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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%。
Based on eight data of 50 well layers such as mercury intrusion, casting body, scanning electron microscope and water-flooding test, this paper presents the characteristics of reservoirs and physical properties of reservoirs in Maling low-permeability reservoirs, Pore parameter combinations to determine the Maling oil field pore structure types. The pore structure of Maling low permeability reservoir can be divided into five types in general, and a mathematical discriminant is established. Five types of pore structure control of water flooding efficiency. Laboratory tests show that the contradiction between the water flooding low efficiency. Adjusting the contradiction between layers and improving the low-speed and low-efficiency layers can still recover recoverable reserves of 13.4-31.7%.