三维地震资料叠前连片处理技术
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摘要
三维叠前连片拼接处理技术,不是一项单一处理技术,而是一项系统工程,应以"全面考虑、细致分析、总体把握、分阶段实施"为指导思想。本文通过综合应用全区网格统一定义、全区统一静校正量计算、全区统一速度场建立、系列地表一致性处理、匹配滤波和面元均化等一套系统的三维叠前连片拼接处理技术,消除不同区块间地震数据的差异,避免各区块边界数据的失真,达到三维地震数据的叠前无缝拼接连片。连片后的数据体在振幅能量、相位特征、频带宽度等方面自然、合理,在区块间拼接处,反射层的有效反射信息一致性程度有较大提高。
The block-jointed together processing technique of 3-D prestick seismic data is not single processing technique,but a systematic engineering,which should follow the guided idea of "consideration in full scale,fine analysis,overall handling and implementation in separate steps".Through a set of systematic block-jointed together processing technique of 3-D prestick seismic data such as integrative usage of unified definition of grid in whole area,unified computation of statics in whole area,unified buildup of velocity field in whole area and a series of surface-consistent processing,matching filtering and bin-size uniformization,the paper eliminates the difference in seismic data among different blocks,avoids distortion of data on boundary of different blocks and reaches the goal of seem-free link of 3-D prestack seismic data.The amplitude energy,phase character and band width in data volume after block-jointed together processing are natural and reasonable,and the consistent level of useful reflection information from reflection horizons in block-jointed positions has been greatly improved.
The block-jointed together processing technique of 3-D prestick seismic data is not single processing technique,but a systematic engineering,which should follow the guided idea of "consideration in full scale,fine analysis,overall handling and implementation in separate steps".Through a set of systematic block-jointed together processing technique of 3-D prestick seismic data such as integrative usage of unified definition of grid in whole area,unified computation of statics in whole area,unified buildup of velocity field in whole area and a series of surface-consistent processing,matching filtering and bin-size uniformization,the paper eliminates the difference in seismic data among different blocks,avoids distortion of data on boundary of different blocks and reaches the goal of seem-free link of 3-D prestack seismic data.The amplitude energy,phase character and band width in data volume after block-jointed together processing are natural and reasonable,and the consistent level of useful reflection information from reflection horizons in block-jointed positions has been greatly improved.
引文
[1]刘成斋.胜利油田三维地震数据连片处理.石油地球物理勘探,2004,39(5):579~585
[2]张仲祜,蒋琳,张林红.地震资料三维联片拼接处理技术.新疆石油天然气,2005,1(3):38~43
[3]段云卿.匹配滤波与子波整形.石油地球物理勘探,2006,41(2):156~159
[4]云美厚,丁伟,王开燕,唐付良,张晓梅.地震资料一致性处理方法研究与初步应用.石油物探,2006,45(1):65~69
[5]左海,宋小平,魏庚雨.折射和层析静校正量计算方法的综合运用.石油地球物理勘探,2007,42(增刊):35~39
[6]殷八斤,曾灏,杨在岩.AVO技术的理论与实践.北京:石油工业出版社,1995
[7]J F克利尔波特.地球物理数据处理基础.北京:石油化学工业出版社,1979
[2]张仲祜,蒋琳,张林红.地震资料三维联片拼接处理技术.新疆石油天然气,2005,1(3):38~43
[3]段云卿.匹配滤波与子波整形.石油地球物理勘探,2006,41(2):156~159
[4]云美厚,丁伟,王开燕,唐付良,张晓梅.地震资料一致性处理方法研究与初步应用.石油物探,2006,45(1):65~69
[5]左海,宋小平,魏庚雨.折射和层析静校正量计算方法的综合运用.石油地球物理勘探,2007,42(增刊):35~39
[6]殷八斤,曾灏,杨在岩.AVO技术的理论与实践.北京:石油工业出版社,1995
[7]J F克利尔波特.地球物理数据处理基础.北京:石油化学工业出版社,1979
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