A块二类油层聚表剂驱阶段性认识

The Cognition of the Second Class Oil Zones Polymer Flooding in the A Block

对A块二类油层2009年2月改注聚表剂以来,注入井、采出井动态特征进行了分析。通过研究改注聚表剂以来,注入井注入压力、注入量、注入浓度、注入粘度、视吸水指数等参数的变化,得出结论认为:应加大注入井措施力度的同时,调整注入井注入参数,加强聚表剂注入;针对采出井采液指数下降、供液不足及沉没度低的井增多的情况,应及时调整机采参数,对采出井薄差油层压裂改造,以提高注聚效果。

Since the A block of sub-layers has been changed agent of polymer sheet in February 2009, injection wells, recovery wells dynamic characteristics were analyzed. By studying the change agent of polymer sheet since the injection well injection pressure, injection rate, feed concentration, injection viscosity, water absorption index as the parameter changes concluded that： the measures should be increased on the intensity of injection well, while adjusting the injection well injection parameters to enhance poly table agent injection; for the recovery wells, fluid index decreased for liquid enough and sank low wells increase, it should be timely adjusted machine production parameters on the recovery wells thin and poor reservoirs fracturing to enhance infuse effect of polymer.