FIELD: chemistry.
SUBSTANCE: following operations are carried out by the method of extracting oil: a) steam is produced; b) steam is introduced into a formation containing oil; c) a mixture of water and oil is withdrawn from the formation; d) produced water is separated from the mixture of water and oil; e) produced water is treated, which includes a treatment in a seeded evaporator to produce distillate and an effluent; e) distillate is used to produce an additional amount of steam for introduction into the formation; g) the solvent is mixed with the effluent, and h) the precipitated solids are separated, containing one or more salts from the effluent after step (g).
EFFECT: increasing the efficiency of the water treatment.
27 cl, 1 dwg
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