OIL PREPARATION METHOD Russian patent published in 2010 - IPC B01D17/00 

FIELD: oil-and-gas industry.

SUBSTANCE: invention related to oil preparation at oil production and can be used in a chemical and oil industry. A method includes a separate development of highly water flooded and low water flooded oil flows and their mixing. In a distribution unit, dependently on dispersed water content, create two flows: the first one with dispersed water content less than 30%, the second with dispersed water content greater than 30%. Separate gas and free water from the second flow, after that return the second flow into the distribution unit, execute a thermo-chemical treatment, decrease the dispersed water content till lower than 30% in the second flow, then mix it with the first flow and forward both flows together for the following gas-water separation.

EFFECT: wells with the different physic-chemical properties and a water flood degree product treatment efficiency increase.

2 dwg