基于Vista的地震资料叠后偏移处理方法研究  

Study on Post-stacked Migration Method of Seismic Data with Vista System

作　　者：李锦锋[1,2] 崔寓 郭志强 张波 马永钊 

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]延长石油下寺湾采油厂勘探开发研究所,陕西延安716000 [3]西安森舍电子科技有限责任公司,陕西西安710100 [4]甘肃省地矿局第二地质矿产勘查院,甘肃兰州730020 [5]中国石油集团测井有限公司,陕西西安710200

出　　处：《延安大学学报（自然科学版）》2015年第3期62-65,共4页Journal of Yan'an University：Natural Science Edition

摘　　要：叠后偏移处理能使倾斜反射层归位到它们真正的地下界面位置,并使绕射波收敛,横向分辨率提高。在分析了有限差分法和克希霍夫积分法偏移原理的基础上,借助Vista软件对地质模型资料进行叠后偏移处理与分析,通过改变叠后偏移处理过程中的参数后可以得到不同的偏移剖面,然后结合地质模型对这些不同的偏移剖面进行对比、分析和研究,取得了很好的效果。结果表明叠后偏移在一定范围内仍有其优势。The process of post-stack migration can make the sloping reflectors homing to the true sub-surface po-sition,the diffracted wave converge,and the lateral resolution improve. With the results of previous studies,in this paper,the principle of finite difference method and Kirchhoff integration method is introduced firstly,and with the help of Vista system,the geological model data is analyzed by the post-stack migration. Different migration profile is a good result received by the different values of post-stack migration parameters. Afterwards,combined with the geological model,the relatively good comparison,analysis and research is successfully carried out for the different migration profile. The results show that the post-stack migration still has its advantages within a certain range.

关 键 词：叠后偏移成像 有限差分法 克希霍夫积分法 Vista地震数据处理系统 

分 类 号：TE122.1[石油与天然气工程—油气勘探]