FIELD: oil and gas production. SUBSTANCE: apparatus contains pressure tank with connection pipe for receiving oil-well flowing medium and releasing gas separated from the latter. Inside pressure tank, first-step centrifugal separator is disposed for centrifugal separation of the first part of oil- liquid phase to release wet gas containing some amount of residual oil- liquid phase. There is also second-step centrifugal separator inside tank performing secondary centrifugal separation of wet gas to remove the rest of oil-liquid phase. Purified gas is pumped away from tank and oil-liquid phase is pumped away from another outlet pipe. EFFECT: increased compactness and efficiency of apparatus. 8 cl, 6 dwg
