油田聚合物溶液黏度的影响因素研究  

Study on the Factors Affecting the Viscosity of the Mother Liquid in the Oilfield

作　　者：孙恩呈[1,2] 李乾 牛余海 刘晓 张彦博[1] Sun Encheng;Li Qian;Niu Yuhai;Liu Xiao;Zhang Yanbo(Technical Testing Center of Sinopec Shengli Oilfield Branch,Dongying 257000,China;Shengli Oilfield Testing and Evaluation Research Co.,Ltd.,Dongying 257000,China)

机构地区：[1]中国石化胜利油田分公司技术检测中心,山东东营257000 [2]胜利油田检测评价研究有限公司,山东东营257000

出　　处：《山东化工》2023年第18期53-55,共3页Shandong Chemical Industry

摘　　要：为降低离子对聚合物溶液黏度的影响,研究了K^(+)、Na^(+)、Ca^(2+)、Mg^(2+)、Fe^(2+)、Fe^(3+)、S^(2-)离子溶液对聚合物黏度的影响规律。研究表明,二价阳离子的影响比一价阳离子的影响大,阳离子中Fe^(2+)的影响最大,阴离子中S^(2-)的影响最大。随着阳离子K^(+)、Na^(+)、Ca^(2+)、Mg^(2+)浓度增加聚合物溶液黏度降低,当K^(+)、Na^(+)、Ca^(2+)、Mg^(2+)离子质量浓度分别为40,1 000,60,50 mg/L时对母液黏度稳定性影响最大,此时1 500 mg/L聚合物溶液黏度降到110 mP·s。因此,对于油田选用配聚用水时,需要严格控制Fe^(2+)和S^(2-)的出现并保证K^(+)、Na^(+)、Ca^(2+)、Mg^(2+)质量浓度分别小于40,1 000,60,50 mg/L。To reduce the influence of ions on the viscosity of polymer solutions,the effects of K^(+),Na^(+),Ca^(2+),Mg^(2+),Fe^(2+),Fe^(3+),S^(2-)ion solutions on the viscosity of polymers were studied.Research has shown that the influence of divalent cations is greater than that of monovalent cations,with Fe^(2+)in cations having the greatest impact and S^(2-)in anions having the greatest impact.As the concentration of cations K^(+),Na^(+),Ca^(2+),and Mg^(2+)increases,the viscosity of the polymer solution decreases.When the concentrations of K^(+),Na^(+),Ca^(2+)and Mg 2+ions are 40,1000,60 and 50 mg/L,respectively,the maximum impact on the viscosity stability of the mother liquor is observed.At this point,the viscosity of the 1500 mg/L polymer solution decreases to 110 mP·s.Therefore,when selecting polymer water for oil fields,it is necessary to strictly control the occurrence of Fe^(2+)and S^(2-)and ensure that the concentrations of K^(+),Na^(+),Ca^(2+),and Mg^(2+)are less than 40,1000,60 and 50 mg/L,respectively.

关 键 词：影响因素 黏度 聚合物 油田 

分 类 号：TE39[石油与天然气工程—油气田开发工程]