摘要
注聚末期后注入非均相体系已应用于海上某油田提高采收率。注入非均相体系过程中不同段塞组合方式将影响油田最终采收率。为了符合海上油田开采降本高效的特性,通过正交实验设计了9组不同段塞组合方式,优化黏弹性颗粒驱油剂PPG浓度、聚合物浓度和段塞大小。优化后的最优段塞组合方式为PPG浓度1000 mg/L+聚合物浓度1800 mg/L+段塞尺寸0.4 PV,可最终提高采收率至70.63%,可为油田现场施工方案提供设计思路。
The injection of heterogeneous systems after the end of polymer injection period has been applied to an offshore oilfield for further enhancing oil recovery.Different slug combinations will affect the ultimate recovery of the oilfield during the injection of heterogeneous systems.In order to meet the high efficiency of offshore oilfield exploitation,9 different slug combinations to optimize the PPG concentration,polymer concentration and slug size of viscoelastic particle flooding agent were designed with the help of orthogonal experimental design.The optimized optimal slug combination method was determined as follows:PPG concentration 1000 mg/L,polymer concentration 1800 mg/L,slug size 0.4 PV,which ultimately improved the oil recovery to 70.63%.
作者
赵春森
沈忱
ZHAO Chun-sen;SHEN Chen(College of Petroleum Engineering,Northeast Petroleum University,Heilongjiang Daqing 163318,China)
出处
《当代化工》
CAS
2019年第12期2766-2768,2816,共4页
Contemporary Chemical Industry
关键词
化学驱油
堵水
段塞组合
Chemical flooding
Water plugging
slug combination
