Three - component ( 3c ) seismic survey with p - wave source and 3c geophones has drawn much attention for its great success in identification of lithologies , fractures , and fluids 摘要纵波震源激发、三分量检波器接收的三分量地震勘探,因在岩性、裂隙和流体识别等方面获得成功,而备受关注。
Get consistent rock parameters : p - wave velocity , porosity , and mineral properties of sands , fluid modulus and density . for multiphase fluids , we need to know properties and fractions of each component 获取一致的岩石参数: p波速度,孔隙度和砂体的矿物特性,流体模量和密度。对多相位流体,我们需要知道每个分量的特性和组成。
The resalts of numerical simulating indicat that velosity of p - wave has gentle anisotropy in fructured media at same time , the change of fractured density and azimuty has a little effects on velosity of p - wave 其数值模拟表明,在裂隙介质中,地震纵波速度只具弱的各向异性,同时裂隙密度和裂缝方位的变化对纵波速度的影响不大。
Using the directional characteristic of the positive direction explodes elongated charge , wavefront of the elongated charge in the explode location shown higher directivity is in - phase stacked , and also propitious for p - wave to explode and travel 细长药柱震源利用正向激发长药柱的定向性特点,达到激发后的波前面在垂直向下的方向上是同相叠加的,显示出很强的定向性,有利于纵波的激发和传播。
The combination of soil layer has negligible effect on the p - wave propagation . 4 the effect of complex media basin on seismic wave propagation the significant parameters controlling the propagation in basin contain sediments / bedrock shear - wave velocity contrast , sediment depth and the degree of saturation 4 、复杂介质情况下盆地对地震波传播的影响基岩与沉积层的剪切波速比、沉积层的深度、沉积层的饱和度是影响地震波在沉积盆地中传播的重要因素。