摘要
以9-烯十八酸甲酯和羟乙基乙二胺为原料,采用酰胺化反应合成了可逆转油基钻井液用乳化剂SHOE-I。对反应温度、反应时间、催化剂用量等反应条件进行了优化,得到了较佳的合成条件:反应时间为6h、反应温度为135℃、催化剂用量1.5%。在碱性条件下,乳化剂SHOE-I用量为4%的白油体系中,以油水比60∶40制成油包水油基钻井液体系,破乳电压达到758V,具有良好的乳液稳定性;而在酸性条件下,该体系破乳电压降为5V,转变为水包油体系,具有优良的可逆转性能。
The emulsifier for reversible oil based drilling fluid SHOE-I was prepared from 9-octadecenoic acid methyl ester and N-（2-hydroxyethyl）ethylenediamine via amidation reaction. The effects of reaction temperature, reaction time and amount of catalyst were studied. The results showed the optimal reaction conditions were： reaction time 6h, reaction temperature 135℃ and amount of catalyst 1.5%. The perform- ance of SHOE-I was also evaluated. The results showed that when the mass ratio of 5 # mineral oil to water was 60 ： 40, the addition of 4% SHOE-I gave good emulsion stability in basic condition and the emulsion- breaking voltage was higher than 758V. In acidic condition, the water-in-oil emulsion could change into oil-in-water emulsion, and the emulsion-breaking voltage dropped down to 5V which demonstrated good reversible performance.
出处
《化学世界》
CAS
CSCD
2015年第4期240-244,共5页
Chemical World
关键词
可逆转
油基钻井液
乳化剂
破乳电压
reversible
oil based drilling fluid
emulsifier
emulsion-breaking voltage
