【摘要】 指出利用地震多波NMO速度信息,可以预测出目的地层的裂缝发育方向、裂缝分布范围;而且,针对各向异性介质,利用地震多波资料可以预测出裂缝密度以及裂缝内含物。实例研究结果表明了用地震多波NMO速度方法进行裂缝检测的实用性和正确性。更多还原

【Abstract】 The fractures are predicted quantitatively utilizing the field data from the west of China.The azimuthal NMO velocities can be used to estimate the orientation of the crack,and the distribution of the fracture.Moreover,the normal(ΔN) and tangential(ΔT) weaknesses of the fracture system can be obtained from the NMO velocities of the seismic multi-wave in the anisotropic media.ΔT gives a direct estimate of the crack density and the ratio ΔN/ΔT is a sensitive indicator of fluid saturation.The validity and applicability have been clearly demonstrated by the results of the field data.更多还原