RESEARCH METHOD FOR PIPELINE DEMULSIFICATION PROCESS Russian patent published in 2015 - IPC G01N31/00 G01N33/26 

FIELD: oil and gas industry.

SUBSTANCE: research method for the pipeline demulsification process includes preparation of a synthetic brine, which composition corresponds to the ionic composition of the deposit brine water, creation of blank and work samples, setting of samples at a reciprocating shaker moving at the speed equivalent to the speed of emulsion motion at the pipeline demulsification, at that the time and temperature of mixing are set as the values corresponding to the pipeline demulsification, introduction of a demulsifier and rust and salting inhibitors in a sequence, concentration and quantity that simulate local dosing of the reagents at feed points in the real system of the pipeline demulsification, withholding of the above agents within 20-24 hours at room temperature, determination of the quantitative content of the solubilised oil in the water phase and receipt of a conclusion on the rust and salting inhibitors effect on the quantitative content of the oil solubilised by the demulsifier. At that the blank and work samples consist of a water-in-oil emulsion prepared of pure oil from the researched deposit and synthetic brine; the samples are obtained by mixing during 30-35 minutes with the rotation rate of the stirrer of at least of 2600 r/min.

EFFECT: method ensures consideration of a mutual effect of the rust and salting inhibitors to the quantitative content of the oil solubilised by the demulsifier.

5 tbl, 1 ex