摘要
采用接枝共聚方法在淀粉链状结构上引入丙烯酰胺和丙磺酸单体,优化其反应工艺,得到改性淀粉;用热重法分析产物热稳定性能;通过淡水实验、抗高温实验、抗盐实验和抗钙实验评价改性淀粉的降滤失性能。结果表明:改性淀粉在280℃时开始分解;当改性淀粉添加量为1.3%时降滤失性能良好;改性淀粉是一种热稳定性较好、抗盐抗钙能力较强、同时兼有无毒环保、成本低等优点的降滤失剂原料。
The AM monomer and AMPS monomer were introduced to the starch s chain structure by graft copolymerization.The modified starch was obtained after drying.The product s heat stability was investigated by TG-DTA.On the basis of evaluation criterion for the fluid loss reducer,the filtration loss property of modified starch was evaluated by the freshwater experiment,heat resistant experiment,salt resistant experiment and calcium resistant experiment.The results show that the fluid loss reducer decomposes at 280 ℃.The fluid loss reducer has good filtration property when its weight percent is 1.3%.The fluid loss reducer has heat stability,salt resistant and calcium resistant capability.The modified starch is one of environment friendly drilling fluid additives.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第1期151-154,共4页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家自然科学基金项目(200906005)
国家科技重大专项课题(2008ZX05024-04-005
2008ZX05036-003
2008ZX05062)
关键词
钻井液
抗温
降滤失剂
改性淀粉
drilling fluid
heat resistant
fluid loss reducer
modified starch
