大庆油田二类油层聚合物驱分注工艺对比评价

Comparative Evaluation on Separate Layer Injection Polymer Flooding Technology for Ⅱ Kind Formation of Daqing Oilfield

随着大庆油田二类油层聚合物驱开发的不断深入,分注层段逐渐增多,形成了改进型梭形杆、梭形杆及流线型环形降压槽3种分注工艺。为形成统一标准,便于油田管理,从数值模拟分析、室内投捞成功率、水力特性对比试验3个方面对上述3种分注工艺进行了对比评价,流线型环形降压槽式聚驱分注工艺的综合性能最优。该工艺将成为大庆油田聚驱分注的主导技术,为提高二类油层动用程度提供强有力的技术支撑。

With the development of polymer flooding for the II formation of Daqing Oilfield and the increases of single well layer, the form of development improved spindle rod, spindle rod and stre- amlined annular groove buck three separate injection technology. For the formation of a unified standard for management of Oilfield, to carry out a comparative evaluation of three above-men- tioned separate layer injection technology from the numerical simulation analysis, indoor throwing success rate and the contrast test of hydraulic characteristics, the result shows that streamlined annular groove buck has the optimal comprehensive performance of the separate layer injection polymer flooding technology. This technology will become the dominant technology of Polymer Flooding injection of Daqing Oilfield,to provide powerful technical support for improving the re- covery of II Kind Formation.