复杂地表条件下二维地震资料拼接处理技术  

Splicing Processing Technology of 2D Seismic Data Under Complex Surface Condition

作　　者：张亚斌[1] 

机构地区：[1]中国石化河南石油分公司勘探开发研究院,河南南阳473132

出　　处：《吐哈油气》2009年第2期101-103,共3页Tuha Oil & Gas

摘　　要：焉耆盆地地表条件复杂,有山地、沙山、戈璧、沼泽、湖区和农田等,地震资料年度跨度大,地震激发类型不一致(地表变化、岩性、井炮、震源等),地表高程变化大,静校正问题严重,原始资料的信噪比和分辩率都很低。针对这种复杂地表、不同年度、不同激发条件的资料进行的拼接处理,采取建立近地表模型、应用交互折射静校正技术、地表一致性处理技术、子波整形技术及叠前去噪技术等技术的综合分析应用,较好地解决了本地区资料的静校正问题及子波不一致的问题,使处理剖面的信噪比和分辩率都有较大的改善。The surface conditions are complex in Yanqi basin,there are mountains, sand hill, gobi, swamps, lake and farmland, etc.. Its seismic data have large year span, and seismic excitations are inconsistent causing by surface changes, lithology, well shot, and the seismic source, etc.. Its surface elevation changes largely,and the seismic data＇ s static correction problems are serious,and the SNR （signal to noise ratio） and resolution of the raw data are very low. In view of this complex surface, different years span and different excitation condition data, the splicing processing solves the seismic data＇ s static correction problem and wavelet inconsistencies problem effectively by using such technique or technology as the near - surface model establishing technique, interactive refraction static correction technique, surface consistency of treatment technology, wavelet shaping technique and pre - stack de -noising technology to analysis comprehensively, so that the SNR and resolution of the processed sections are greatly improved.

关 键 词：静校正 地表一致性 子波归一化 拼接处理 

分 类 号：P631.443[天文地球—地质矿产勘探] P618.13[天文地球—地质学]