甜菜碱型疏水缔合胶凝剂的制备及其性能评价
Preparation and performance evaluation of betaine-type hydrophobic association gelling agent
陈介骄1
作者信息
- 1. 中国石化石油工程技术服务有限公司,北京 100020
- 折叠
摘要
当前在碳酸盐岩酸化压裂改造中应用的主要添加剂(胶凝剂)逐渐不能满足储层改造的需要.为此,文中以N-甲基牛黄酸钠、烯丙基氯、棕榈酰氯和三乙胺为原料,在二氯甲烷溶剂中,通过两步法制备出一种含磺酸根离子和季铵盐的甜菜碱型疏水单体(TSM-16);并以TSM-16和丙烯酰胺(AM)为原料,采用自由基水溶液聚合法合成了一种新型胶凝剂(PAT),且与常规胶凝剂(PAA)进行了综合性能对比.结果表明,相较于PAA,由于PAT具有疏水链段和两性离子基团,它在酸液中表现出更优异的酸稳定性、热稳定性、剪切稳定性和缓速性能,在酸化压裂领域中具有良好的应用前景.
Abstract
At present,the main additive(gelling agent)used in acid fracturing of carbonate rock is failing to meet the needs of reservoir stimulation.To address the problem,a betaine-type hydrophobic monomer TSM-16 containing sulfonate acid ion and quaternary ammonium salt was prepared in dichloromethane solvent by the two-step method using sodium N-methyltaurate,allyl chloride,palmitoyl chloride and triethylamine as raw materials.A new type of gelling agent PAT was synthesized from TSM-16 and acrylamide(AM)by free radical aqueous solution polymerization.The comprehensive properties of PAT were compared with those of the conventional gelling agent PAA.The results showed that compared with PAA,PAT showed better acid stability,thermal stability,shear stability and retardative property in acid solution due to its hydrophobic chain segment and zwitterionic groups,having a good application prospect in the field of acid fracturing.
关键词
甜菜碱型/疏水单体/胶凝剂/综合性能Key words
betaine-type/hydrophobic monomer/gelling agents/comprehensive properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据