摘要
三维地震资料连片处理是复杂而精细的工作,目的是消除各个区块由于施工参数和条件不同引起的频率、振幅、相位等方面的差异。目前,连片配套技术比较成熟,主要采用匹配滤波方法消除频率及相位差异,采用五维规则化及基于覆盖次数的能量调整方法解决能量不一致的问题。若不同区块间数据信噪比差异较大,经现有常规连片配套技术处理后,仍会存在属性提取不一致的问题。为此,文中利用炮检距差值时差校正及时变分集加权道组合技术,很好地解决了覆盖次数差异巨大引起的信噪比不一致问题,在实际数据连片处理中取得了较好效果。
Merging processing of three-dimensional(3D)seismic data refers to complex and fine digital processing,which aims at eliminating the differences in frequency,amplitude,and phase caused by different acquisition factors and conditions in each block.At present,the available methods of merging processing are relatively mature,mainly using the method of matched filtering to deal with the differences in frequency and phase and using fivedimensional regularization and energy adjustment based on coverage times to solve the problem of energy inconsistency.However,when the signal-tonoise ratio(SNR)varies greatly in different blocks,there is still inconsistency in the attribute extraction upon the application of the existing supporting methods of merging processing.Therefore,this paper discusses the use of offset-difference time difference of arrival(TDOA)correction and time-varying diverse weighted trace combination technology,which solves the problem of SNR inconsistency caused by the huge difference in coverage times and has achieved great results in the merging processing of actual seismic data.
作者
王伟
刘振宽
张品
陈颖
王宏旭
王永明
WANG Wei;LIU Zhenkuan;ZHANG Pin;CHEN Ying;WANG Hongxu;WANG Yongming(Huabei Branch of Geophysical Research Institute,BGP Inc.,CNPC,Renqiu,Hebei 062552,China;Exploration Division of PetroChina Daqing Oilfield Co.,Ltd.,Daqing,Heilongjiang 163453,China;GRI,BGP Inc.,CNPC,Zhuozhou,Hebei 072751,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2022年第S01期65-69,9,共6页
Oil Geophysical Prospecting
基金
大庆油田公司科研项目“合川潼南地区二三维地震老资料重新处理”(DQYT-2020-JS-51674)资助
关键词
连片处理
炮检距差值时差校正
时变分集加权道组合
信噪比一致性
merging processing
offset-difference TDOA correction
time-variant diverse weighted trace combination
SNR consistency
作者简介
王伟,高级工程师,1987年生。2009年毕业于西南石油大学,获勘查技术与工程专业学士学位,2019年毕业于中国石油大学(北京),获地质工程专业硕士学位。现就职于中国石油集团东方地球物理公司研究院华北分院,主要从事地震资料处理。河北省任丘市北站路华油物探院内华北分院,062552。Email:wangwei59@cnpc.com.cn
