Duan Yawei, Zhu Youyi, Fan Jian, Li Wenjun, Liu Xintong, Li Hongda
Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing Beijing 100083 China
Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation Beijing 100083 China.
RSC Adv. 2018 Oct 2;8(59):33872-33881. doi: 10.1039/c8ra06739b. eCollection 2018 Sep 28.
Petroleum sulfonate is one of the most important surfactants in the tertiary oil recovery process. However, its complex composition significantly impedes its evaluation, and the relationship between its structure and oil recovery properties is still unclear. In this study, the actives of petroleum sulfonate are subdivided into seven components, a-g, with different polarities column chromatography. The structural information of each component is fully characterized. Moreover, the relationship between the oil recovery properties and the structure of the separated components is systematically studied. The results reveal the average relative molecular mass in the range of 560-626, average alkyl side chain containing 36-40 carbon atoms and alkyl chain containing an average of 6 branched chains is the ideal structure for enhancing oil recovery properties. Furthermore, this study provides a reliable evaluation method and reveals the relationship between the structure and oil recovery properties of petroleum sulfonate.
石油磺酸盐是三次采油过程中最重要的表面活性剂之一。然而,其复杂的组成显著阻碍了对它的评价,并且其结构与采油性能之间的关系仍不明确。在本研究中,通过柱色谱法将石油磺酸盐的活性成分细分为七个具有不同极性的组分,a - g。对每个组分的结构信息进行了全面表征。此外,系统研究了分离组分的采油性能与结构之间的关系。结果表明,平均相对分子质量在560 - 626范围内、平均含36 - 40个碳原子的烷基侧链且平均含6个支链的烷基链是增强采油性能的理想结构。此外,本研究提供了一种可靠的评价方法,并揭示了石油磺酸盐的结构与采油性能之间的关系。