Practice proved that adding chemicals not only decreases the viscosityofcrude but also the back pressure of well head decreased.
实践证明，掺污水加药既可以降低原油粘度，又可以有效地降低井口回压。
2
A method to reduce the viscosityofcrude oil in oil production using combination of chemical and physical viscosity - reducing means was introduced.
介绍了稠油开采过程中因稠油粘度过高采用的物理与化学相结合的降粘方法。
3
The viscosityofcrude oil from viscous oil reservoir is high and heavy hydrocarbon components constitute the majority. So, it is difficult to produce oil from production Wells.