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[1]冉喜阳 周怀来 张益明 李雷豪 杨吉鑫.一种基于稀疏窗S变换的分频-重构波阻抗反演方法[J].中国海上油气,2019,31(04):75-84.[doi:10.11935/j.issn.1673-1506.2019.04.009]
 RAN Xiyang ZHOU Huailai ZHANG Yiming LI Leihao YANG Jixin.A frequency division-reconstruction wave impedance inversion method based on sparse window S transform[J].China Offshore Oil and Gas,2019,31(04):75-84.[doi:10.11935/j.issn.1673-1506.2019.04.009]
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一种基于稀疏窗S变换的分频-重构波阻抗反演方法()
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《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第31卷
期数:
2019年04期
页码:
75-84
栏目:
油气勘探
出版日期:
2019-07-25

文章信息/Info

Title:
A frequency division-reconstruction wave impedance inversion method based on sparse window S transform
文章编号:
1673-1506(2019)04-0075-10
作者:
冉喜阳123 周怀来12 张益明4 李雷豪12 杨吉鑫12
(1. 成都理工大学地球物理学院 四川成都 610059; 2. 成都理工大学油气藏地质及开发工程国家重点实验室 四川成都 610059; 3. 四川省地震局 四川成都 610041; 4. 中海油研究总院有限责任公司 北京 100028)
Author(s):
RAN Xiyang123 ZHOU Huailai12 ZHANG Yiming4 LI Leihao12 YANG Jixin12
(1. Institute of Geophysics, Chengdu University of Technology, Chengdu, Sichuan 610059, China; 2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China; 3. Sichuan Earthqua
关键词:
稀疏窗S变换 分频重构 波阻抗反演 能量聚集性 高分辨率
Keywords:
sparse window S transform frequency division-reconstruction wave impedance inversion energy concentration high resolution
分类号:
TE132.1+4
DOI:
10.11935/j.issn.1673-1506.2019.04.009
文献标志码:
A
摘要:
常规波阻抗反演一般使用全频带叠后数据进行反演,大多数反演结果受地震波主频控制,数据中有效频带的高频与低频部分的潜力没有得到充分利用,很难达到理想效果。本文提出了一种基于稀疏窗S变换的分频-重构波阻抗反演方法,首先对窗参数进行基于振幅谱的稀疏优化,根据不同信号的振幅谱作不同适应性窗参数优化,然后利用稀疏窗S变换对井数据进行处理,最后将分频井曲线反演与分频地震反演方法相结合,建立新的分频-重构波阻抗反演流程。模型试算、方法验证及实例应用表明,基于稀疏窗S变换的时频分析方法具有高分辨率和能量聚集的特性,分频-重构波阻抗反演结果与井吻合度更高,能够有效提高对断层及薄层的识别精度,具有良好的应用潜力。
Abstract:
Conventional wave impedance inversion generally adopts the full-band post-stack data for inversion. For most of the inversion results are controlled by the dominant frequency of seismic wave, the potentials of the high-frequency and low-frequency parts of the effective band in the data are not fully utilized, and therefore, the inversion results can hardly achieve the desired results. In this paper, a method of sparse window S transform- based frequency division-reconstruction wave impedance inversion is proposed. Firstly, the window parameters are sparsely optimized based on amplitude spectrum, and different adaptive window parameters are optimized according to the amplitude spectrum of different signals; and then, the sparse window S transform is utilized to process the well data; finally, both the frequency division well curve inversion method and the frequency division seismic inversion method are used to establish a new frequency division -reconstruction wave impedance inversion process. The results of model trial calculation and method verification match well with practical application results; this fact proves that the sparse window S transform-based time-frequency analysis method presents the characteristics of high-resolution and energy concentration, and the results of frequency division-reconstruction wave impedance inversion are more consistent with well data. This method can effectively improve the identification accuracy of faults and thin layers, and exhibits a good application prospect.

参考文献/References:

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备注/Memo

备注/Memo:
*中海油能源发展股份有限公司项目“基于De-ghost地震甚低频信息的储层流体流度反演方法研究(编号:GC-2017-ZC-2005)”部分研究成果。 第一作者简介: 冉喜阳,男,主要从事储层预测与流体识别方面的研究。地址:四川省成都市人民南路三段二十九号(邮编:610041)。E-mail:398842381@qq.com。
更新日期/Last Update: 1900-01-01