NaAMC_(16)S/AM/AA三元共聚物的合成及其溶液性能研究  

Synthesis and Solution Properties of NaAMC_(16)S/AM/AA Terpolymer

作　　者：王凤[1] 王超[1] 朱卓岩[1] 欧阳坚[1] 陈国浩[1] 王源源[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083

出　　处：《油田化学》2015年第3期366-369,共4页Oilfield Chemistry

基　　金：国家重大科技专项"三次采油提高采收率技术研究"(项目编号2011B-1301)

摘　　要：以丙烯酰胺、丙烯酸和2-丙烯酰胺基十六烷基磺酸钠（NaAMC16S）为原料,制备了ZS-1、ZS-2、ZS-3（NaAMC16S单体加量分别为1%、2%、3%）三元共聚物,利用元素分析仪确定了共聚物的组成,考察了共聚物分子量、黏性、抗盐性、抗剪切性及注入性。实验测得ZS-1、ZS-2、ZS-3的相对分子质量分别为1661×10^4、921×10^4、523×10^4。元素分析结果表明,据S元素的含量计算共聚物的组成,ZS-1、ZS-2、ZS-3中分别含有0.998%、1.488%、1.973%NaAMC16S。随NaAMC16S含量的增大,共聚物分子量降低,黏度增加,抗盐性和抗剪切性提高。室温下经毛细管剪切后,ZS-1、ZS-2、ZS-3的黏度保留率分别为84.1%、87.6%、89.4%。岩心实验表明,ZS-3的注入性良好,并且0.9g/L ZS-3溶液与1.8g/L部分水解聚丙烯胺（相对分子质量1600×10^4）的采收率相当,分别为22.48%和22.67%,可降低聚合物驱费用。Terpolymers ZS-1,ZS-2,ZS-3 were synthesized using acrylamide,acrylic and 1%,2%,3%2-acrylamide hexadecyl sulfonate（NaAMC16S） respectively.The composition of terpolymer was determined by elemental analyzer.The relative molecular mass,viscosity,salt resistance,shear resistance and injectivity were tested.The results showed that the relative molecular mass of ZS-1,ZS-2 and ZS-3 was 1661×10^4,921×10^4 and 523×10^4 respectively.Elemental analysis results indicated that ZS-1,ZS-2 and ZS-3 contained 0.998%,1.488%,1.973%NaAMC16S separately,according to the content of element S.With increasing content of NaAMC16S,the relative molecular mass of terpolymer decreased,viscosity increased,salt resistance and shear resistance enhanced.After capillary shearing at room temperature,the viscosity retention rate of ZS-1,ZS-2 and ZS-3 was 84.1%,87.6%and89.4%.Core flooding tests results showed that the injectivity of ZS-3 was good.Comparing to 1.8 g/L partially hydrolyzed polyacrylamide solution with relative molecular mass 1600×10^4,0.9 g/L ZS-3 displacing fluid could get similar recovery ratio（22.48%）,which could reduce the cost of polymer flooding.

关 键 词：三元共聚物 性能评价 采收率 中低渗油藏 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]