测井技术2011，Vol.35Issue(4)：331-334,4.
基于时频分析的储层裂缝识别方法
Reservoir Fracture Identification Method Based on Time-frequency Analysis
摘要
Abstract
The size and difference of dual laterolog resistivity are commonly used to identify fractures. But it is also affected by other factors, so the resolution of the fracture identification is not high. To solve these problems, studied are the principle of time-frequency analysis and short time Fourier transform, and then discussed are the implicit information of the fractures in the dual laterolog by using the time-frequency analysis, which can improve the ability to identify fractures. The method is applied to a number of wells in Tarim oilfield, the results of which show that using Hamming window function and selecting 239 and 29 samples of the long and short window function to strike the amplitude and spectrum of the resistivity curves can greatly improve the ability to distinguish the fractures. The fracture identification method is based on striking a short time Fourier Transform in the resistivity curves to get the spectrum characteristics, thereby expanding techniques and methods of identifying fractures with the conventional resistivity logging data.关键词
测井解释/双侧向电阻率/时频分析/短时傅里叶变换/裂缝识别Key words
log interpretation, dual laterolog resistivity, time-frequency analysis, short time Fourier transform, fracture identification分类
天文与地球科学引用本文复制引用
司马立强,杨洪鹏,姚军朋,张凤生,李勇..基于时频分析的储层裂缝识别方法[J].测井技术,2011,35(4):331-334,4.基金项目
国家高技术研究发展计划(863计划)“特殊储层测井识别与地层参数定量评估技术”(编号:2006AA06Z220) （863计划）
