新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (5): 644-646.

• 应用技术 • 上一篇    下一篇

一种切实可行的转换波静校正方法

马昭军1, 唐建明1,2, 刘连升3   

  1. 1.中国石化 西南分公司 勘探开发研究院 德阳分院, 四川 德阳 618000;
    2.成都理工大学 能源学院, 成都 610059;
    3.北京帕美智软件开发有限公司, 北京 100022
  • 收稿日期:2006-11-17 修回日期:2007-02-01 出版日期:2007-10-01 发布日期:2020-08-03
  • 作者简介:马昭军(1978-), 男, 四川遂宁人, 工程师, 硕士, 石油地球物理勘探,(Tel) 0838-2310804(E-mail) mazj_mazj@yahoo.com.cn.
  • 基金资助:
    中国石化重点科技攻关项目,川西坳陷须家河组地震勘探新技术开发应用(P05003)资助

A Feasible Method for Converted Wave Static Correction

MA Zhao-jun1, TANG Jian-ming1,2, LIU Lian-sheng3   

  1. 1. Deyang Branch, Research Institute of Exploration and Development, Southwest Company, Sinopec, Deyang, Sichuan 618000, China;
    2. Institute of Energy, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    3. Beijing Panimaging Software Development Company Ltd., Beijing 100022, China
  • Received:2006-11-17 Revised:2007-02-01 Online:2007-10-01 Published:2020-08-03

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摘要： 由于横波的低速带厚且不均匀,转换横波速度又比较低,因此转换波静校正量大且横向变化剧烈。针对这种情况提出一种简单又易于实现的转换波静校正方法。根据多分量微测井资料求取低速层纵、横波平均速度比,利用纵波检波点静校正量和该速度比来求取转换波长波长静校正量。在动校炮集上拾取较清楚的反射层时间,再通过拟合抛物线时间与实际拾取反射层时间的差来求取转换波短波长静校正量。实际数据处理表明,该静校正技术能解决转换波静校正问题,转换波记录质量得到了明显提高。该方法已经用于川西三维三分量转换波处理,取得了较好的效果。

关键词: 转换波, 静校正, 抛物线方程

Abstract: The thick and asymmetrical low-velocity belt of shear wave as well as low velocity of converted shear wave results in a great deal of converted wave static corrections and smart variations. This paper proposes a simple and feasible method for the converted wave static correction. The average velocity ratio of P-wave and S-wave is obtained by multi-component micro logging data. The converted wave long wavelength static correction is computed according to P-wave receiver statics and the ratio. The converted wave short wavelength static correction is gained by the difference between the fitted parabola time and the picked up reflection time through picking up clear reflection time on the dynamic correction shot gathers. The real data processing shows that this method can be used to solve the problem of converted wave static correction, and remarkably improve the quality of the converted wave records. The method has been applied to the 3D3C data processing in western Sichuan and good results have been obtained.

Key words: convered wave, static correction, parabola equation

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