高邮凹陷阜三段隐蔽油藏保幅处理方法及应用  

Amplitude-preserving processing method and its application in subtle reservoir of Fu3 member in Gaoyou Sag

作　　者：郭廷超[1] 许冲[1] 施兴刚[1] 李红彩[1] GUO Tingchao;XU Chong;SHI Xinggang;LI Hongcai(Geophysics Research Institute of Jiangsu Oilfield Company,SINOPEC,Nanjing 210046,China)

机构地区：[1]中国石化江苏油田分公司物探研究院,江苏南京210046

出　　处：《复杂油气藏》2021年第4期22-30,共9页Complex Hydrocarbon Reservoirs

基　　金：江苏油田科技项目“高邮凹陷阜三段岩性油气藏保幅处理方法及应用研究”(JS20006);“基于压缩感知和多信息融合的宽频处理技术研究及应用”(JS20004)。

摘　　要：高邮凹陷阜三段岩性油藏勘探潜力较大,但因阜三段主要为三角洲前缘亚相沉积环境,砂泥薄互层发育,阜三段地震反射特征的连续性差,反射能量弱,分辨率不够,常规的地震资料处理方法无法满足阜三段保幅成像的要求。针对这一问题,研究和应用曲波域保幅去噪、时变谱模拟反褶积两项关键技术,结合其他针对性处理技术,建立“三维一体”保幅处理框架和保幅评价方法,达到提高阜三段储层反射特征和分辨率的目的,取得了良好的勘探效果,具有在类似区块推广应用的前景。The lithologic subtle reservoirs in Fu3 member of Gaoyou Sag have great potential for exploration.However,the Fu3 member is mainly composed of delta and delta front subfacies,with thin sand mud interbeds.As a result,there are poor continuity,weak reflection energy,and insufficient resolution in the seismic reflection characteristics of the Fu3 member.The conventional seismic data processing method can not meet the requirements of amplitude-preserving imaging in the Fu3 member.Therefore,it was studied and applied two key technologies:amplitude-preserving denoising in curved wave domain and time-varying spectrum simulation deconvolution,combined with other targeted processing technologies.And then it was established a“three-dimensional integration”amplitude-preserving processing framework and amplitude-preserving evaluation method,which can improve the reflection characteristics and resolution of Fu3 member reservoirs.Therefore,good exploration results are obtained,and it has the prospect of popularization and application in similar blocks.

关 键 词：保幅处理 曲波域保幅 时变谱模拟反褶 阜三段储层 高邮凹陷 

分 类 号：P631[天文地球—地质矿产勘探]