摘要
以乙烯、乙酸、甲醇和磺化剂为主要原料,通过高温氧化、酯化、聚合、醇解及磺化合成了一种新型抗高温能形成致密隔离膜的降滤失剂CMJ-1。优选出了产品的最佳磺化度,经红外光谱确认了该聚合物的基本结构,通过冷冻扫描电镜(SEM)分析,证实了CMJ-1在钻井液中能够形成致密的隔离膜,并对其成膜降滤失机理做了初步探讨。评价了它在淡水钻井液、1%和4%盐水钻井液、MMH正电胶钻井液和无机硅酸盐钻井液中的降滤失效果。实验结果表明:CMJ-1可以用作水基钻井液降滤失剂,抗温达180°C,在淡水钻井液中的最佳加量为1.0%;CMJ-1在1%和4%的盐水钻井液中也具有良好的降滤失效果,其最佳加量为2.0%;CMJ-1可用于正电胶、硅酸盐等各种水基钻井液,并与其它各种处理剂配伍性较好。
The synthesized sulfide polymer CMJ-1 is a novel the rmally resistant and film-forming filtrate loss controller. And the agent is e va luated in laboratory. According to the conclusion, its optimum adding amount is 1.0%; The additive shows very effective thermal stability and can be still filtr ation loss controller in 180(°C.) Besides, the CMJ-1 is tolerant to Na^+ up to 4%. In addition, it shows favorable capability in drilling fluids system of MMH and silicate. When the CMJ-1 is added into MMH drilling fluids system, the integra l thermal stability can be improved distinctly, moreover, the special capability of MMH drilling fluids system is given attention to, which avoids accidents in complex oil wells; Similarly, in silicate drilling fluids system,CMJ-1 shows it s particular performance. In addition, it can form membrane on the filter cakes by SEM. Finally, the mechanism of its film forming and filtration loss controll ing is discussed.
出处
《石油钻探技术》
CAS
2004年第2期30-32,共3页
Petroleum Drilling Techniques
关键词
降滤失剂
井眼稳定
钻井液
乙烯
乙酸
甲醇
磺化剂
filtrate reducer
salt tolerant property
hole stabilization
filtrateloss
drilling fluid property
