海上油田功能型聚合物调驱的实验研究

The experimental research of functional polymer flooding on offshore oilfield

渤海油田油层非均质性严重、油水流度差异大、吸水剖面不均衡,比较适宜采取深部调驱的方式来提高采收率。通过岩心模拟实验对一种新的功能型聚合物GN-1的黏度—浓度关系、流动性能进行了测定,对该聚合物的流体转向能力和调驱效果进行了评价,结果表明其具有良好的调驱能力。使用高浓度的普通聚合物0.1 PV+GN-1聚合物0.15PV组合驱替能有效的动用中低渗透层,大幅度提高采出程度。

Reservoirs in Bohai Bay Oilfield are non-homogenous, mobility contrast of oil and water is great and water injection profile is not balanced, so it is more appropriate to take deep profile control for EOR. Through core simulation experiment, relationship between viscosity and concentration of the new type of polymer GN-1 and mobile properties were determined, the capacity of fluid transfer and the effects of flooding were evaluated. High concentration polymer assembly could be used effective in low-permeability layers, and enhanced oil recovery greatly.