天然气地球科学 ›› 2010, Vol. 21 ›› Issue (2): 316–320.doi: 10.11764/j.issn.1672-1926.2010.02.316

• 天然气地球物理勘探 • 上一篇    下一篇

多信息约束层析反演静校正技术及其应用

王孝, 贺振华, 王述江, 冯会元, 王西林   

  1. 1.成都理工大学油气藏地质及开发工程国家重点实验室,四川 成都 610059;
    2.中国石油勘探开发研究院西北分院,甘肃 兰州 730020
  • 收稿日期:2009-12-29 修回日期:2010-03-30 出版日期:2010-04-10 发布日期:2010-04-10
  • 通讯作者: 王孝wang_x8@petrochina.com.cn E-mail:wang_x8@petrochina.com.cn
  • 作者简介:王孝(1975-),男,甘肃陇西人,工程师,在读博士,主要从事连片地震资料成像处理研究工作.
  • 基金资助:

    中国石油重大科技专项“柴达木盆地油气勘探开发关键技术”项目(编号:07-01Z-01-01)资助.

Technology of Static Correction for Multi-information Constrained Tomographic Inversion and Its Application

WANG Xiao, HE Zhen-Hua, WANG Shu-Jiang, FENG Hui-Yuan, WANG Xi-Lin   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploration,Chengdu University
    of Technology, Chengdu 610059, China; 2. Northwest Branch, Reaserch Institute of Petroleum
    Exploration & Development, PetroChina, Lanzhou 730020, China
  • Received:2009-12-29 Revised:2010-03-30 Online:2010-04-10 Published:2010-04-10

摘要:

在近地表速度结构变化较快的地区,能否做好静校正直接决定了地震勘探效果。而在复杂地区三维资料处理中,很难用一种方法彻底解决整个区块的静校正问题。为此,以非线性层析反演静校正方法为基础,在平面上对速度模型进行相带划分,以及用小折射和微测井资料作为初始模型,进行约束层析反演,可大大提高模型的垂向反演精度和空间合理性。对不同静校正方法具有成像优势的高频静校正量,采用拼接方法,在边界用函数插值方法进行处理,可实现多种方法在一个三维区块成像优势的结合。以上复杂地区三维静校正综合技术,在实际三维资料处理中见到了很好的应用效果。

关键词: 速度结构, 静校正, 相带, 约束函数

Abstract:

In the area near surface with swift change of velocity structure, static correction is significant for seismic exploration. A single method is hard to make a right static correction in the three-dimensional seismic integration. So, based on nonlinear tomographic inversion, phase belt plot of velocity model in plane section, and short refraction and minilog data as initial model, we can make the tomographic inversion improve the vertical inversion precision and spacial reasonability. For the high frequency static correction values that has imaging advantage, we piece together, then use function interpolation at boundary. Thus, the imaging advantage of different methods in a 3D block can be used. The 3D static correction technology has been used in some complex areas, and the good results has been gotten.

Key words: Velocity structure, Static correction, Phase belt, Constraint function.

中图分类号: 

  • TE132.1+4

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