新疆石油地质 ›› 2004, Vol. 25 ›› Issue (5): 498-499.

• 油气勘探 • 上一篇    下一篇

三维叠前深度偏移技术在复杂地区的应用

王红旗1,2, 鲁烈琴2, 刘文卿2, 张建伟2, 孟小红1   

  1. 1.中国地质大学,北京 100083;
    2.中国石油石油勘探开发科学研究院西北分院,甘肃 兰州 730020
  • 收稿日期:2003-02-27 发布日期:2021-01-13
  • 作者简介:王红旗(1968-),男,河南温县人,高级工程师,在读博士研究生,地球物理勘探。联系电话:0931-8686074

Application of 3D Prestack Depth Migration in Complex Area

WANG Hong-qi1,2, LU Lie-qing2, LIU Wen-qing2, ZHANG Jian-wei2, MENG Xiao-hong1   

  1. 1. China University of Geosciences, Beijing 100083, China;
    2. Northwest Sub-Institute, Research Institute of Petroleum Exploration and Development, PetroChina, Lanzhou, Gansu 730020, China
  • Received:2003-02-27 Published:2021-01-13

摘要: 应用三维叠 前深度偏移成像技术,对复杂地区的地震资料进行了三维叠前深度偏移处理,取得了良好的效果。其主要实现过程是:在时间剖面上拾取速度层位,建立时间模型;用相干反演法和叠加速度反演法相结合逐层求取层速度,建立层速度一深度地质模型;用剩余速度分析修改和优化地质模型;选用Kirchhoff积分法或差分法实现三维叠前深度偏移。

关键词: 复杂构造, 三维偏移, 叠前偏移, 深度偏移, 层速度, 地质模型, Kirchhoff积分法, 有限差分法

Abstract: 3D prestack depth migration technique has been applied for processing of 3D prestack depth migration to some complex areas, and the results are satisfactory. The main steps can be described as follows: 1) develop time model by picking up velocity horizons in time section;2) develop interval-depth model by interval velocities layer by layer obtained by coherent inversion and stacking velocity inversion methods;3) optimize the geologic model by residual velocity analysis, and 4) achieve 3D prestack depth migration by using Kirchhoff integral method or finite differential method.

Key words: comnlex structure, 3D mieration:-prestack migration, depth migration, interval velocitv, geologic model, Kirchhoff inteeral method, finite differential method

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