大庆外围稠油水热裂解地质协同催化降黏研究

为更好地实现稠油就地水热裂解降黏,以油藏矿物、催化剂和供氢剂为催化体系,检测其对大庆外围稠油水热裂解反应的催化作用.实验结果表明,油藏矿物可以催化稠油水热裂解反应,并可与催化剂协同催化稠油水热裂解,矿物与油溶性催化剂的协同催化效果好于水溶性催化剂;供氢剂的加入可进一步强化稠油水热裂解反应,与不添加供氢剂相比,反应后胶质...

Study on Geocatalytic Aquathermolysis of Heavy Oils from Periphery of Daqing Oilfield to Reduce Viscosity

In order to reduce the viscosity of heavy oil more effectively, the catalyst system, which contains reservoir minerals, catalysts and hydrogen donors, is used to detect catalytic effects on aquathermolysis reaction of heavy crude oil from Daqing Oilfield. Experimental results show that reservoir minerals can not only catalyze aquathermolysis on their own but also exert a synergetic effect with catalysts in the reaction. In the presence of reservoir minerals, aquathermolysis is reinforced when catalysts are added to reaction system. And the synergetic effect of reservoir minerals with oil - soluble catalyst is better than with water - soluble catalyst. Catalytic effect is improved further more if hydrogen donors are added, with the viscosity reduction rate increased by 5.7%, contents of saturates and aromatics increased by 0.67% and 0.58% respectively, contents of resins and asphaltenes decreased by 1.06% and 0.87% respectively in comparison with those values without hydrogen donors. The quality of heavy oil is upgraded after the reaction.