石油与天然气地质 ›› 2009, Vol. 30 ›› Issue (2): 245-249.doi: 10.11743/ogg20090218

• 技术方法应用 • 上一篇    下一篇

川西坳陷须家河组小波域层间吸收属性应用研究

徐天吉1,2, 程冰洁3, 唐建明1, 李显贵1   

  1. 1. 中国石油化工股份有限公司 西南分公司 勘探开发研究院 德阳分院,四川 德阳 618000;
    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. 中国石油化工股份有限公司 西南分公司 博士后科研工作站,四川 成都 610081
  • 收稿日期:2008-05-09 出版日期:2009-04-25 发布日期:2012-01-16
  • 基金资助:

    中石化科研项目(P05003)

A study on application of interbed absorption attribute in wavelet domain to the Xujiahe Formation in western Sichuan Depression

Xu Tianji1,2, Cheng Bingjie3, Tang Jianming1, Li Xiangui1   

  1. 1. Deyang Branch of Exploration & Production Research Institute, SINOPEC Southwest Company, Deyang Sichuan 618000, China;
    2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    3. Post-doctoral Research Center, SINOPEC Southwest Company, Chengdu, Sichuan 610081, China
  • Received:2008-05-09 Online:2009-04-25 Published:2012-01-16

PDF (PC)

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摘要：

基于小波理论,对地震资料进行小波域分频成像处理,具有突出地质体的局部化地质特征、储层的微观结构、反映薄互层反射的重要信息等优点。将小波域二维分频地震剖面进行重构,可以形成地震波的振幅与时间、频率直接相关的三维地震数据体。再沿目标层段或井位置点分析地震波的层间吸收属性、高频衰减特征,能够获取圈定储层与预测油气的重要参考信息。将该方法运用到川西坳陷深层须家河组气藏的储层预测与含气性检测中,获得了与测井记录吻合良好的预测效果。

关键词: 小波域, 分频成像, 地震资料, 层间吸收, 应用研究, 须家河组, 川西坳陷

Abstract:

Wavelet theory-based frequency-division processing of seismic data has the advantages of highlighting the local geological characteristics of geologic bodies and microstructure of reservoirs,and revealing the important information contained in thin interbed reflection.Reconstruction of two-dimension frequency-division seismic profile in wavelet domain can generate a 3D seismic data cube,of which the wave amplitude is directly related to the time and frequency.Then,important information for locating and predicting oil and gas reservoirs may be obtained through analysis of the interbed absorption attribute and high-frequency attenuation along the target layers or at the well points.Application of the technology to reservoir prediction and gas detection of the deep Xujiahe Formation in western Sichuan Depression gave out satisfactory results in accordance with log data.

Key words: Wavelet domain, frequency-division imaging, seismic data, interbed absorption, applied research, Xujiahe Formation, Western Sichuan Depression

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