SDBS/Na2CO3改性膨润土及其在钻井液中的应用研究  

SDBS/Na2CO3 modified bentonite and application in drilling fluid

作　　者：孙孟莹 张传盈 郭明哲 WAKAM FOGAING MARCELLIN 杨双春[1] 徐明磊 李东胜[3] SUN Meng-ying;ZHANG Chuan-ying;GUO Ming-zhe;WAKAM FOGAING MARCELLIN;YANG Shuang-chun;XU Ming-lei;LI Dong-sheng(College of Petroleum and Natural Gas Engineering,Liaoning Shihua University,Fushun 113001,China;College of Petroleum and Natural Gas Engineering,China University of Petroleum,Beijing 100000,China;Department of Chemistry,Chemical Engineering and Environment,Liaoning Shihua University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001 [2]中国石油大学石油工程学院,北京100000 [3]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113001

出　　处：《应用化工》2019年第10期2378-2382,共5页Applied Chemical Industry

基　　金：辽宁省2017年科技厅项目(20170520344);辽宁省2017年教育厅项目(L2017LFW012);中石油2017年科技创新基金项目(2017D-5007-0201)

摘　　要：对钙基膨润土经过钠化改性,其胶结性、悬浮性、分散性均得到提升,在水介质中,触变性较好,凝胶结构稳定,应用于钻井液中表现良好。实验考察了磁力搅拌时间、微波时间及功率、温度、十二烷基苯磺酸钠/碳酸钠(SDBS/Na2CO3)比例及50%无水乙醇等因素对膨润土改性的影响。得到制备改性膨润土最佳条件:m(膨润土)∶m(SDBS)∶m(Na2CO3)=16∶2∶3,50%无水乙醇40mL,磁力搅拌时间3min,微波时间2min,反应温度40℃,微波功率200W;将其用于制备钻井液,配方为:5%碳酸钠+4%改性膨润土+0.7%FLA+2%聚乙二醇+3%硅酸钾+0.8%硫酸钡,并对体系的流变性、滤失性、抑制性及抗污染性进行评价。The cementation,suspension and dispersibility of calcium bentonite were improved by sodium modification.In water medium,thixotropy and fluidity are good,and it is easy to form a stable gel structure,which performs well in drilling fluid.The influences of magnetic stirring time,microwave time,power,temperature,SDBS/Na2CO3 ratio and 50% anhydrous ethanol on the natrified bentonite were investigated.Get the best preparation conditions of modified bentonite:the quality of m (bentonite)∶ m (SDBS)∶ m (Na2CO3) for 16 ∶2 ∶3,40 mL of 50% ethanol,magnetic stirring time of 3 min and 2 min,microwave time,reaction temperature 40 ℃,microwave power 200 W.Drilling fluid was prepared by using modified bentonite.The formula was:5% sodium carbonate +4% modified bentonite +0.7%FLA+2% polyethylene glycol +3% potassium silicate +0.8% barium sulfate.At the same time,the rheological,filtration,inhibition and pollution resistance of the system were evaluated.

关 键 词：改性膨润土 水基钻井液 配方设计 性能评价 

分 类 号：TQ420.4[化学工程] TE254[石油与天然气工程—油气井工程]