoalseamforcoalseismicdataprocessing.Alongwithcoalseamdepthincreasing,thecontributionoflow-frequencycomponentsintheoriginaldatatothereflec-tionwaveimagingqualityisalsogreater,andthemorelow-frequencycomponentsareutilizedinthedataprocessingprocess,thebettertheimagingeffectoflower-groupcoalseamwillbe.Thenthelow-frequencycomponentsofseismicdatashouldberetainedasmuchaspossibleindataprocessingprocedure.Inthisstudy,basedontheapplicationofsurfaceconsistentinversefoldproduct,thepredicteddeconvolutionmethodiscascadedusedwiththeresidualstaticcorrectiontoexpandthefrequencybandofthelowfrequencybandofthedata,soastoachievethepurposeofimprovingtheimagingeffectforthelowercoalseam.Key...
