摘要
西部地区地震勘探工作多是在山地、山前带、沙漠、沟壑纵深区等低降速带变化大的复杂地区进行,静校正问题成为制约勘探成效的瓶颈问题。如果在数据采集时,考虑到地学断面空间结构横向上存在的相关性,引入地质统计学的克里格(Kriging)方法估计整个区域内的静校正值,根据静校正值估计分布图合理布置炮点与接收点的位置,从而可以获得静校正量变化更加平稳的数据,提高地震初至波的分辨率,最终得到高质量的地震剖面。根据这一思路,编制了初至层析克立格静校正软件。
Since seismic exploration in the northwestward area is mainly carried out in mountainous region, foothill belt, gobi and desert, where the variation of low velocity layer is rapid, so static correction has become a bottleneck restricting the effect of exploration. Considering the horizontal coherency of spatial structures in physiographic fractured surfaces, the Kriging method of geostatistics was introduced to correct the whole region static correction. According the distributing of the static correc- tion value, we can reasonable arrangement the position of the shot and receiver, which will improved the resolution of the first arrival wave, alleviated the rise and fall or vary irregularly of the static correction value.
出处
《计算机与数字工程》
2009年第6期129-131,140,共4页
Computer & Digital Engineering
关键词
克立格
静校正
Kriging, statics correction
