摘要
以丙烯酰胺(AM)、烯丙基聚氧乙烯醚(APEG-1000)、对苯乙烯磺酸钠(SSS)、十八烷基二甲基烯丙基氯化铵(DMAAC-18)为共聚单体,以偶氮二异丁脒盐酸盐(V_(50))为引发剂,制备一种抗温达220℃的水基钻井液降滤失剂,并采用FTIR,TG,SEM,EDS,AFM等方法对所制备的降滤失剂进行表征。采用单因素法优化得到最优合成条件为:单体配比n(AM)∶n(APEG-1000)∶n(SSS)∶n(DMAAC-18)=110∶3∶10∶1,引发剂V50用量为0.4%(w),反应温度为60℃,单体总含量为30%(w),反应时间为4 h,反应pH为8。实验结果表明,在淡水基浆中,降滤失剂加量为1.25%(w)时,中压(API)滤失量为7.3 mL,220℃老化后API滤失量为13.2 mL;与5%(w)SMP降滤失剂复配,淡水基浆+1.25%(w)降滤失剂+5%(w)SMP降滤失剂+0.5%(w)FA367包被剂,220℃老化后高温高压滤失量仅为13.6 mL。
A water-based fluid loss additive with temperature resistance up to 220℃was prepared by using acrylamide(AM),allyl polyethylene ether(APEG-1000),sodium p-styrenesulfonate(SSS),and octadecyl dimethyl allyl ammonium chloride(DMAAC-18)as polymerization monomers and azodiisobutymidine hydrochloride(V_(50))as initiator.The prepared fluid loss additive was characterized by FTIR,TG,SEM,EDS and AFM.The optimal synthesis conditions obtained by single factor optimization method are as follows:n(AM)∶n(APEG-1000)∶n(SSS)∶n(DMAAC-18)=110∶3∶10∶1,V50 initiator amount 0.4%(w),reaction temperature 60℃,monomer content 30%(w),reaction time 4 h,and reaction pH=8.The experimental results show that in the fresh water-based slurry,when the amount of fluid loss additive is 1.25%(w),the medium pressure fluid loss is 7.3 mL,and is 13.2 mL after aging at 220℃.When the prepared fluid loss additive is mixed with 5%(w)SMP filtrate reducer and used according to the formula of fresh water base slurry+1.25%(w)prepared fluid loss additive+5%(w)SMP filtrate reducer+0.5%(w)FA367 coating agent,the high-temperature and high-pressure fluid loss aging at 220℃ is only 13.6 mL.
作者
吴艳婷
全红平
黄志宇
李兵
冯小刚
WU Yanting;QUAN Hongping;HUANG Zhiyu;LI Bing;FENG Xiaogang(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;Oil&Gas Field Applied Chemistry Key Laboratory of Sichuan Province,Chengdu 610500,China;Engineering Research Center of Oilfield Chemistry,Ministry of Education,Chengdu 610500,China;Jiqing Oilfield Operation Area,PetroChina Xinjiang Oilfield Company,Jimusar 831700,China)
出处
《石油化工》
CAS
CSCD
北大核心
2023年第7期946-955,共10页
Petrochemical Technology
基金
四川省科技计划资助项目(2019YJ0315)。
关键词
降滤失剂
聚合物
抗高温
吸附
fluid loss additive
polymer
high temperature resistance
adsorption
