低渗透油田无因次采液指数归一化处理及应用

摘要：根据大庆朝阳沟油田提供的十块岩心相对渗透率曲线数据，首先将其进行归一化处理，得到两种类型的归一化相对渗透率曲线，在此基础上，计算出两种类型的无因次采液指数和含水率关系曲线，并将理论研究应用于实际区块中，对其开发效果进行分析。结果表明，符合第一类无因次采液指数的区块提液能力有限；符合第二类无因次采液指数的区块含水率高于50%以后可以提液，最大提液幅度为初期产液量的1.2倍左右。

The normalization processing and application of dimensionless fluid production index in low permeability oilfield

Abstract: According to ten cores data of relative permeability curves provided by Daqing Chaoyang gou oilfield, firstly, the normalization processing is carried on. Then two types of normalizing relative permeability curves are obtained. On that basis, two types of curves between dimensionless fluid production index and water cut are gained. The theoretical research is applied in practical block. And development effects are analyzed. Results shown that the block which is in accordance with the first kind of dimensionless fluid producing index has limited ability of improving liquid production rate; the block which is in accordance with the second kind of dimensionless fluid producing index can improve liquid production when the water cut is higher than 50%, the ultimate liquid production is 1.2 times than the initial liquid production.