吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (6): 1876-1888.doi: 10.13278/j.cnki.jjuese.20170313

• 地球探测与信息技术 • 上一篇    

辽河盆地东部凹陷含气孔、裂隙火成岩地层斯通利波响应特征

王祝文, 徐方慧, 刘菁华, 宁琴琴, 于洋   

  1. 吉林大学地球探测科学与技术学院, 长春 130026
  • 收稿日期:2018-02-26 发布日期:2018-11-26
  • 通讯作者: 刘菁华(1963-),女,教授,博士,主要从事核地球物理、地球物理测井等解释理论和方法的教学与科研工作,E-mail:jinghua@jlu.edu.cn E-mail:jinghua@jlu.edu.cn
  • 作者简介:王祝文(1961-),男,教授,博士,博士生导师,主要从事地球物理测井、核地球物理、测井新方法新技术等解释理论和方法的教学与科研工作,E-mail:wangzhuwen@email.jlu.edu.cn
  • 基金资助:
    国家重点基础研究发展计划（"973"计划）项目（2012CB822002）；国家自然科学基金项目（41874135）

Stoneley Wave Response Characteristics of Gas-Bearing Fractural Volcanic Formation in Liaohe Eastern Depression

Wang Zhuwen, Xu Fanghui, Liu Jinghua, Ning Qinqin, Yu Yang   

  1. College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China
  • Received:2018-02-26 Published:2018-11-26
  • Supported by:
    Supported by National Key Basic Research Program of China("973" Plan)(2012CB822002) and National Natural Science Foundation of China (41874135)

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摘要： 为了有效地识别和评价裂缝性地层，对辽河盆地东部凹陷地区含气孔、裂隙地层的单极子阵列声波测井数据进行了斯通利波波场分离（中值滤波）和希尔伯特黄变换（HHT）。研究表明：裂隙和油气通常会使斯通利波的能量衰减（主要发生在高频）、主频下降和到时滞后，这三者具有相关性；裂隙会使反射斯通利波能量增强，反射系数变大；高频和低频斯通利波的比值简称为能量比，能量比接近零时对应渗透性裂隙地层，能量比较小但有一定数值时可能对应渗透性孔隙地层；固有模态函数保留了原始数据固有的物理特性，HHT幅值谱从时间和频率两个方面突出了阵列声波的动力特性。实测数据的傅里叶变换和HHT均能对储层性质进行一定的评价，HHT放大了阵列声波信号对于地层性质的敏感程度，易于研究的分析对比。

关键词: 含气孔、裂隙地层, 斯通利波, 中值滤波, 希尔伯特黄变换(HHT), 辽河盆地, 火成岩地层

Abstract: Nowadays, fractured reservoirs have attracted more and more attention, and how to effectively identify and evaluate a fractured formation has also been widely discussed. Wave-field separation and HHT were applied to the array acoustic logging data of the gas bearing fractured porous formation in Liaohe basin. The following conclusions are obtained:the presence of fractures and oil/gas causes attenuation of Stoneley wave energy (occurred mainly in high frequency section), basic frequency decrease and time lag, and they are correlated. The Stoneley wave energy and the reflection coefficient become larger along with the increase of the fractures. The ratio of high frequency and low frequency of Stoneley wave is called energy ratio. When the energy ratio is close to zero, it corresponds to the permeable fractured formation; while the energy ratio is relatively small, it may correspond to the permeable porous formation. The IMF retains the inherent physical properties of the raw array acoustic data, and the HHT spectrum contains abundant information, which can highlight the dynamic characteristics of array acoustic waves from time and frequency. Fourier transform and HHT can be used to evaluate the reservoir properties. HHT can magnify the sensitivity of array acoustic signals to formation properties and is easy to analyze and compare.

Key words: gas bearing fractured porous formation, Stoneley wave, wave-field separation, HHT, Liaohe basin, volcanic formation

中图分类号: 

  • P631.8
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