Use of alkoxylated alkanolamide as friction-reducing agent
Use of alkoxylated alkanolamide together with alkoxylated alcoho
Use of radiation-induced polymers as friction reducing agents
Use of ultrasonic energy in the transfer of waxy crude oil
Valve configuration and method for heating a valve...
Viscosity modification of hydrocarbonaceous materials
Zwitterionic surfacant together with an anionic...