基于Wigner分布的谱分解技术在油气检测中的应用
首发时间:2012-01-04
摘要:本文提出了一种基于改进核函数的Wigner分布谱分解方法。即首先采用模糊域核函数滤波法抑制Wigner分布的交叉项,并在分析了指数型核函数后,给出了改进的新核函数。通过对新的核函数交叉项抑制能力的数值模拟,验证了新的核函数较指数核函数对交叉项有更好的抑制能力。最后对实际地震数据进行了分频处理,利用含油气储层低频能量较强,高频能量较弱的特点,成功指示了油气有利区的存在,验证了本文所提出方法的有效性。
关键词: Wigner分布 交叉项 核函数 谱分解 油气检测
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Application of Spectral Decomposition Technology in Hydroearbon Detection Based on Wigner distribution
Abstract:A WVD spectral decomposition method based improved kernel in this paper.At first,it compresses cross terms with the method of ambiguous region kernel filter,and on the basis of analyzing exponential kernel, a improved new kernel is presented.The better compressing ability for cross of new kernel is verified by simulation. Lastly,in data discrete frequency processing,this paper makes use of oil and gas-bearing reservoir has the features: low frequency energy is stronger,but high frequency energy is weeker,and because the method indicates the presence of advantageous areas for oil and gas sucssfully,so its efficiency is verified.
Keywords: Wigner Distribution cross term kernel spectral decomposition hydrocarbon detection
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