缔合聚合物在串联岩芯中的阻力系数和残余阻力系数研究

Study of the Coefficient of Resistance and Residual Resistance Factor of Hydrophobically Associating Polymer in Series Core

使用海洋油田产出污水配制疏水缔合聚合物溶液在串联岩芯上进行阻力系数(RF)和残余阻力系数(RRF)的测定。实验结果表明,串联岩芯中的各段岩芯都在实验中表现出了压差变化快慢不一致的现象,并且阻力系数和残余阻力系数呈现一种下降的趋势,但三段串联岩芯依然获得了较高的阻力系数(>21)和残余阻力系数(>2.1)。通过串联岩芯实验,验证了缔合聚合物溶液在存在层内差异的多段岩心中流动时,能够保持很高的阻力系数和残余阻力系数,这也为验证缔合聚合物驱油有效性提供了强有力的证据。

The RF and RRF are investigated in laboratory by the solution of sewage of the offshore oilfield. The result of experiment indicates that the changing rate of pressure is variance in the three cores. At the same time, there is a descend trend in series core. But three rocks acquire a high coefficient of resistance （〉21） and residual resistance factor （〉2.1）. The experiment result in series core validates that Hydrophobically Associating Polymer can acquire high coefficient of resistance and high residual resistance factor in series core which exist layer difference. In addition, that experiment result provides a good proof which displacing efficiency Of Hydrophobically Associating Polymer.