分层射孔调剖技术在大庆油田采油六厂的应用

The Application of Zonal Perforating to Adjustment Injection Profile Technology in Oil Recover Plant No.6 of Daqing Oilfield

目前,常规的物理和化学调剖难以完全满足长井段、多层的调剖需要,因此展开了分层优化射孔参数调整注采剖面的研究。也就是在多层同时生产的情况下,通过调整射孔参数来调节各层的吸水量,使全井段注采剖面达到平衡,最终达到提高注水驱油采收率的目的。利用两相渗流理论及射孔损害与产能的关系建立了分层优化射孔参数调整注采剖面的数学模型。在模型建立的基础之上,编制了优化射孔参数的软件。利用射孔优化设计软件,针对不同地质条件和施工目的,开展不同形式的优化设计工作。优化设计结果在大庆油田采油六厂进行了应用试验,使用优化的参数射孔后吸水剖面明显趋于均衡,现场应用表明效果良好。

At present,regular physical and chemical profiles cannot fully satisfy long interval and multilayer profile needs,so we open up the study in zonal optimizing perforation parameters to adjust injection-production profile.Also is that when multilayer produce at the same time,the water absorption of each layer by adjusting perforation parameters can be regulated,then the injection-production profile in whole section can achieve balance,and finally improve water flooding oil recovery.According to the two-phase fluid flow theory and the relationship of perforating damages and productivity,the mathematical model for zonal optimizing perforation parameters are built up to adjust injection-production profile.Based on the model,draw up the software for optimizing perforation parameters.In view of the geological conditions and perforating purposes,various optimization designs have been conducted with the software.With the optimization design results,an application testing was made in Oil Recover Plant No.6 of Daqing Oilfield.After using the parameters optimization perforation the injection profile obviously tend to balance,and the on-site application results showed that the effect is well.