表面活性剂驱油乳化行为的分子动力学模拟  

Molecular Dynamics Simulation of the Emulsification Behavior of Surfactant Flooding

作　　者：史鹏 罗海斌[2] 布和巴特尔[1] 林鹏[1] 任德财[1] Shi Peng;Luo Haibin;Bu He Bater;Lin Peng;Ren Decai(Heilongjiang Institute of Technology,Harbin Heilongjiang 150026;Harbin Institute of Petroleum,Harbin Heilongjiang 150000)

机构地区：[1]黑龙江工程学院,黑龙江哈尔滨150026 [2]哈尔滨石油学院,黑龙江哈尔滨150000

出　　处：《山西化工》2023年第5期1-2,17,共3页Shanxi Chemical Industry

基　　金：黑龙江工程学院博士科研启动基金项目(2020BJ07);黑龙江省自然科学基金(LH2019B028)。

摘　　要：表面活性剂在乳化、降黏、溶解等方面得到了广泛的应用。近年来,由于其具有双性,使其在稠油中具有很好的应用和开发潜力,已引起众多学者的广泛关注。油田开发及试验结果表明,加入表面活性剂能显著地减少稠油的黏度,并能有效地阻止或阻止其在页岩中的沉淀。但是,从分子层面来看,目前还没有对表面活性剂降黏机理、不同稠油成分、不同的加入方式对降黏效果的影响进行了深入的研究。通过分子动力学模拟,对重油组分和表面活性剂的分子模型进行了建模,选取了适当的力场参数,并对其进行了仿真。研究结果表明,以表面活性剂为代表的两性化合物在不同沥青质重油中的乳化作用机制是可行的。Surfactants have been widely used in emulsification,viscosity reduction,dissolution,and other fields.In recent years,due to its dual nature,it has great potential for application and development in heavy oil,and has attracted widespread attention from many scholars.Oilfield development and experimental results have shown that adding surfactants can significantly reduce the viscosity of heavy oil and effectively prevent or prevent its precipitation in shale.However,from a molecular level perspective,there has been no in-depth research on the viscosity reduction mechanism of surfactants,the effects of different heavy oil components,and different addition methods on the viscosity reduction effect.Through molecular dynamics simulation,the molecular models of heavy oil components and surfactants were modeled,and appropriate force field parameters were selected and simulated.The research results indicate that the emulsification mechanism of amphoteric compounds represented by surfactants in different asphaltene heavy oils is feasible.

关 键 词：面活性剂 驱油乳化行为 分子动力学 

分 类 号：O647.2[理学—物理化学]