SEBS改性磺化沥青及降滤失性能评价  

SEBS's modifing sulfonated asphalt and evaluation of filtrate reduction

作　　者：马丽华[1] 张驰 邓小刚[1] 孟义征 黎鹏 彭玉凤 姜雄 MA Li-hua;ZHANG Chi;DENG Xiao-gang;MENG Yi-zheng;LI Peng;PENG Yu-feng;JIANG Xiong(School of Chemistry and Chemical Engineering of Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500

出　　处：《应用化工》2018年第12期2577-2580,共4页Applied Chemical Industry

基　　金：国家自然科学基金(P3045)

摘　　要：氢化苯乙烯丁二烯共聚物(SEBS)与沥青互溶后磺化,制备出磺化沥青封堵防塌剂,考察了SEBS对沥青增溶性、起泡性、软化点以及对磺化后沥青溶解性的影响,并考察了不同磺化度沥青对高温高压滤失量的影响及原因分析。结果表明,SEBS的加入,不仅在磺化前有利于增溶沥青,并促进磺化完全,而且能够很好地抑制钻井液的起泡。扫描电镜测试表明在特定磺化度下,磺化沥青能够和泥饼形成致密的堵层,起到良好的封堵防塌作用。The plugging and anti-sloughing agent of sulfonated asphalt was prepared by sulfonation of dissolved matter of SEBS and asphalt. First,the influence of SEBS on solubilization,foaming,softening point and solubility after sulfonation of asphalt was examined; Second,the influence of asphalt with different degree of sulfonation on high temperature and high pressure filtration capacity was examined and the analysis were made. The results show the addition of SEBS not only is helpful to solubilizate asphalt before sulfonation and promote asphalt to sulfonating completely,but also restrain the bubble property of drilling fluid very well; Scanning electron microscopy test showed that at specific sulfonation degree,with the mud cake the asphalt can form a dense block which has good sealing and anti-sloughing effect.

关 键 词：封堵防塌剂 磺化沥青 SEBS 钻井液 表面活性剂 

分 类 号：TQ316.62[化学工程—高聚物工业] TE254.4[石油与天然气工程—油气井工程]