CMC类聚合物在钻井液中的热稳定性  

Thermal stability of CMC in drilling fluid

作　　者：王友绍[1] 韩书华[1] 孙德军[1] 张春光[1] 王果庭[1] 

机构地区：[1]山东大学胶体与界面化学研究所

出　　处：《钻井液与完井液》1997年第4期14-16,共3页Drilling Fluid & Completion Fluid

摘　　要：用动力学方法分析了LV-CMC和MV-CMC在钻井液中的降解机理。试验结果表明,这两种聚合物的降解均为一级动力学降解,降解机理同分子主链的结构密切相关,LV-CMC比MV-CMC的耐温性更强;降解的半衰期与老化温度呈指数关系,用半衰期为16h来评价,LV-CMC和MV-CMC在钻井液中最高失效温度分别为131℃和132℃。在老化时间不超过4h、老化温度低于180℃的条件下,这两种聚合物可在淡水钻井液中任意使用。The degradation mechanisms of LV-CMC and MV-CMC in drilling fluid are analyzed by dynamic method. Tests indicate that the degradation of these two CMC are primary dynamic degradation, thermal stability of LV-CMC are better than that of MV-CMC. There is exponential relation between half life period and ageing temperature. The temperature tolerance of LV-CMC and MV-CMC are 131℃ and 132℃ respectively when the half life period is 16 hours.

关 键 词：降滤失剂 水基 钻井液 热稳定性 石油 

分 类 号：TE254.4[石油与天然气工程—油气井工程]