利用核磁共振对稠油水热催化裂解降粘反应的研究  

Application of NMR for Studying Upgrading Heavy Oil By Catalytic Aquathermolysis

作　　者：吴川[1] 雷光伦[1] 姚传进[1] 曹嫣镔[2] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东东营257061 [2]中石化胜利油田分公司采油工艺研究院,山东东营257000

出　　处：《石油天然气学报》2010年第6期311-314,共4页Journal of Oil and Gas Technology

基　　金：中国石油化工集团公司先导性科技项目(P08057);中国石油大学(华东)研究生创新基金项目(2009-4)

摘　　要：通过元素分析仪、分子量测定仪及核磁共振波谱仪对水热催化裂解反应前后的稠油进行了分析,并采用改进的Brown-Ladner(B-L)法计算反应前后沥青质及胶质的平均结构参数。结果表明,沥青质的裂解对稠油粘度的降低起到了非常重要的作用;反应的过程中发生了系列加氢,开环,成环,链的断裂等反应,反应后,沥青质及胶质氢碳原子比均增大,芳碳率降低,环烷碳率及烷基碳率增加,沥青质及胶质芳香环系的缩合程度变小,平均分子中含的结构单元数及其中的总环数减小。The chemical and physical properties of heavy oil both before and after reaction were studied by using elemental analyzer,molecular weight detector and nuclear magnetic resonance(NMR),the average structural parameters of asphalt and colloid both before and after reaction were obtained by using the improved Brown-Ladner(B-L)method.The results show that the pyrolysis of asphaltene plays an important role in viscosity reduction.The hydrogenate,ring cleavage,ring formation,and cracking bond happen in reactions which results in the rate of H/C increase,the rate of aromatic carbon reduction,aromatic carbon and alkylic carbon increase,and the aromaticity decreased of resin and asphaltene after the aquathermolysis.The number of structural unit and the total ring decrease after the reaction.

关 键 词：稠油 水热催化裂解 核磁共振 

分 类 号：TE345[石油与天然气工程—油气田开发工程]