Abstract In this article, demulsifiers used to break down the oil emulsions of our local fields were studied, comparing their effectiveness. The effect demulsifier and amount water extracted from analyzed using deposition centrifuge methods. positive temperature increase on efficiency was also optimal values for today are compared. resulting composition reduces formation salt sediments in proce...

The goal of this research is to prepare novel amphiphilic graft copolymers (nonionic) based on hydrophilic poly (ethylene glycol) methyl ether (mPEG) and hydrophobic methacrylate (MMA) at room temperature pressure. To generate P(mPEG-g-MMA) grafts, was synthesized grafted with varied ratios in the existence benzoyl peroxide as an initiator utilizing a macro-free radical procedure under effect h...

The current practice for crude oil demulsifier selection consists of pre-screening the best performing demulsifiers followed by field trials to determine optimum dosage. method choice ranking is bottle test. As there no standard test method, are different methodologies reported in literature. In this work, a new approach and trial was described which improved significantly dosage demulsifier. o...

The feasibility of indirect application of low frequency ultrasound for demulsification of crude oil was investigated without using chemical demulsifiers. Experiments were performed in an ultrasonic bath with frequency of 35 kHz. Synthetic emulsions with water content of 12%, 35% and 50% and median of droplet size distribution (DSD), median D(0.5), of 5, 10 and 25 μm were prepared from crude oi...

A theoretical model is developed to consider the effect of demulsifier agent on demulsification of water-in-crude oil emulsion. A thermodynamic approach is considered to correlate the critical micelle concentration of a demulsifier to the collision frequency function in population balance equation (PBE). Based on the proposed correlation, the collision frequency function is modified to account ...