摘要
实验测试了疏水缔合两性聚合物NAPs水溶液在大庆油层条件下通过孔隙介质渗流时的阻力系数、残余阻力系数和有效粘度 ,并与大庆自产聚合物HPAM的相应值进行了比较。实验结果表明 ,在大庆油层条件下 ,NAPs水溶液的有效粘度比HPAM的大 2 2 .3%— 38.7%。聚合物驱过程中有效粘度的最佳发挥 ,对提高采收率具有十分重要的意义。有效粘度不仅取决于聚合物浓度和孔隙结构性质 ,而且取决于聚合物分子结构特性 。
The flow properties of aqueous solutions of an amphoteric hydrophobically associating polymer, NAPs, in produced water( TSD =4 000 ppm) through reservoir cores from Daqing at 45℃(typical temperature in reservoir strata at Daqing) are investigated in comparision with that of a commercial polymer HPAM and the values of their effective viscosity, μ ef , resistance and residual resistance factors, F R and F RR , are determined from the experimental data obtained by using Darcy's equation. It is shown that the μ ef values for NAPs are larger by 22.3—38.7% than that for HPAM; the increase in μ ef owing to increase in polymer concentration(from 700 to 1 000 ppm) is higher for NAPs than that for HPAM. These phenonema are explained by the effect of hydrophobical association of NAPs molecules in aqueous solution.
出处
《油田化学》
CAS
CSCD
北大核心
2001年第2期152-154,共3页
Oilfield Chemistry
关键词
疏水缔合聚合物
两性聚合物
水溶液
渗流
有效粘度
驱油聚合物
大庆油田
Hydrophobically Associative Polymer
Amphoteric Polymer
Aqueous Solution
Flow through Porous Media
Effective Viscosity
Polymer for EOR
Daqing Oil Fields
