Application of synchrosqueezed wavelet transforms to estimate the reservoir fluid mobility

Application of synchrosqueezed wavelet transforms to estimate the reservoir fluid mobility
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应用同步压缩小波变换估计储层流体流动性

DOI:
10.1111/1365-2478.12622
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发表时间:
2018-06
影响因子:
2.6
通讯作者:
Hui Chen
Hui Chen
中科院分区:
地球科学3区
文献类型:
--
作者:
Ya-Juan Xue;Jun-Xing Cao;Gu-Lan Zhang;Guang-Hui Cheng;Hui Chen

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本文提出了一种利用同步压缩子波变换估计储层流体流度的新方法。同步压缩小波变换采用了一种重新分配的方法,可以提高传统时频变换的时间和空间分辨率。基于同步压缩小波变换的流体流度估计需要有利地选择敏感的低频段,并且更准确地估计频谱中低频段的变化率。在基于同步压缩小波变换的流体流度估计中采用最小二乘拟合方法,以提高频谱中低频段变化率的估计精度。我们验证我们的方法与模型测试。两个油田实例表明,基于同步压缩小波变换的流体流度估计方法能更好地反映流体的储集空间,并能很好地监测烃饱和储层。
This paper presents a new methodology for estimating reservoir fluid mobility using synchrosqueezed wavelet transforms. Synchrosqueezed wavelet transforms, which adopts a reassignment method, can improve the temporal and spatial resolutions of conventional time‐frequency transforms. The synchrosqueezed wavelet transforms‐based fluid mobility estimation requires the favourable selection of sensitive low‐frequency segment and more accurate estimation of the change rate of the low frequency segment in the spectrum. The least‐squares fitting method is employed in the synchrosqueezed wavelet transforms‐based fluid mobility estimation for improving the precision of the estimation of change rate of the low‐frequency segment in the spectrum. We validate our approach with a model test. Two field examples are used to illustrate that the fluid mobility estimation using the synchrosqueezed wavelet transforms‐based method gives a better reflection of fluid storage space and monitors hydrocarbon‐saturated reservoirs well.
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