不同注聚时机聚合物驱含水率变化规律研究

因海上平台寿命有限,研究聚合物驱不同注聚时机的生产特征及产能预测,对在有效时间内实现经济高效生产很有必要。通过一维物理模拟实验和数值模拟方法,研究了不同注聚时机聚合物驱含水率变化规律。研究结果显示,早期注聚可以提高油藏最终采收率,但含水变化率随注聚时机的延后而增大。综合分析认为,通过动态数据的含水变化率总结,建立累计产油量和含水变化率的关系式,可以实现对注聚受效井生产能力的预测。

Research on Variation of Polymer Injection Water-cut at Different Injection Time

As offshore oilfields are limited by the life span of offshore platform, it is necessary to do research on the production characteristic of different polymer injection time and the method of productivity evaluation for economic and efficient production in the limited period. Based on methods of one-dimensional physical simulation experiments and numerical simulation, the polymer flooding water-cut variation law in different injection-times has been studied in this paper. Results have been showed that it is feasible to inject polymer early to enhance oil recovery, but the water cut change rate would increase when the polymer injection time delays. It is thought, with comprehensive analysis, that it is practicable for productivity evaluation of wells effectively polymer-injected to establish the relation between cumulative oil production and water-cut variation rate on the basis of conclusion for the water-cut of dynamic data.