摘要
为了确定岩体内部的孔隙及流体性质，运用地震衰减分析来区分地震信号谱与振幅特征的变化，分析在包含孔隙和裂隙的复杂环境下岩石属性特征和波的传播特征，乌审召地区主要目标层为上古生界二叠系石盒子组盒8段储层．该目标砂岩发育，但储层横向变化快，通过对乌审召实际地震资料处理结果表明，在频率域吸收衰减异常与岩石中含气有关，通过方法实践，采用该地震分析方法计算的衰减模式与高产区的关系比较确定，能够帮助确定新的潜在区域和勘探目标。
In order to determine porosity and fluid nature in the rock, use analysis of seismic attenuation to distinguish between seismic signal spectrum and the changes of the amplitude characteristics. Characteristics of rock properties and wave propagation are analyzed under the complex environment including pores and cracks. The main objective layers of Uxin Ju area are He8 Member reservoirs of Lower Shihezi Formation, Permian of Upper Paleozoic. Sandstone was developed in the objective reservoirs, but horizontally changes quickly. Results of seismic data processing of the Uxin Ju area show that the frequency domain attenuation anomalies are related to gas-bearing in rocks. The relationship between the high-yield districts and the attenuation model from the seismic analysis method are more determined, and can help to identify potential new regions and exploration targets.
