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通过对普通聚合物与含添加剂的耐高温聚合物的对比实验,认为耐高温聚合物在75℃下老化有较好的稳定性,可以用于河南油田聚合物驱先导试验。不同含氧量的溶液有不同的稳定性,含氧量越低,稳定性越好,当含氧量降到1.0mg/L以下时聚合物的稳定性大大提高。模拟油层条件下的实验证明,油砂的存在使聚合物溶液的长期稳定性进一步提高。现场先导试验经过2年多的聚合物溶液的注入,中心井及中心区见到了明显的增油降水效果,数模预测到1999年底中心井可提高采收率10%,取得了一定的经济效益和经验,为工业化推广应用奠定了基础
By comparing the ordinary polymers with the high temperature resistant polymer containing additives, it is concluded that the high temperature resistant polymer has better stability at 75 ℃ and can be used for the pilot study of polymer flooding in Henan Oilfield. Different oxygen content of the solution has different stability, the lower the oxygen content, the better the stability, when the oxygen content dropped to 1.0mg / L the following polymer stability greatly improved. Experiments under the simulated oil layer prove that the existence of oil sands further improves the long-term stability of the polymer solution. Field pilot test After more than two years of polymer solution injection, the central well and the central area have seen significant oil precipitation enhancement effect. The numerical model predicts that by the end of 1999, the central well will increase oil recovery by 10% and achieve certain economic benefits And experience, laid the foundation for the promotion and application of industrialization