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Rapid and continuous polymer dissolution by rotating packed bed for enhanced oil recovery
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2020-05-24 , DOI: 10.1016/j.cep.2020.107952
Ya-Wei Fan , Kang-Xuan Liu , Liang-Liang Zhang , Hong Zhao , Bao-Chang Sun , Guang-Wen Chu , Jian-Feng Chen

Polymer flooding has been widely used for enhancing the on-shore oil recovery. However, this method is greatly restricted for offshore application because of the large space occupation and low polymer dissolution rate in traditional batch stirred tank reactor (STR). A rapid and continuous polymer dissolution approach via Higee intensification is firstly proposed. Study of this approach is investigated by partially hydrolyzed polyacrylamide (HPAM) dissolution testing in rotating packed bed (RPB). The effects of different operation parameters, including rotational speed, packing thickness, liquid flow rate and temperature of the dissolution performance are experimentally studied. The basic physical property, rheological property and stability testing results show that the quality of the as-obtained polymer solution is basically equivalent or slightly superior to that obtained by traditional STR method. The core flooding test of the polymer solution obtained by Higee technique exhibits nearly one percent higher improved oil recovery than that of the STR approach. Moreover, a 3-month pilot test (30 m3/h scale) of this Higee rapid polymer dissolution approach achieved 83.93 % space occupation reduction and 32.84 % power consumpation saving compared with the existing STR process. This method exhibits well prospect in polymer flooding for EOR, especially for offshore applications.



中文翻译:

通过旋转填充床快速连续地溶解聚合物,以提高采油率

聚合物驱已被广泛用于增强陆上石油采收率。然而,由于传统的间歇式搅拌釜反应器(STR)中的空间占用大且聚合物溶解速率低,该方法在海上应用中受到很大限制。首先提出了通过Higee强化的快速连续的聚合物溶解方法。通过在旋转填充床(RPB)中进行部分水解的聚丙烯酰胺(HPAM)溶解测试研究了这种方法的研究。实验研究了不同操作参数的影响,包括转速,填料厚度,液体流速和温度对溶解性能的影响。基本物性 流变性能和稳定性测试结果表明,所制得的聚合物溶液的质量与传统的STR方法获得的质量基本相当或稍好。通过Higee技术获得的聚合物溶液的岩心驱油测试显示,与STR方法相比,采油率提高了近1%。此外,进行了3​​个月的先导测试(30 m与现有的STR工艺相比,这种Higee快速聚合物溶解方法(3 / h规模)实现了83.93%的空间占用减少和32.84%的功耗节省。该方法在EOR(尤其是海上应用)的聚合物驱中显示出良好的前景。

更新日期:2020-05-24
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