溶解氧及除氧剂对聚合物溶液黏度和长期热稳定性的影响
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摘要
在聚合物溶液配制过程中,溶解氧是导致聚合物溶液化学降解、溶液黏度和长期热稳定性下降最重要的因素之一。以具有抽真空、充氮气功能的手套箱作为实验主体,搭建了一种新的溶解氧浓度控制实验装置,利用该装置研究了溶解氧及除氧剂对聚合物溶液熟化阶段的黏度和长期热稳定性的影响。实验结果表明:无还原性物质存在(即Fe~(2+)质量浓度为0)的条件下,溶解氧浓度对聚合物溶液的溶胀-溶解过程无明显影响,溶液黏度无明显下降趋势;还原性物质存在(即Fe~(2+)质量浓度为2.5 mg/L)的条件下,当溶解氧浓度极低(即0.05～0.1 mg/L)时,溶液黏度短时间内没有明显下降趋势;随着溶解氧浓度逐渐升高,溶解氧对聚合物溶液黏度的影响变得更为复杂。在还原性物质存在的条件下,喹啉化合物类除氧剂MO-1和胺类除氧剂MO-2的浓度为150 mg/L、温度为60℃时,聚合物溶液长期热稳定性得到有效提高,溶液黏度保留率可超过100%。
In the process of polymer solution preparation,dissolved oxygen is one of the most important factors that lead to the chemical degradation of polymer solution and the decrease of viscosity and long-term heat stability of the solution. A new experimental device for controlling the concentration of dissolved oxygen is set up by using the glove box with the function of vacuuming and nitrogen filling as an experimental subject. Based on the device,the effect of dissolved oxygen and deoxidants on the viscosity and long-term heat stability at the ripening stage of polymer solution is studied. The experimental results show that without reducing substances(i.e.,the mass concentration of Fe~(2+)is 0 mg/L),the concentration of dissolved oxygen has no significant impact on the swelling-dissolution process of polymer solution, and the viscosity has no significant downward trend. In the presence of reducing substances(i.e., the mass concentration of Fe~(2+)is 2.5 mg/L), when the dissolved oxygen concentration is extremely low(0.05-0.1 mg/L), the viscosity of the solution in a short time is not significantly decreased. With the increase of dissolved oxygen concentration,the effect of dissolved oxygen on the viscosity of polymer solution becomes more complex. In the presence of reducing substances, when the quinoline compound deoxidant MO-1 and the amine deoxidant MO-2 at the concentration of 150mg/L and the temperature of 60 ℃,the long-term thermal stability of polymer solution can be effectively improved,and the viscosity retention rate of solution is over 100%.
In the process of polymer solution preparation,dissolved oxygen is one of the most important factors that lead to the chemical degradation of polymer solution and the decrease of viscosity and long-term heat stability of the solution. A new experimental device for controlling the concentration of dissolved oxygen is set up by using the glove box with the function of vacuuming and nitrogen filling as an experimental subject. Based on the device,the effect of dissolved oxygen and deoxidants on the viscosity and long-term heat stability at the ripening stage of polymer solution is studied. The experimental results show that without reducing substances(i.e.,the mass concentration of Fe~(2+)is 0 mg/L),the concentration of dissolved oxygen has no significant impact on the swelling-dissolution process of polymer solution, and the viscosity has no significant downward trend. In the presence of reducing substances(i.e., the mass concentration of Fe~(2+)is 2.5 mg/L), when the dissolved oxygen concentration is extremely low(0.05-0.1 mg/L), the viscosity of the solution in a short time is not significantly decreased. With the increase of dissolved oxygen concentration,the effect of dissolved oxygen on the viscosity of polymer solution becomes more complex. In the presence of reducing substances, when the quinoline compound deoxidant MO-1 and the amine deoxidant MO-2 at the concentration of 150mg/L and the temperature of 60 ℃,the long-term thermal stability of polymer solution can be effectively improved,and the viscosity retention rate of solution is over 100%.
引文
[1]邵振波,周吉生,孙刚,等.部分水解聚丙烯酰胺驱油过程中机械降解研究:分子量、黏度及相关参数的变化[J].油田化学,2005,22(1):72-77.SHAO Zhenbo,ZHOU Jisheng,SUN Gang,et al.Studies on mechanical degradation of partially hydrolized polyacrylamide in course of polymer flooding:changes in relative molecular mass,viscosity and related parameters[J].Oilfield Chemistry,2005,22(1):72-77.
[2]卢大艳,白俊,唐劲松.渤海湾注聚油田聚合物降解和保粘工艺[J].石油化工应用,2015,34(9):71-75.LU Dayan,BAI Jun,TANG Jinsong.Polymer degradation and viscosity retention process in Bohai polymer injection oilfield[J].Petrochemical Industry Application,2015,34(9):71-75.
[3]王翠丽.矿场聚合物溶液黏度影响因素分析[J].中国石油和化工标准与质量,2012,32(增刊1):138-139.WANG Cuili.Analysis of effect factors on viscosity of polymer solution in oilfield[J].China Petroleum and Chemical Standard and Quality,2012,32(S1):138-139.
[4]刘振国,方健.曹妃甸油田注入除氧剂BHO-04的研制与国产化[J].工业水处理,2013,33(1):72-74.LIU Zhenguo,FANG Jian.Preparation and domestic manufacture of injection oxygen scavenger BHO-04 for Caofeidian Oilfield[J].Industrial Water Treatment,2013,33(1):72-74.
[5]张磊.驱油聚合物的降解与稳定性研究[D].济南:山东大学,2011.ZHANG Lei.Study on the degradation and stability of flooding polymer[D].Jinan:Shandong University,2011.
[6]陈明强,孙志强,王江顺,等.配注过程中聚合物溶液的黏度损失分析[J].西安石油大学学报(自然科学版),2007(3):60-63.CHEN Mingqiang,SUN Zhiqiang,WANG Jiangshun,et al.Analysis of the viscosity loss of polymer solution in the process of injection and allocation[J].Journal of Xi'an Shiyou University(Natural Science Edition),2007(3):60-63.
[7]刘敏,邹明华,吴华晓,等.海上油田聚合物驱平台配注工艺技术[J].中国海上油气,2010,22(4):259-261.LIU Min,ZOU Minghua,WU Huaxiao,et al.Injection distribution technique on platform for offshore polymer flooding[J].China Offshore Oil and Gas,2010,22(4):259-261.
[8]赵方园,姚峰,王晓春,等.新型表面活性聚合物驱油剂室内性能研究[J].石油化工,2017,46(8):1043-1048.ZHAO Fangyuan,YAO Feng,WANG Xiaochun,et al.Laboratory study on properties of novel surface active polymer flooding agent[J].Petrochemical Technology,2017,46(8):1043-1048.
[9]常胜龙.还原性物质及溶解氧对聚合物溶液性能影响研究[D].大庆:东北石油大学,2014.CHANG Shenglong.The research on the effect of reducing substances and dissolving oxygen on the properties of polymer solution[D].Daqing:Northeast Petroleum University,2014.
[10]钟会影,张伟东,刘义坤,等.粘弹性聚合物驱普通稠油微观渗流数学模型[J].地球科学,2017,42(8):1364-1372.ZHONG Huiying,ZHANG Weidong,LIU Yikun,et al.Normal neavy oil micro seepage mathematical model with viscoelastic ploymer flooding[J].Earth Science,2017,42(8):1364-1372.
[11]邹明华,刘敏,王瑶,等.渤海油田聚合物驱配注工艺及系统的改进与应用[J].中国海上油气,2013,25(3):57-60.ZOU Minghua,LIU Min,WANG Yao,et al.Improvement and application of the solution preparation and injection technology and system for polymer flooding in Bohai Oilfield[J].China Offshore Oil and Gas,2013,25(3):57-60.
[2]卢大艳,白俊,唐劲松.渤海湾注聚油田聚合物降解和保粘工艺[J].石油化工应用,2015,34(9):71-75.LU Dayan,BAI Jun,TANG Jinsong.Polymer degradation and viscosity retention process in Bohai polymer injection oilfield[J].Petrochemical Industry Application,2015,34(9):71-75.
[3]王翠丽.矿场聚合物溶液黏度影响因素分析[J].中国石油和化工标准与质量,2012,32(增刊1):138-139.WANG Cuili.Analysis of effect factors on viscosity of polymer solution in oilfield[J].China Petroleum and Chemical Standard and Quality,2012,32(S1):138-139.
[4]刘振国,方健.曹妃甸油田注入除氧剂BHO-04的研制与国产化[J].工业水处理,2013,33(1):72-74.LIU Zhenguo,FANG Jian.Preparation and domestic manufacture of injection oxygen scavenger BHO-04 for Caofeidian Oilfield[J].Industrial Water Treatment,2013,33(1):72-74.
[5]张磊.驱油聚合物的降解与稳定性研究[D].济南:山东大学,2011.ZHANG Lei.Study on the degradation and stability of flooding polymer[D].Jinan:Shandong University,2011.
[6]陈明强,孙志强,王江顺,等.配注过程中聚合物溶液的黏度损失分析[J].西安石油大学学报(自然科学版),2007(3):60-63.CHEN Mingqiang,SUN Zhiqiang,WANG Jiangshun,et al.Analysis of the viscosity loss of polymer solution in the process of injection and allocation[J].Journal of Xi'an Shiyou University(Natural Science Edition),2007(3):60-63.
[7]刘敏,邹明华,吴华晓,等.海上油田聚合物驱平台配注工艺技术[J].中国海上油气,2010,22(4):259-261.LIU Min,ZOU Minghua,WU Huaxiao,et al.Injection distribution technique on platform for offshore polymer flooding[J].China Offshore Oil and Gas,2010,22(4):259-261.
[8]赵方园,姚峰,王晓春,等.新型表面活性聚合物驱油剂室内性能研究[J].石油化工,2017,46(8):1043-1048.ZHAO Fangyuan,YAO Feng,WANG Xiaochun,et al.Laboratory study on properties of novel surface active polymer flooding agent[J].Petrochemical Technology,2017,46(8):1043-1048.
[9]常胜龙.还原性物质及溶解氧对聚合物溶液性能影响研究[D].大庆:东北石油大学,2014.CHANG Shenglong.The research on the effect of reducing substances and dissolving oxygen on the properties of polymer solution[D].Daqing:Northeast Petroleum University,2014.
[10]钟会影,张伟东,刘义坤,等.粘弹性聚合物驱普通稠油微观渗流数学模型[J].地球科学,2017,42(8):1364-1372.ZHONG Huiying,ZHANG Weidong,LIU Yikun,et al.Normal neavy oil micro seepage mathematical model with viscoelastic ploymer flooding[J].Earth Science,2017,42(8):1364-1372.
[11]邹明华,刘敏,王瑶,等.渤海油田聚合物驱配注工艺及系统的改进与应用[J].中国海上油气,2013,25(3):57-60.ZOU Minghua,LIU Min,WANG Yao,et al.Improvement and application of the solution preparation and injection technology and system for polymer flooding in Bohai Oilfield[J].China Offshore Oil and Gas,2013,25(3):57-60.