AA/AMPS共聚物钻井液降黏剂的合成及性能评价  

Synthesis and Properties of AA/AMPS Copolymer as Viscosity Reducer for Drilling Fluids

作　　者：谢建宇[1,2] 王旭[2] 王亚彬[2] 张滨[2] 胡小燕[2] 周乐群[2] 

机构地区：[1]北京化工大学理学院 [2]中原石油勘探局钻井工程技术研究院

出　　处：《钻井液与完井液》2010年第4期16-19,共4页Drilling Fluid & Completion Fluid

基　　金：中原石油勘探局重大科技攻关项目"超高温钻井液体系研究"(2007301-3)部分研究成果

摘　　要：以丙烯酸(AA)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)共聚,合成出了一种抗220℃高温的钻井液降黏剂。对降黏剂的合成条件进行了优化,并对其在钻井液中的降黏性能进行了评价。通过IR对优化条件下合成的共聚物进行了表征,借助热分析考察了共聚物的热稳定性。结果表明,优化条件下产生的共聚物的降黏效果最好,在淡水基浆中加量为0.5%时,降黏剂的室温降黏率可以达到74.5%;在220℃下老化16h后,降黏剂的高温降黏率可以达到89.3%,并且具有较好的抗盐、钙性能,可用于各种类型的水基钻井液体系中。Acrylicacid(AA)/2-acrylamido-2-methyl-propanesulfon-ic acid (AMPS) copolymer was synthesized and used as a viscosity reducer for drilling fluids resisting 220 ℃. The synthesis conditions were optimized, and the viscosity reducing profermance was evaluated. The copolymer, which was synthesized in the optimal conditions, was characterized by infrared (IR), and its thermal stability was investigated by thermal analysis. The results showed that the effect of its reducing viscosity was excellent, which was synthesized in the optimal conditions. When the content of the viscosity reducer was 0.5% in a fresh water base mud, its viscosity reducing ratio could reach 74.5% at room temperature and reach 89.3% after heat rolling for 16 hours at 220 ℃. At the same time, the copolymer could exhibit good salt-and calcium-resistance, and be used in various water-based drilling fluid systems.

关 键 词：钻井液添加剂 降黏剂 丙烯酸 2-丙烯酰胺基-2-甲基丙磺酸共聚物 合成 高温 

分 类 号：TE254.4[石油与天然气工程—油气井工程]