小波能谱识别储层流体性质

流体识别是储层评价中的重要内容和难点。为了能够有效地识别流体性质,采取了小波能谱的方法识别流体性质,该方法通过对电阻率曲线进行小波变换处理,建立不同尺度下电阻率曲线的小波变换曲线,然后对小波变换曲线进行能谱分析,利用谱分析识别流体性质。实际资料处理发现,不同流体性质其不同尺度下能谱峰值各不相同，即油、水层所对应的能谱峰值其所在尺度各不相同。某井4个储层的小波能谱识别结果与试油结论完全符合,较原解释结论提高了50%的准确度。

Identification of reservoir fluid property using wavelet energy spectrum

Reservoir fluid identification is an important and difficult issue in reservoir evaluation.The author proposed to use wavelet energy spectrum to identify fluid property.Firstly,we generate wavelet transformed resistivity curves of different scale by performing wavelet transform on resistivity curve,and then identify the fluid properties via spectral analysis.Tests on real data show that the peak of energy spectrum varies with fluid property under different scale.The results from wave energy spectrum identif...