Compressor device for compressing gas that comprises a compressor element (2) with a housing (3) with, an inlet (3) and an outlet (6), whereby at least one rotor is affixed in the housing (3) that is provided with a drive (7), whereby the compressor device (1) is provided with an oil circuit (16) for injecting oil into the housing (3) f characterised in that the oil circuit (16) only comprises one pump (23) for driving the oil around in the oil circuit (16), whereby this pump (23) is coupled to a first shaft (9) via a first disengageable coupling (24), more specifically a shaft (9) of the aforementioned drive (7) on the one hand, and to a second shaft (27) via a second disengageable coupling (28), more specifically a shaft (27) of a secondary drive (25) on the other hand, whereby the first and second disengageable couplings (24, 28) between the pump (23) and the first shaft (9) and between the pump (23) and the second shaft (27) are such that the pump (23) is only driven by the shaft of these two shafts (9, 27) that has the highest speed.