Numerical simulation of Alkalescence-surfactant-polymer flooding in the test area of the North-Two-West,Saertu Oil Field
Numerical simulation of Alkalescence-surfactant-polymer flooding in the test area of the North-Two-West,Saertu Oil Field
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发表时间：
2008
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通讯作者：
Huang Xiao-hui
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作者：
Huang Xiao-hui
利用大庆萨尔图油田北二西试验区的化学驱数值模型，分析了化学剂浓度、段塞大小和注入速度对含有主段塞、副段塞、前置段塞和后置段塞的碱 - 表面活性剂 - 聚合物驱油体系提高采收率的影响。主段塞中的碱浓度和表面活性剂浓度能显著影响原油采收率，且各自都有一个与最大采收率相关的最优值。提高碱 - 表面活性剂 - 聚合物主段塞或副段塞中的聚合物浓度将显著提高增油量。所有四个段塞大小的改变都会在一定程度上导致采收率的变化。
The effect of chemical concentration,slug size and injection rate on the enhanced oil recovery by alkali-surfactant-polymer flooding system with main slug,auxiliary slug,pre-positioned slug and post-positioned slug is analyzed with a numerical chemical flood model of the North-Two-West pilot area,Daqing Saertu oil field.Alkaline concentration and surfactant concentration in main slug can obviously affect oil recovery,and each of them has an optimal value relating to maximum recovery.Increasing polymer concentration for either alkali-surfactant-polymer main slug or auxiliary slug will significantly improve the incremental oil recovery.Change of sizes of all four slugs will result in change of recovery to a certain extent.