双河油田Ⅴ_上层系二类储量高温聚合物驱先导性试验

Pilot Test of High Temperature Polymer Flooding for Type Ⅱ Reserves in the Upper Member of Formation Ⅴ in Shuanghe Oilfield

河南双河油田Ⅴ_上层系非均质性严重,油藏温度高达80.3℃,经多种聚合物性能评价,优选出耐高温的聚合物,提出了以水驱井网为基础、完善聚驱井网和提高井网控制程度的井网调整方法,并利用油藏数值模拟方法对注聚参数(注入速度,段塞量,段塞结构)进行了优化。现场实施后,取得了显著的效果,阶段累积增油2.35×104t,形成了一套二类储量高温聚合物驱方案设计技术。

Heterogeneity is serious and reservoir temperature is as high as 80.3℃ in the upper member of Formation Ⅴ in Shuanghe Oilfield. A high temperature resisting polymer is selected by using multi-polymer performance evaluation. A well pattern adjustment scheme is proposed for perfecting polymer flooding well pattern and raising its control level based on water injection well patterns. Polymer flooding parameters, such as injection velocity, number of slugs and slug structure are optimized by reservoir numerical simulation. Obvious field application effect is obtained with oil production increase of 2.35×104t,by which a set of technical schemes are proposed for high temperature polymer flooding of Type Ⅱ reserves.