油气地质与采收率2012，Vol.19Issue(3)：71-73,3.
聚合物驱多段塞交替注入方式及现场应用
Multi-slug alternative injection method and field application of polymer flooding
摘要
Abstract
At present, the producing degree of low permeability layers is low, some polymer flooding blocks are injected abundant- ly and the amount of polymer dry chemical is high. In view of these questions, the effect of polymer flooding can be further improved through the method of multi-slug alternative injection, which can improve the benefit of the polymer flooding. Applying the physical simulation experiment methods, polymer slug with different viscosity can be alternatively injected in turn for anisotropic layer, which can reduce the mobility contrast of displacing agent of high permeability layers and low permeability layers and polymer slug of them can synchronously move. The experiment results show that the oil displacement program of reasonable multi-slug alternative injection can improve the oil recovery more than 2% compared to single slug injection and the amount of polymer dry chemical can be saved by about 25%. After field application, it can control the rising rate of water cut, the composite water cut is dropped by 0.8% , increasing oil production of 1.4x10 t and saving polymer dry chemical by 18.6% , thus it can prove that the multi-slug alternative injection is an effective action to improve the polymer flooding efficiency and decrease the amount of polymer.关键词
聚合物驱/交替注入/非均质油层/采收率/大庆油区Key words
polymer flooding/ alternative injection/ anisotropic layer/ recovery efficiency/ field application分类
能源科技引用本文复制引用
曹瑞波,王晓玲,韩培慧,路克微..聚合物驱多段塞交替注入方式及现场应用[J].油气地质与采收率,2012,19(3):71-73,3.基金项目
国家科技重大专项“大型油气田及煤层气开发”(2008ZX05010). （2008ZX05010）
