钻井液与完井液2017，Vol.34Issue(6)：8-12,17,6.DOI:10.3969/j.issn.1001-5620.2017.06.002
钻井液降黏剂SSMA的本体聚合制备与性能
Study on the Performance of SSMA-A Thinner Made Through Mass Polymerization
摘要
Abstract
Mass polymerization and solution polymerization were used to prepare styrene-maleic anhydride (SMA) with styrene (St)and maleic anhydride (MA).The two SMAs made were then sulfonated to sulfonated styrene-maleic anhydride (SSMA).SSMAs made from the two methods were evaluated for their abilities in drilling fluids to reduce viscosity and to resist the effects of high temperature and salt contamination.It was found that the two SSMAs made both can effectively tear apart the spatial networking structure formed by the clay particles in the drilling fluid.In saltwater muds and at high temperatures,the two SSMAs performed differently in viscosity reduction.First,in fresh water base drilling fluids,the two SSMAs both can reduce mud viscosity efficiently.At a concentration of 0.75％,the SSMA made through mass polymerization can reduce the viscosity by 95.38％,while the SSMA made through solution polymerization can reduce the viscosity by 85.54％.Second,in saltwater drilling fluids,the SSMA made through mass polymerization had better viscosity reduction ability and better salt resistance.At a concentration of 1％,the viscosity of saltwater drilling fluids can be reduced by 53.33％ by the SSAM made through mass polymerization.Third,in aging experiments at elevated temperatures,the viscosity reducing performance of the SSMA made through mass polymerization was less affected by temperature than that of the SSMA made through solution polymerization.After aging at 230 ℃,the rate of viscosity reduction (by the SSMA made through mass polymerization) was still maintained at 40％ or higher.Fourth,in high density drilling fluids,SSAM made through mass polymerization had higher rate of viscosity reduction.After aging at 220 ℃,the rate of viscosity reduction was still maintained at 60％ or higher,higher than the rate of viscosity reduction of SSMA made through solution polymerization,which was 47.45％ in high density drilling fluids.关键词
降黏剂/本体聚合/溶液聚合/钻井液添加剂/高温/抗盐Key words
Water base drilling fluid/High temperature and salt resistance/Styrene/Maleic anhydride/Thinner/Mass polymerization/Solution polymerization分类
能源科技引用本文复制引用
王飞龙,杨泽星,刘泽,邱心明,刘丰,王新锐,刘剑琼..钻井液降黏剂SSMA的本体聚合制备与性能[J].钻井液与完井液,2017,34(6):8-12,17,6.基金项目
国家863课题“海上大位移井钻井液关键技术研究”(2012AA091502) （2012AA091502）
国家科技重大专项课题“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). （2011ZX05021-004）
