地球物理

几种叠后时间偏移方法在西部低信噪比地区应用效果比较

  • 林承焰 ,
  • 谭丽娟 ,
  • 于翠玲
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  • 中国石油勘探开发研究院西北分院
苏勤,1976年生,男,硕士,物探工程师,1999年毕业于江汉石油学院应用地球物理专业,目前主要从事地震资料数据处理的研究工作。地址:(730020)甘肃省兰州市城关区雁儿湾路535号。电话:(0931)8686075。E-mail:suq@petrochina.com.cn

网络出版日期: 2007-03-15

Comparison of several post stack time migration methods in western area with low S/N ratio

  • LIN Chengyan ,
  • TAN Lijuan ,
  • YU Cuiling
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  • Northwest Branch, Research Institute of Petroleum Exploration and Development, PetroChina

Online published: 2007-03-15

摘要

当前叠前时间偏移技术已得到大力推广, 然而叠后时间偏移技术由于其计算效率高, 加之在某些地区因信噪比等原因其应用效果甚至优于叠前偏移技术, 因此我们不应该完全抛弃叠后时间偏移方法, 而应针对每个区块的信噪比等实际资料的特点选定合适的偏移方法。文章针对西部某低信噪比区块选取了比较常用的3 种叠后时间偏移方法进行试验, 验证了各偏移方法的优缺点及适用条件, 为如何选取合适的偏移方法提供了可靠的依据。

本文引用格式

林承焰 , 谭丽娟 , 于翠玲 . 几种叠后时间偏移方法在西部低信噪比地区应用效果比较[J]. 岩性油气藏, 2007 , 19(1) : 117 -119 . DOI: 10.3969/j.issn.1673-8926.2007.01.023

Abstract

Currently prestack time migration technology has been extended greatly,while the application result of post stack time migration is even more effective than that of prestack migration because of the high calculation efficiency and low S/N ratio in some place. So the authors consider that post stack time migration should not be abandoned completely but the proper migration methods should be chosen according to the characters of seismic data. Aiming at some western area with low S/N ratio ,three usual methods of poststack time migration are chosen for experiments.The experiments validate the relative merits and applicability conditions of these migration methods and provide reliable reference to how to choose proper migration methods.

参考文献

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