计算物理 ›› 1999, Vol. 16 ›› Issue (6): 651-655.

• 论文 • 上一篇    下一篇

改进的PV-FD方法与沿井孔传播声波通过层的精细描述

马俊, 董和风, 王克协   

  1. 吉林大学物理系, 长春 130023
  • 收稿日期:1998-06-27 修回日期:1999-03-15 出版日期:1999-11-25 发布日期:1999-11-25
  • 作者简介:马俊,男,33,讲师,博士
  • 基金资助:
    国家自然科学基金资助项目

Improved PV-FD method and the fine description of the acoustic wave along borehole going through horizontal layer

Ma Jun Dong, Hefeng, Wang Kexie   

  1. Jilin University, Changchun 130023
  • Received:1998-06-27 Revised:1999-03-15 Online:1999-11-25 Published:1999-11-25

摘要: 采用改进的声压-速度有限差分(PV-FD) 数值模拟方法,着重研究水平薄层及裂缝对声波测井中全波列的影响。数值模拟了井外出现多种非对称水平薄层情况下的阵列声波记录,并模拟计算和绘制了移动测井仪器记录的实测声波变密度图。通过(斯通利波限幅) 放大,各类波通过界面和层的传播都得到精细的描述。

关键词: 阵列声波测井, 薄层与裂缝, 全波计算机模拟

Abstract: It emphasizes on the research of effects of thin layer and fissure on the full waveform is acoustic well logging by using the numerical simulation in the improved pressure-velocity finite difference (PV-FD) method. Array acoustic wave train records are numerically simulated for many sorts of asymmetrical horizontal layers around boreholes. And the variable density pattern of the really measured acoustic waveforms recorded by moving well logging tool is also simulatingly calculated and drawn. Being amplified (through the limitation to Stoneley wave's amplitude), the propagation of different types of waves through interface or layer is finely described.

Key words: array acoustic well logging, thin layer and fissure, full waveform numerical simulation

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