双疏性改性石英砂的制备及其控水控油性能  

Preparation of double hydrophobic modified quartz sand and its water and oil control properties

作　　者：谭翔滔 段文猛[1] 胡亮 范绍林 黄朵 郑存川[1] TAN Xiang-tao;DUAN Wen-meng;HU Liang;FAN Shao-lin;HUANG Duo;ZHENG Cun-chuan(School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China;Sichuan Shangzhideng New Material Co.,Ltd.,Guanghan 618300,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500 [2]四川上之登新材料科技有限公司,四川广汉618300

出　　处：《应用化工》2023年第5期1426-1430,共5页Applied Chemical Industry

基　　金：四川省重点研发项目(2021YFG0112)。

摘　　要：针对天然气井在开采时存在地层出水,导致气井产量大幅度下降,以及采气能耗增加的问题,以苯乙烯和甲基丙烯酸十三氟辛脂为原料,通过聚合反应制备了一种纳米乳液,后对石英砂进行疏水、疏油改性得到一种双疏性改性石英砂。结果表明,含氟单体浓度为60%(质量分数)时,双疏效果较好。采用FTIR、XRD对纳米乳液和石英砂改性前后进行了结构表征,并考察了改性石英砂的控水控油、封堵性能。自吸实验表明,改性石英砂在3 min时控水率可达97.4%,控油率可达87.6%;封堵实验表明,双疏性石英砂在油、水中封堵率分别为87%,89%。In response to the problem of water coming out of the formation when natural gas wells are extracted,which leads to a significant decrease in gas well production and an increase in energy consumption for gas extraction.The results show that when the concentration of nanoemulsion is 60%,the double sparse effect is better.FTIR and XRD were used to characterize the structure before and after the nanoemulsion and quartz sand,and the water and oil control rate of modified quartz sand were investigated.Self-priming experiments show that compared with unmodified quartz sand,nanoparticle modified quartz sand shows good water control and oil control performance,with a water control rate of 97.4%and an oil control rate of 87.6%at 3 min.Blocking experiments show that the double sparse quartz sand in oil and water blocking rate is 87%and 89%respectively.

关 键 词：气井 改性石英砂 疏水疏油 纳米乳液 控水控油 

分 类 号：TQ317[化学工程—高聚物工业]