Abstract: Based on data from mercury injection, die casts, electron microscopic scanning, water drive experiments etc. for 50 wells, the pore structures of the different pays in the Malin oil field are classified into 5 types, for each of which a discriminant is established. Experiments show that their water drive efficiency are different from each other,those with strong in-layer interferences are low in efficiency. After regulation of the interferences, the efficiency is improved, and from 13.4 to 31.7% more of the recoverable reserve can be produced.

摘要： 本文根据50个井层的压汞、铸体、电镜扫描、水驱油试验等八项资料,从马岭低渗油藏储层特征和油层物性的基本属性出发,提出用压汞和铸体孔隙的参数组合,确定马岭油田各油层的孔隙结构类型。马岭低渗油藏的孔隙结构大体上分五类,并建立了数学判别式。五类孔隙结构控制的水驱油效率不同。室内组合试验表明,层间矛盾的水驱油效率低。调整层间矛盾、改善低速低效层,尚能采出可采储量的13.4～31.7%。

关键词: 孔隙结构特征参数, 水驱油效率, 低渗油藏, 相对渗透率, 马岭油田, 层间矛盾, 电镜扫描, 结构网络, 可采储量, 油层