AM/AMPS/SSS三元共聚物的制备及耐温耐盐性能

doi:10.11949/0438-1157.20221020

摘要/Abstract

摘要：

我国油田已全面进入三次采油阶段，研制适应高温高盐开采环境下的驱油剂受到广泛关注。针对传统聚丙烯酰胺类驱油剂进行了改性，采用水溶液聚合的方法，制备并优化了丙烯酰胺/2-丙烯酰胺基-2-甲基-1-丙烷磺酸/对苯乙烯磺酸钠（AM/AMPS/SSS）三元共聚物，探究了各种反应条件对产物水溶液表观黏度的影响，总结分析了相关规律，得到最优的共聚物制备条件。使用旋转黏度计，对聚合物溶液的表观黏度、耐温耐盐性能进行了研究，最终得到了耐温、耐盐效果明显，热稳定性良好的AM/AMPS/SSS三元共聚物，在目前严峻的原油开采环境中有较好的应用前景。

关键词: 聚合物, 制备, 黏度, 聚丙烯酰胺, 多元共聚, 耐温耐盐性能

Abstract:

China's oil fields have entered the stage of tertiary oil recovery. The development of oil displacement agents adapted to high temperature and high salt production environment has attracted extensive attention. In this paper, polyacrylamide, a traditional oil displacement agent, was modified, and acrylamide / 2-acrylamyl-2-methyl-1-propane sulfonic acid / sodium p-styrene sulfonate (AM/AMPS/SSS) terpolymer was prepared and optimized using aqueous solution polymerization. The effects of various reaction conditions on the apparent viscosity of the product aqueous solution were explored, and the optimum preparation conditions of terpolymer were obtained. The apparent viscosity, heat and salt resistance of terpolymer solution were studied by using rotary viscosimeter. Finally, AM/AMPS/SSS terpolymer with obvious heat and salt resistance and good thermal stability was obtained, which has a good application prospect in the current severe crude oil exploitation environment.

Key words: polymers, preparation, viscosity, polyacrylamide, multiple copolymerization, heat and salt resistance

中图分类号:

TQ 316.3

靳志远, 单国荣, 潘鹏举. AM/AMPS/SSS三元共聚物的制备及耐温耐盐性能[J]. 化工学报, 2023, 74(2): 916-923.

Zhiyuan JIN, Guorong SHAN, Pengju PAN. Preparation and heat and salt resistance of AM/AMPS/SSS terpolymer[J]. CIESC Journal, 2023, 74(2): 916-923.

图/表 10

表1 初始反应条件

Table 1 Initial reaction conditions

Initiator concentration	Monomer mass ratio (AM∶AMPS∶SSS)	Monomer concentration	System pH	Polymerization temperature
0.2%(mass)	4∶1∶0.1	20%(mass)	7	40℃

图1 引发剂浓度对产物水溶液表观黏度的影响

Fig.1 Effect of initiator concentration on apparent viscosity of product aqueous solution

图2 AMPS配比对产物水溶液表观黏度的影响

Fig.2 Effect of AMPS ratio on apparent viscosity of product aqueous solution

图3 SSS添加量对产物水溶液表观黏度的影响

Fig.3 Effect of SSS addition on apparent viscosity of product aqueous solution

图4 单体浓度对产物水溶液表观黏度的影响

Fig.4 Effect of monomer concentration on apparent viscosity of product aqueous solution

图5 pH对产物水溶液表观黏度的影响

Fig.5 Effect of pH on apparent viscosity of product aqueous solution

图6 聚合温度对产物水溶液表观黏度的影响

Fig.6 Effect of polymerization temperature on apparent viscosity of product aqueous solution

图7 单体转化率和表观黏度的关系

Fig. 7 Relationship between monomer conversion and apparent viscosity

图8 温度对3种聚合物水溶液表观黏度的影响

Fig.8 Effect of temperature on apparent viscosity of three polymer aqueous solutions

图9 盐浓度对3种聚合物溶液表观黏度的影响

Fig.9 Effect of salt concentration on apparent viscosity of three polymer solutions

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