摘要
以苯乙烯和α-烯烃为原料,利用本体聚合法制备苯乙烯和α-烯烃的共聚物,再用乙酸酐与浓硫酸的混合物处理该共聚物,对其加以改性制备出了油基钻井液增黏剂。利用元素分析、红外光谱、热重-差热分析以及核磁共振分析对产物的化学结构进行了表征,分析结果显示,改性产物为低磺化程度的橡胶类物质。测试了样品在白油基钻井液中的流变性能,该样品能够有效增黏提切,而且可以降低钻井液的塑性黏度,抗温可达到180℃。
The copolymer styrene-α-olefin is prepared by bulk polymerization method with styrene and α-olefin,which the copolymer is then treated by the mixture of acetic anhydride and concentrated sulfuric acid to obtain the polymer viscosifer for oil-based drilling fluid.The structural characterization is performed by element analysis,infrared spectrum,TG-DTA and NMR analysis,and the analysis results show that the product is of rubber material with low degree of sulfonation.After added in white oil,the rheological properties are evaluated that it can improve shear stress but reduce plastic viscosity,as well as it can be used at the highest temperature of 180 ℃.
出处
《钻井液与完井液》
CAS
北大核心
2013年第2期6-9,89,共4页
Drilling Fluid & Completion Fluid
基金
国家科技重大专项"复杂地质条件下深井钻井液与高温高压固井技术研究"(2011ZX05021-004)
湖北省教育厅科研项目(B20101307)
关键词
增黏剂
结构分析
油基钻井液
流变性能
Viscosifier
Structure analysis
Oil-based drilling fluid
Rheological property
