喇嘛甸油田合理地层压力研究

对于注水开发砂岩油田，保持合理的地层压力既关系到油田开发效果，又影响到油田开发总体效益。从喇嘛甸油田室内高压物性、相对渗透率曲线实验和现场实际情况出发，研究了不同地层压力开采时，溶解气对原油粘度进而对采收率的影响。以此为基础，进一步用经济评价方法确定了喇嘛甸油田合理地层压力及油井流压水平。分析认为，喇嘛甸油田应保持饱和压力开采，水驱最终采收率最高，经济效益最好，且有利于保护套管。

Study on reasonable formation pressure in Lamadian Oilfield

In a water flooded sandstone oilfield, keeping a reasonable formation pressure is important for both the development effect and the total development benefit. According to the laboratory high pressure property, relative permeability curve experiment and pilot information of Lamadian oilfield, this paper studies effect of dissolved gas on oil viscosity and recovery. It furtherly analyzes the reasonable formation pressure and oil well flow pressure using economic evaluation. The analysis shows that the oilfield should maintain saturated pressure production with the highest the water flooded ultimate recovery and economic benefit, and in favour of protecting the casings.