摘要
薄油气储层的识别和解释中存在极其微弱的有效信号 ,对这些有效信号进行混沌检测的先决条件是检测模型存在混沌区域 .本文以微弱方波有效信号为例 ,运用Melnikov方法就混沌检测模型 (Dufing方程 )的混沌判据问题进行数学分析 ,证明并推导该数学模型出现混沌状态的临界值 ,为薄油气储层的识别和解释中的微弱信号的混沌检测提供理论依据 .
There is very weak and effective signal in the discrimination and explanation for the thin storing up layer of oil and gas.It is the prelondition of the chaotic detection that checking model have chaos area for these chaotic detection of weak effective signal .In this paper ,the criterion of chaotic model (Duffing equation) is researched with Melnikov method for weak square wave signal .The valve value ranges of the mathematic model to be on a state of chaos is deduced and the evidences in theory is proved for chaotic detection of weak signal in the thin storing up layer of oil and gas.
出处
《地球物理学进展》
CSCD
2002年第1期133-136,共4页
Progress in Geophysics
基金
国土资源部"十五"重点科技攻关项目 (2 0 0 0 10 10 2 0 4)资助
