埕岛桩海地区连片地震资料的数据规则化处理

Seismic data regularization by merging processing in Chengdao-Zhuanghai area

(中国石油化工股份有限公司胜利油田分公司物探研究院，山东东营 257022)

Geophysical Research Institute, Shengli Oilfield, SINOPEC, Dongying 257022, China

将数块小三维资料连片处理可以获得大区域的构造成像，较好地解决小区块三维资料单独成像引起的边界效应。由于这些小区块三维资料采集的年度、仪器、方法、面元、地表条件等不同，各区块资料在信噪比、能量、相位、波形、频率等方面存在很大的差异。在进行连片处理时需对资料做规则化处理，以消除这些差异。埕岛桩海地区地表跨越浅海、海陆过渡区和陆地，地震资料由26块小三维组成。通过资料特点的分析和研究，采用波形一致性子波匹配方法、矢量波组时差校正方法、时空变能量统计匹配方法、递进迭合式面元均化方法进行数据规则化处理，较好地解决了资料之间的不一致性问题，取得了预期的成像效果。

Merging processing joints several 3-D seismic data blocks together for imaging, which can well remove the boundary artifact in migrated sections caused by little pieces of seismic data, and make the structure interpretation more accurate. The little pieces of seismic data have a great difference in S/N, energy, phase, wave form and frequency because of the difference in acquisition time, equipment, construction method, acquisition grids and surface condition. So, regularization processing should be carried out for seismic data during merging processing to eliminate the differences. The surface conditions in Chengdao-Zhuanghai area include shallow sea, land-sea transitional area, and land. Seismic data is composed of 26 little 3-D seismic data. Through the analysis and study of the characteristics of seismic data, some methods were utilized, such as wave shape conformity wavelet matching method, vector wave group moveout correction method, timespace variable energy statistical matching method and progressive-superimposed bin equalization method, which can well solve the difference of several aspects like wave shape, to settle proper data basis for imaging. Finally, the imaging achieved good result.