化工进展 ›› 2019, Vol. 38 ›› Issue (s1): 110-115.DOI: 10.16085/j.issn.1000-6613.2019-0855

• 能源加工与技术 • 上一篇    下一篇

BA原油沥青质性质及沉积抑制剂作用机理

李爱英1, 张文秀2, 舒福昌2, 李论1, 李濛1, 雷斌1   

  1. 1 中国石油吐哈油田工程技术研究院, 新疆 鄯善 838200;
    2 长江大学化学与环境工程学院, 湖北 荆州 434023
  • 收稿日期:2019-05-28 修回日期:2019-08-05 出版日期:2019-11-16 发布日期:2019-11-16
  • 通讯作者: 舒福昌,教授,硕士生导师,研究方向为油田应用化学。
  • 作者简介:李爱英(1980-),女,硕士,研究方向为油田应用化学。E-mail:liaiying1@petrochina.com.cn。
  • 基金资助:
    国家自然科学基金(51474034)。

Properties of asphaltene in BA crude oil and mechanism of deposition inhibitor

LI Aiying1, ZHANG Wenxiu2, SHU Fuchang2, LI Lun1, LI Meng1, LEI Bin1   

  1. 1 PetroChina Tuha Oilfield Engineering Technology Research Institute, Shanshan 838200, XinJiang, China;
    2 College of Chemical and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, China
  • Received:2019-05-28 Revised:2019-08-05 Online:2019-11-16 Published:2019-11-16

摘要: 原油开发中出现沥青质沉积问题,会导致油井及集输管线堵塞,从而影响原油正常生产和油田的高效开发。本文通过对BA原油中沥青质进行元素、XPS和FTIR分析,可知该沥青质表面官能团以碳氢化合物(C-C,C-H)为主,还含有硫酚和硫醇等脂肪类硫以及羧基等酸性官能团,可为沥青质沉积抑制剂的选择提供理论依据。抑制剂是通过破坏沥青质缔合体的相互作用来达到抑制聚沉的作用,利用激光粒度仪对原油加正庚烷(沉淀剂)后沥青质颗粒的粒度分布进行测定,结果表明:在油样中加入含有胺基碱性基团的抑制剂FAE183,能抑制沥青质的絮凝与沉淀,使沥青质颗粒的粒径显著减小。由抑制剂的作用机理分析可知,FAE183抑制剂与沥青质的主要作用机理为酸碱作用,并辅以氢键作用和偶极作用。

关键词: 石油, 沥青质, 碳氢化合物, 沉积, 抑制剂, 粒度分布, 作用机理

Abstract: Asphaltene deposition in crude oil will lead to blockage of oil wells and gathering pipelines, thus affecting the normal production of crude oil and the efficient development of oil fields. The elemental analysis, XPS and FTIR analysis of asphaltenes in Iranian BA crude oil show that the asphaltene surface functional group is mainly composed of hydrocarbons (C-C, C-H), and also contains acidic functional groups such as fats sulfur (thiophenol and mercaptan) and carboxyl groups provide a theoretical basis for the selection of asphaltene deposition inhibitors. The inhibitor inhibits the coagulation by destroying the interaction of the asphaltene association. The particle size distribution of the asphaltene particles after the addition of n-heptane (precipitant) to the crude oil is measured by a laser particle size analyzer. The addition of the amine-containing basic group inhibitor FAE183 can inhibit the flocculation and precipitation of asphaltenes, and the particle size of the asphaltenes is significantly reduced. It is known from the mechanism of action of the inhibitor that the main mechanism of action of FAE183 inhibitor and asphaltenes is acid-base action, supplemented by hydrogen bonding and dipole action.

Key words: petroleum, asphaltene, hydrocarbons, deposition, inhibitor, particle size distribution, mechanism of action

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