## A question about standard metric cube

Hi everybody,
I'm having difficulties sizing a compressor for natural gas.
First,my assumption is to take natural gas as mixture of ideal gases.The compression must be between 9 and 32 bar and it starts at 45 °C.
I know that volumetric flow rate must be 85000 Sm3 per day ,where I assume 15°C and 1 bar as Standard Conditions.
Now how do I think about volumetric flow rate considering conditions of the fluid inside the compressor?
Do I need to change unit of measure of the volumetric flow rate from (Sm3 per day) to (m3 per day) using ideal gas' law?
Because I must find the power required by comrpessor.