多级模糊综合评判方法在渤海油田聚合物优选中的应用

Application of Multi-Level Fuzzy Comprehensive Evaluation Method to Polymer Optimization in Bohai Oilfield

聚合物驱是提高非均质油藏采收率的有效方法,聚合物选择是否合理直接关系到聚合物驱的增油效果,针对地质油藏实际,进行了聚合物溶液增黏性、稳定性、耐温性、抗盐性、抗剪切性、滞留和吸附特性等技术指标的检测,并根据不同类别的评价指标,运用多级模糊综合评判方法进行聚合物性能相对优劣的定量评判。结果表明,多级模糊综合评判方法可以实现不同类别指标的评判,在进行评价的"北京恒聚"、"西南缔合"和"法国SNF"三种聚合物中,"西南缔合"聚合物总体占优。

Polymer flooding is an effective method for improving the recovery efficiency in heterogeneous reservoir. Polymer selec tion is related to increasing oil production during polymer flooding. In this article, on the basis of the actual geological reservoir con ditions, a series of testing has been conducted for polymer solution to increase the viscosity of polymer, stability, temperature toler ance, salt resisting capability, antishearing capability, detention and adsorption characteristics. Under different category of evaluation indicators, with multilevel fuzzy integrated evaluation method, quantitative evaluation has been conducted on polymer performance. The study results indicate that multilevel fuzzy comprehensive evaluation method can be used for different category indicators of evaluation. Among three kinds of evaluated polymers ＂Beijing constant poly＂, ＂Southwest Associationin＂ and ＂France SNF＂ Poly mer ＂Southwest Associationin＂ is much better.