【摘要】 研究了疏水缔合型聚丙烯酰胺(固体粉末)在盐水中的溶解行为。在聚合物浓度高于3 500mg/L和温度大于37℃的条件下,这种聚合物表现出良好的溶解性;溶解了的高浓度溶液可以稀释为均匀的低浓度溶液(如1 750mg/L),但这种低浓度溶液不能通过溶解直接得到。这种溶解过程已在海上油田聚合物驱矿场试验中得以应用。确定了所研究疏水缔合聚合物溶解的浓度、温度范围,考察了温度对其流变行为的影响,以及溶液矿化度对其溶解速度的影响。更多还原

【Abstract】 The solubility of hydrophobic associated polyacrylamide in powder was studied in brine.This type of polymer could dissolve well when its concentration is over 3500 mg/L and temperature over 37℃,and the produced solution with a high polymer concentration could be diluted to be a type of uniform solution with a low concentration(for example,1750 mg/L).This kind of low-concentration solution,however,can not be obtained by direct dissolution.This indirect preparation process of polymer solution has been applied in some field pilot projects of polymer flooding in offshore oilfields,during which the ranges of concentration and temperature were determined for the studied hydrophobic associated polymer,and the impact of temperature on the solution rheology and the impact of salinity on the dissolution rate were probed.更多还原