Witbreak® demulsifier intermediates deliver more controlled and efficient water removal during crude oil production and separation processes in the oilfield. The versatile Witbreak® GBG-3172 demulsifier is used as a produced fluid separation aid offering functionalities for a broad range of crude oils (geographic and API, including asphaltenic and paraffinic). It works well as a water dropper and a drier with good interface control properties across a variety of temperatures, including low temperatures.