【摘要】 鄂尔多斯盆地北部大牛地气田塔巴庙区块致密薄层发育。利用岩石物理等数据的物性参数,对不同储集条件下的薄层、薄互层进行地震正演分析。结果表明:在薄层特别是薄互层条件下,叠前波场响应特征十分复杂,有别于常规AVO类型的变化规律,且含气层和干层的响应特征有明显差异。根据叠前地震波场的响应特征和不同的变化规律可以细化薄层研究,进一步识别储集类型。更多还原

【Abstract】 In the north of Ordos Basin,the thin tight reservoirs in Tabamiao area of Daniudi gas field develped well. The authors construct seism forward modeling for thin bed and thin-interbedding under different kinds of reservoir conditions by rock physical parameters. The results show that the pre-stack seismic response is complicated in thin bed,especially in thin-interbedding,which is different from the change regulation of normal AVO type.The seismic response characteristics of the dry beds are obviously different from the gas-bearing beds. Based on the pre-stack seismic response characteristics and different change regulation,the research of thin bed in detail can be carried out,which helps us to identify the type of reservoirs.更多还原