摘要
本文针对X地区含气砂岩与泥岩波阻抗差异不大、振幅变弱、视频率增高、波形分叉合并、断续和下拉等异常特征,采用综合识别的方法圈定了天然气储集体的范围,并对其应用效果进行了验证。
It is not very useful to distinguish the characteristics of the reflection on gas layers in the region containing compact sand-pelitic rocks simply by using regular 'dark,level and light spots' ,especially in the region having aerated sandstones and mud stone interbeading.They do not form resistant boundaries of strong waves because the boundary velocity of two layers is aproximately near.In this paper the writers have discussed comprehensive distinction method of the abnormal characteristics ( amplitude, phase, frequency and wave form ) in accordance with the abnormal characteristics of reflection waves, that is, the amplitude is getling wearer, the sight-frequency is increasing and the wave patterns are divided, combined with each other, broken and continued and pulled down in the aerated gas layers in X region.So, they have trapped the range of accumulate bodies of natural gas and examined the results of the method.
