油藏条件下聚合物溶液幂律指数的确定

Determination of the power law exponent of polymer solution in condition of oil reservoir

在理论分析和实际生产数据统计的基础上 ,确定了聚合物溶液质量浓度与其到注入井距离之间的变化呈现指数关系 ,且聚合物溶液幂律指数与聚合物溶液的质量浓度之间也呈指数变化关系 ;导出了 2种情况下聚合物溶液幂律指数的数学表达式 ;与以往的试凑法确定幂律指数相比较 ,该方法节省了试井解释时间 。

On the basis of theoretical analysis and the statistics of actual production data, we find out the exponential relationship between the concentration of polymer solution and the distance to injection well. Combining the exponential relationship between the power law exponent and the concentration of polymer solution, we can get the expression to determine the power law exponent of polymer solution. Compared to trial method used in explanation of well testing, this method can save expanation time, it is feasible.