FORMATION FLUID TREATMENT METHOD Russian patent published in 2006 - IPC E21B43/34 B01D17/00 B01D19/00 

FIELD: oil production, oil refining, oil chemistry and other fields connected with emulsion breakdown, particularly adapted for formation fluid separation into such components as oil, gas and water.

SUBSTANCE: method involves subjecting formation fluid flow to magnetic treatment to provide emulsified water droplet coalescence; breaking inhibiting shells at oil-water interface to provide additional water droplet collision. To increase rate of water-gas-oil emulsion stratification, to improve quality of emulsion separation into oil, gas and water and to reduce emulsifier consumption above magnetic treatment is carried out in field directed transversely to fluid flow and having strength H = 5-10kA/m and magnetic field strength gradient dH/dr=2-5·10⁶ A/m². Unidirectional unipolar point constant magnets are used for above magnetic field creation. Inhibiting shells are broken with the use of vibration having 10-100 Hz frequency and 0.5-10 mm amplitude.

EFFECT: increased emulsion breakdown rate along with decreased hydrocarbon concentration in water and water content in hydrocarbon, as well as reduced demulsifier consumption.

1 tbl, 2 dwg