稠油沥青质水热裂解供氢催化及地质协同作用研究

探讨了辽河稠油中沥青质在注蒸汽热采条件下供氢催化水热裂解反应行为,以及油藏矿物对沥青质水热裂解的强化作用,结果表明,油藏矿物与硫酸镍、甲酸供氢剂可协同催化沥青质水热裂解反应,最终可使沥青质降解率达到49.2%;供氢催化反应前后稠油中沥青质红外谱图说明稠油中沥青质在供氢催化改质降粘反应时所发生的化学结构的变化,反映了沥青质在反应过程中经历了侧链断裂、环烷脱氢芳构化以及芳香结构进一步缩合等反应;对沥青质水热裂解反应产物中轻组分进行气相色谱全烃分析,证实了在注蒸汽热采条件下沥青质可以实现部分催化降解。

A Study of Catalytic Hydrotreating Effect and Concerted Geocatalysis on Aquathermolysis of Asphaltenes in Heavy Oil

The concerted effects of catalyst,hydrogen donors and reservoir minerals on aquathermolysis of asphaltenes extracted from Liaohe heavy oil under the condition of steam injection is discussed.The results show that the asphaltenes degrada-tion ratio can reach 49.2% with the joint action of reservoir minerals,formic acid and nickel sulfate.The results of in-frared spectrogram of catalytic hydrotreating aquathermolysis of asphaltenes in heavy oil reflected the changes of chemi-cal structure of asphaltenes and s...