高效高精度初至波层析静校正方法及应用李录明1贺玉山2罗贤1.DOC

高效高精度初至波层析静校正方法及应用 李录明1, 贺玉山2, 罗省贤1 (1.油气藏地质及开发工程国家重点实验室(成都理工大学)，成都 610059; 2.大庆钻探工程公司 物探一公司, 黑龙江 大庆 163357） ［摘要］ 研究解决三维复杂地表层析静校正耗时等问题的方法，采用快速初至时间拾取、快速表层模型折射反演、快速计算低频校正量及高频校正量、快速地表一致性和地表非一致性时差校正方法，实现了高效、高精度的快速初至波层析静校正，并经实际二维、三维资料处理证实了该方法及软件具有较高的效率，优于常规地震资料处理中所用的微测井加初至波静校正商业软件的处理效果。 ［关键词］ 快速初至静校正；快速初至拾取；快速模型反演；地表非一致性时差校正 Method of first arrival tomographic static correction with high efficiency and precision and its application LI Lu-ming1, HE Yu-shan2, LUO Sheng-xian1 1.State key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; 2.The First Geophysical Prospecting Company of Daqing Drilling Engineering Company, Daqing 163357, China Abstract: The paper studies the method to solve the problem of a great lot of time consuming in processing tomographic static correction with the 3-D complicated surface. The first arrival tomographic static correction with high efficiency and precision can be realized by using the methods of fast picking up the first break, fast refraction inversion of the surface velocity model, fast computing the low and high frequency corrections, fast surface consistency and surface non-consistency static corrections. The real 2-D and 3-D seismic data processing proved that the above-mentioned methods and the software have good results. They have an advantage of efficiency and precision compared with the log data and the commerce software of first break static correction used in the normal seismic data processing. Key words: fast first arrival static correction; fast picking up of the first break; fast model inversion; surface non-consistency correction 盲小波算法在金属矿床地震资料去噪处理中的应用 周仲礼, 秦飞龙, 夏欢欢, 苏建美 (成都理工大学 数学地质四川省重点实验室，成都 610059) ［摘要］ 根据小波分析和盲信号分离原理，提出了一种金属地震资料降噪的盲小波算法。首先将金属地震信号用小波分解为不同频带的信号；其次把不同频带的信号进行软阈值法处理，并进一步对不同频带信号进行盲分离，提取出与源信号相关的信号；最后通过小波重构估计源信号。通过盲小波算法与其他降噪技术对实际金属地震资料进行降噪处理，结果表明盲小波算法能有效消除各种干扰噪声。去噪后的金属地震资料纹理清晰，地震资料剖面信噪比显著提高。 ［关键词］ 金属矿地震资料;去噪;小波分析;盲信号分离 Application of blind wavel