稠油流量监测涡轮表面超双疏涂层的构筑与性能研究  

Study on the preparation and performance of water and oil super-phobic coating on the surface of the turbine for monitoring the flow of heavy oil

作　　者：宋海 张梦华 安鹏 武元鹏[2] Song Hai;Zhang Menghua;An Peng;Wu Yuanpeng(Sinopec Northwest Oilfield Branch/Sinopec Key Laboratory of Enhanced Recovery of Fracture-cave Reservoir,Urumqi,Xinjiang 830011,China;School of New Energy and Materials,Southwest Petroleum University,Chengdu,Sichuan 610500,China)

机构地区：[1]中国石油化工股份有限公司,西北油田分公司,中国石化缝洞型油藏提高采收率重点实验室,新疆乌鲁木齐830011 [2]西南石油大学新能源与材料学院,四川成都610500

出　　处：《日用化学工业》2021年第12期1179-1185,共7页China Surfactant Detergent & Cosmetics

基　　金：中石化科研“顺北一区采输关键技术研究与应用”项目(编号P18022-1)。

摘　　要：以正硅酸乙酯和氟硅酸水解产物为基体,加入结构控制剂,制得具有微纳结构的双疏液涂层前驱体,喷涂固化后,可形成具有双疏液性的涂层。利用高氟硅材料和表面微结构控制剂,通过改变表面自由能和固体表面形貌来控制固体表面的浸润性。考察了结构控制剂的种类、含量及喷涂条件(喷涂量、基底温度、喷涂距离)对涂层双疏液性能的影响。实验结果表明,用纤维状二氧化硅纳米管作为微结构控制填料,制备的双疏液涂层性能最佳。在氟硅聚合物中加入5 g/L的自制二氧化硅纳米管,可使涂层对重油介质的接触角明显增大,对重油介质的滚动角减小。将二氧化硅纳米管的质量浓度提高到15和20 g/L时,对其表面微观结构和双疏液性没有明显影响,所形成的双疏液涂层能在160℃下长时间使用,且不受盐腐蚀。最优的喷涂条件为二氧化硅纳米管质量浓度10 g/L,喷涂量10 mL,底温150℃,喷距6 cm。双疏液材料涂覆后的涡轮能够满足稠油工况下的测速要求,保证了涡轮流量计在稠油开发监测中的正常工作,解决了稠油粘着涡轮机的难题。The water and oil super-phobic coating precursor with a micro-nano structure was produced by adding structure control agents to the substrate which was composed of the hydrolysis products of ethyl orthosilicate and fluorinated decyl trimethoxysilane,and after spraying and curing,a coating with water and oil super-phobicity could be formed.Using highly fluorinated silicon materials and surface microstructure control agents,the wettability of the solid surface has been controlled by changing the surface free energy and surface morphology.The effects of the type and content of structure control agents and the spraying conditions(spraying volume,substrate temperature,and spraying distance)on the properties of the coatings were investigated.The silica nanotubes made by ourselves with natural halloysite(nanotube),sepiolite(nanofilament)and montmorillonite(nanoflake)were selected as microstructure control fillers.The experimental results showed that the water and oil super-phobic coating with the best performance was prepared by using fibrous silica nanotubes as the microstructure control filler.By adding 5 g/L of silica nanotubes to the fluorosilicone polymer,the coating obtained could significantly increase the contact angle of heavy oil and decrease the roll angle of heavy oil.Increasing the mass concentration of silica nanotubes to 15 and 20 g/L had no significant effect on the surface microstructure and water and oil super-phobicity.During its formation,a large number of Si-Si bonds formed and the coating could be used for a long time at 160℃and was not subject to salt corrosion.The optimal spraying conditions were silica nanotube mass concentration of 10 g/L,spraying volume of 10 mL,substrate temperature of 150℃,and spraying distance of 6 cm.The turbine coated with the water and oil super-phobic material could meet the speed measurement requirements under thick oil conditions,ensuring the normal operation of the turbine flowmeter in the monitoring and development of thick oil and solving the problem of thick o

关 键 词：双疏涂层 稠油粘附 涡轮表面 正硅酸乙酯 全氟硅烷 二氧化硅纳米管 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]