超长源距声反射波测井数值模拟与远井界面成像

超长源距声反射波测井数值模拟与远井界面成像

宋立军^1,2, 马俊¹, 王克协¹

1. 吉林大学物理学院, 长春 130023; 2. 长春大学应用理学院, 长春 130022

收稿日期:2004-03-26 修回日期:1900-01-01 出版日期:2004-10-26 发布日期:2004-10-26
通讯作者: 王克协

Numerical simulation of acoustic reflected wave logging with excessively long source distance and imaging of interface far from the borehole

SONG Li-jun^1,2, MA Jun¹, WANG Ke-xie¹

1. College of Physics, Jilin University, Changchun 130023, China;2. College of Applied Science, Changchun University, Changchun 130022, China

Received:2004-03-26 Revised:1900-01-01 Online:2004-10-26 Published:2004-10-26
Contact: WANG Ke-xie

摘要/Abstract

摘要： 采用超长源距多接收点声源模型, 通过井孔声全波数值模拟计算, 考察了利用反射波作为探测柱状多层介质径向界面的可行性和方法. 计算了流体-固体-固体柱状三层井孔体系最远至30 m的阵列全波曲线, 远井界面反射波有明显显示, 与用理论推导的反射波到时-源距公式计算的时距曲线符合很好. 绘制了校正后（消除管波影响）的界面时间（深度）记录剖面图, 给出远井界面（同相轴）信息.

关键词: 声波测井, 反射波, 时间（深度）剖面图

Abstract: By means of the acoustic source model of multiple receiving points from excessively long source distance and the numerical simulation computation of the acoustic full-wave in the borehole, the feasibility and method of using reflected wave to detect the transverse interface of the cylindrical multi-layered media were investigated. An array of full-wave curves of the cylindrical triple-layered fluid-solid-solid borehole system that is 30 m away was calculated, and the reflected wave from the interface far from the borehole was clearly shown, which agrees fairly well with the time-distance curve calculated by virtue of the theoretically derived equations of source distance-arrival time of reflected wave. Finally, a cross-section chart of the interfa ce time(depth) records after adjustment (without the influence of tube wave) was drawn, and the information of interfacefar away from the borehole (of in- phase axis) was clearly presented.

Key words: acoustic well, logging reflected wave, time (depth) cross-section chart

中图分类号:

O422

宋立军, 马俊, 王克协. 超长源距声反射波测井数值模拟与远井界面成像[J]. J4, 2004, 42(04): 586-590.

SONG Li-jun, MA Jun, WANG Ke-xie. Numerical simulation of acoustic reflected wave logging with excessively long source distance and imaging of interface far from the borehole[J]. J4, 2004, 42(04): 586-590.

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