石油与天然气地质 ›› 2010, Vol. 31 ›› Issue (2): 225-231.doi: 10.11743/ogg20100214

• 石油与天然气地质 • 上一篇    下一篇

辫状河流相薄砂体地震子波效应和识别方法

 黄军斌1, 高利军2, 高勇3, 王德发1   

  • 出版日期:2010-04-26 发布日期:2010-09-02

Wavelet effect and recognition methods of thin sand bodies in braided river facies

Huang Junbin1; Gao Lijun2; Gao Yong3; Wang Defa1   

  1. 1.China University of Geosciences; Beijing 100083; China;
    2.Halliburton Digital and Consulting Solutions; Beijing 100004; China; 
    3.Exploration and Development Research Institute; PetroChina Dagang Oilfield Company; Tianjin 300280; China
  • Online:2010-04-26 Published:2010-09-02

PDF (PC)

510

被引次数

15

摘要：

在地震资料频率一定的情况下，地震子波旁瓣效应会增加薄砂岩识别和解释的难度。为了研究子波旁瓣的影响程度，设计系列正演模型，利用不同频率的零相位雷克子波合成人工地震剖面，确定砂体位置、频率与地震子波旁瓣效应的关系，研究振幅类属性与薄砂体描述的关系。结果表明，综合利用多频带地震剖面和振幅类属性，可以可靠地解释和描述厚度大于1/8波长的辫状河流相薄砂岩储层。

关键词: 雷克子波, 振幅属性, 子波旁瓣, 旁瓣效应, 薄砂体

Abstract:

Under a fixed seismic frequency，wavelet side lobes may increase the difficulty of interpreting and recognizing thin sand bodies. To investigate the impacts of wavelet side lobe effects，we design a series of forward models and produce synthetic seismic profiles using zero phase Ricker wavelets of different frequencies. The purpose is to identify the relationship of sand body location and frequency with side lobe effects. This study also aims at exploring the relationship between amplitude attributes and the description of thin sand bodies. The results show that，an integrated use of multiˉfrequency profile and amplitude attributes can reliably interpret and describe thin sand bodies of braided river facies which are thicker than1/8wavelength.

Key words: Ricker wavelet, amplitude attribute, side lobe of wavelet, side lobe effect, thin sand body