【摘要】 塔里木盆地英买A区碳酸盐岩储层发育,但储层类型多样且非均质性较强,储层含油气性存在较大的差异,给该区油气上产增加了难度。因此本文以地质、测井和地震资料为基础,分析了不同成因储层的地震响应特征,明确了"串珠"和"片状强反射"储层可开展叠前AVO油气检测;进而以岩石物理方法为基础,进行流体替换和正演分析,确定这两类含油气储层的AVO敏感属性为P×G属性,据此开展了这两类储层含油气性的预测。通过实际钻井资料验证,该方法预测结果的准确度高,可以作为该区井位部署的重要依据。更多还原

【Abstract】 There are typical carbonate reservoirs with different types and serious heterogeneity in Ying-mai A area,Tarim Basin.Hydrocarbon distribution is irregular in these carbonate reservoirs,which affects oil & gas production increase.Based on geological,logging,and seismic data,we analyze seismic response characteristics of different geo-genetic reservoirs in this paper,and extract seismic attributes to predict carbonate reservoirs.It is found that hydrocarbon in carbonate reservoirs withbead-like reflection "andstrong flaky-like reflection" could be effectively detected by prestack AVO.Then,based on rock physic methods,fluid substitution modeling is conducted to analyze AVO sensitive attribute to predict hydrocarbon distribution in these two types of carbonate reservoirs.Real drilling data prove that hydrocarbon prediction with prestack AVO obtains good results and has significance for the future well deployment.更多还原