鄂北致密薄储层地震响应特征分析  

Analysis of seismic response characteristics of thin tight reservoirs in northern Ordos Basin

作　　者：胡玮[1] 韩立国[1] 段超然 孙宏宇[1] 

机构地区：[1]吉林大学地球探测科学与技术学院,长春130026

出　　处：《世界地质》2014年第4期925-933,共9页World Geology

基　　金：国家科技重大专项(大型油气田及煤层气开发)(2011zx05045)

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。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.

关 键 词：鄂尔多斯盆地北部 致密砂岩 薄互层 正演分析 AVO响应 

分 类 号：P631.414[天文地球—地质矿产勘探]