纳米材料复合泡沫缓速酸协同增效作用的研究  

Synergistic effect of nano-material composite foam retarding acid

作　　者：王磊[1] 张学鹏 薛蓉 刘环宇[2] 孟磊 马少云[1] WANG Lei;ZHANG Xue-peng;XUE Rong;LIU Huan-yu;MENG Lei;MA Shao-yun(Shaanxi Key Laboratory of Chemical Additives for Industry,Shaanxi University of Science & Technology,Xi’an 710021,China;Oil Production Plant 3 of PetroChina Changqing Oilfield Company,Yinchuan 750006,China;Research Institute of Oil & Gas Technology Changqing Oilfield Company,Xi’an 710018,China)

机构地区：[1]陕西科技大学陕西省轻化工助剂重点实验室,陕西西安710021 [2]中国石油长庆油田分公司第三采油厂,宁夏银川750006 [3]长庆油田油气工艺研究院,陕西西安710018

出　　处：《应用化工》2019年第2期276-280,共5页Applied Chemical Industry

基　　金：国家自然科学基金(51103081);陕西省工业科技攻关项目(2016GY-193)

摘　　要：为了增加酸化压裂过程中酸液的刻蚀距离,增强作业效果,由纳米SiO_2和表面活性剂YEP-1和20%HCl制备了高效纳米泡沫缓速酸体系,研究纳米材料的表面性能、粒径等因素对表面活性剂在盐酸溶液中发泡性能的影响,测试了复合酸液体系的酸岩反应动力学参数和溶蚀速率。结果表明,采用粒径为20 nm的亲水型SiO_2纳米材料作为稳泡剂效果最佳,并使用两性表面活性剂YFP-1作为起泡剂,当SiO_2和YFP-1的质量分数分别为体系总质量0.5%和1.0%时,酸液起泡体积明显减小,泡沫更加致密,半衰期显著增大,复合酸液体系配比为20%HCl+1.0%YFP-1+0.5%SiO_2时,显著降低了岩芯动态溶蚀速率,为实现深部酸化提供了技术支持。In order to increase the etching distance of acid in the process of acidizing fracturing and enhance the operation effect.The synergistic effect of nano-materials and surfactants in the acid system was studied,and the high efficiency nano-foam retarded acid system was prepared.Indoor surface properties of nanomaterials and particle size on the influence of surfactant in hydrochloric acid solution foaming performance was studied,and the acid rock reaction kinetics parameters were tested and compared,the characterization of nano materials and the dissolution rate of compound acid surfactant system.The results showed that the hydrophilic SiO 2 nano-materials with a particle size of 20 nm were the best for the stabilizer,and the self-made ampholytic surfactant YFP-1 was used as the foaming agent.Based on the total mass of the system,when the mass fraction of SiO 2 and YFP-1 was 0.5%and 1.0%respectively,the volume of the acid bubbly was significantly reduced,the foam was more dense,and the half-life was significantly increased.The ratio of the compound acid system was 20%HCl+1.0%YFP-1+0.5%SiO 2,which significantly reduced the dynamic corrosion rate of core and provided technical support for deep acidification.

关 键 词：纳米颗粒 两性表面活性剂 泡沫缓速酸 岩心动态溶蚀速率 协同增效作用 

分 类 号：TQ111[化学工程—无机化工] TE39[石油与天然气工程—油气田开发工程]