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为研究聚合物溶液运移过程中老化作用对油田采收率的影响,设计了聚合物溶液的动态老化实验,通过不同体积比的聚合物溶液混合过程模拟新老聚合物溶液混合下的动态老化过程。实验结果表明,混合后聚合物溶液的粘度约等于混合前各自溶液粘度以质量为权值的加权和,与实测粘度的最大差值不超过1.0mPa·s;聚合物溶液的混合老化过程与以往的静态老化过程类似,因此传统的静态老化过程可以用于近似聚合物溶液运移过程中的动态老化过程。通过数据分析,提出了混合后聚合物溶液粘度的估算方法。在此基础上,提出了相应的数值模拟思路。计算结果表明,聚合物溶液的老化作用对油田采收率影响较大,在数值模拟中需要考虑老化作用对油田采收率的影响。在油田的实际开发过程中,需要对聚合物溶液的热稳定性进行定量评估。
In order to study the effect of aging on oil recovery during polymer migration, the dynamic aging experiment of polymer solution was designed. The dynamic aging of polymer solution was simulated by mixing different volume ratio of polymer solution process. The experimental results show that the viscosity of the polymer solution after mixing is about equal to the weighted sum of the mass of the respective solution before mixing, and the maximum difference from the measured viscosity does not exceed 1.0 mPa · s. The mixed aging process of the polymer solution is the same as in the past Of the static aging process is similar, so the traditional static aging process can be used to approximate the dynamic polymer solution migration process of aging. Through the data analysis, the method of estimating the viscosity of the polymer solution after mixing is proposed. On this basis, put forward the corresponding numerical simulation ideas. The calculated results show that the aging of polymer solution has a great influence on oil recovery, and the effect of aging on oil recovery should be considered in numerical simulation. The actual development of the field requires a quantitative assessment of the thermal stability of the polymer solution.