抗高温抗海水降滤失剂的研究与性能评价  

Study and Evaluation of a High Temperature Seawater Filtration Reducer

作　　者：王仲广[1] 唐红霞[2] 王涛[1] 卓绿燕[2] 

机构地区：[1]中海油能源发展股份有限公司采油技术服务公司 [2]大港油田化学有限责任公司

出　　处：《钻井液与完井液》2010年第2期14-15,19,共3页Drilling Fluid & Completion Fluid

摘　　要：以AA、AM、AMPS、DMDAAC为单体进行四元共聚反应,合成出了两性离子聚合物抗高温抗海水降滤失剂。考察了单体配比、pH值、引发剂加量等因素对聚合物降滤失性能的影响,确定了最佳聚合条件为:4种单体AM、AA、AMPS、DMDAAC的质量比为4∶4∶1∶1;聚合体系的pH值为6.5;最佳引发剂浓度为0.075%。对合成产物进行高温高盐条件下的降滤失性能评价,结果表明,该聚合物在海水中的降滤失效果显著,在海水浆中的抗温能力在220℃以上,解决了聚合物在高温高盐情况下易降解的问题,能够满足海洋高温钻井对降滤失剂的需求。Using AA,AM,AMPS and DMDAAC as monomers,an amphoteric polymer used in drilling fluid as a high temperature filtration reducer is synthesized. Laboratory experiments were conducted to examine the effect of monomers concentration,pH,and concentration of initiator etc. on the performance of the final product. It is concluded that at a mass ratio of AM ∶AA ∶AMPS ∶DMDAAC = 4∶4∶1∶1,a pH of 6.5,and an initiator's concentration of 0.075%,a final product of optimum property is obtained. This polymer is very suitable for use in seawater drilling fluid;it works at 220 ℃ and provide a solution for filtration control in offshore drilling.

关 键 词：降滤失剂 高温钻井液 抗温 抗盐 共聚物 

分 类 号：TE254.4[石油与天然气工程—油气井工程]