... Abstract Demulsification is well known and tested, however with regards to heavy oil treatment, the crudes become more difficult to handle. Demulsification is subject to a number of external factors such as temperature, viscosity and crude oil composition, which affect the rate of water drop...

... to evaluate the polarity of several commercially available chemicals for crude oil demulsification. Because asphaltenes are considered to play a decisive role in emulsion stability, their polarity was also determined. The results provided an overall comprehension provided an overall comprehension about...

... Abstract Dynamic interfacial tension is one of several key factors relevant to the stability of crude oil emulsions. Studies of dynamic interfacial tension behavior associated with the demulsification of crude oil emulsions can have a great impact on the development of crude oil...

... Nowadays, possible separation methods of water-in-oil (W/O) emulsions include gravity or centrifugal settling, thermal treatment, chemical demulsification, pH adjustment, electrostatic demulsification, freeze/thaw method, filtration, membrane separation, microwave radiation and ultrasonic energy...

... from either industrial activity or environment are receiving considerable attention as potential demulsifying agents of crude oil emulsions. In a study conducted by Yang et al. ( Yang et al., 2021 ), natural lotus leaf coated with nanosilica was evaluated for the demulsification of crude oil emulsion...

... demulsification treatment and removal enhanced recovery symposium injection untreated cycle comparison sagd petroleum engineer spe international symposium Introduction It has been estimated that about three-quarters of the oil produced in the U.S. is emulsified. Emulsions in heavy oil reservoirs...

... strengths up to 4 kV/cm, even exceeding the strengths required for efficient demulsification. where: А- the constant for the given emulsion; δ- the interfacial tension coefficient, when there is no the external electric field; ε- the oil dielectric permeability; r - the droplet radius. And finally...

... crude oil demulsifers were available. The addition of ethylene oxide / propylene oxide to alkylphenol formaldehyde resins and to oligoamines yielded emulsion breakers that performed sufficiently at low concentrations. To achieve the future requirements of environmentally acceptable oilfield chemicals...