Comparative experiment analysis of functional polymers flooding after polymer flooding

摘要

In view of a certain block of First Production Plant in Daqing Oilfield, this paper conducted physical simulation experiments of three hydrophobic associated polymers flooding which is in two conditions that equal concentration and equal viscosity after polymer flooding. As a result, injecting equals the multiples of pore volume under equal concentration. Enhanced recovery effect range: 20.73% of Huading I hydrophobic associated polymer flooding is the largest; 12.22% of Haibo BI hydrophobic associated polymer flooding is the most un-conspicuous. Injected equal the multiples of pore volume under equal viscosity. Enhanced recovery effect range : 20.73% of Huading I hydrophobic associated polymer flooding is the largest; 14.48% of Haibo BI hydrophobic associated polymer flooding is still the most un-conspicuous. Combined with the indoor experimental result, it can be seen that the poly table agent of Huading I is the best of the three kinds in driving the residual oil after polymer flooding, and its effect is the most obvious.