利用多波地震资料反演煤层裂隙参数
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摘要
研究了两种利用多波多分量地震资料反演煤层裂隙的方法。首先从弹性波动方程出发,通过正演记录研究了介质的方位各向异性对转换横波的偏振特性,在此基础上分析了利用横波记录的方位角道集获取地下裂隙参数的可行性与基本原理。然后,提出了一种在共转换点道集中利用基于多道统计的角度扫描法求取地下目标煤层的裂隙发育方位的方法。实际资料处理证明了该方法的准确性与可靠性。
The paper studied two methods of coal fracture inversion with multiwave components seismic data.Firstly,based on forward seismograms of anisotropic media,the paper studied the polarization characteristics of P-SV wave,and then analyzed the practicability and principles of obtaining the fracture parameters underground by means of the azimuth gathering.Secondly,the paper proposed a new fracture parameters inversion technique from which the fracture azimuth is obtained by a multi-trace scan technique in common conversion point(CCP) gathering.The application of field data has proved the accuracy and reliability of these two methods.
引文
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