石油学报 ›› 1988, Vol. 9 ›› Issue (1): 36-45.DOI: 10.7623/syxb198801005

• 论文 • 上一篇    下一篇

长源距全波波形频谱分析的主要影响因素及一些初步结果

谭廷栋1, 李宁1, 郭小红2   

  1. 1. 石油勘探开发科学研究院研究生部;
    2. 中国海洋石油测井公司 北京
  • 修回日期:1987-03-02 出版日期:1988-01-25 发布日期:2013-07-08

MAIN FACTORS AFFECTING OF THE LSS FULL WAVEFORM SPECTRAL ANALYSIS AND SOME PRIMARY RESULTS

Tan Tingdong1, Li Ning1, Guo Xiaohong2   

  1. 1. Gratuate School of Research Institute of Petroleum Exploration Development, Beijing;
    2. Chinese Offshore Oil Logging Comprny, Beijing
  • Revised:1987-03-02 Online:1988-01-25 Published:2013-07-08

摘要: 本文讨论实测长源距全波波形频谱分析的原理及主要影响因素,导出了频率分析误差的估计式。在此基础上,分析了全波波形每个周期的频谱变化规律,给出了一些常见岩石的纵波、横波和斯通利波的主频、次主频数值,并用计算机处理出了这三个波型O主频的连续变化曲线。尤其重要的是,在分析功率谱的基础上我们得到了指示气层的有效曲线DASP。本文所有结果全部是根据实际测井波形得到的,有关图表均为实例。

关键词: 频谱分析, 全波波形, 主要影响因素, 分析结果, 主频数, 长源距, 采样点数, 斯通利波, 频率, 过零点

Abstract: The principle of the spectral analysis of actual full waveforms from the Long Spacing Sonic wave (LSS), as well as the main factors affecting this analysis, are discussed and the formula for the estimation of frequency errors is derived also. From these, the variations in the spetrum of each period on the waveforms are analysed and the primary and secondary spectrum values of the compressional, shear and Stoneley waves of some common rocks are given. The continuous primary spectrum of these three types of waves are given The most important is that we work out DASP curve which has been proved to be effective to indicate gas-bearing layers. All results in this paper are based on actual logging waveforms, and all tables and figures are taking from actual field cases.