稠油开采 meaning in English

viscous crude oil production
viscous oil recovery

The new development of improved the recovery ratio of viscous crude oil in tahe oilfield
塔河油田稠油开采工艺新进展
In exploiting heavy oil , water blending is one of the most important methods to lower viscosity of heavy oil and increase its flow property for enhancing oil recovery
摘要在稠油开采过程中，掺水法是降低稠油粘度、增加其流动性达到提高开采效率的重要措施之一。