This study of mercury injection curves from cores of extra low permeability reservoirs in Y and Z blocks in Ansai oilfield shows that the reservoirs are of singular and multiple fractal natures using fractal geometric formula with two parameters.

• 摘要利用带有两参数分形几何公式对安塞油田Y、Z区块特低渗储集层岩心压汞资料数据进行了分析，结果表明，该区块储集层具有单一分形和多重分形特征。