A system for processing oil and gas at an offshore facility includes a single stage separation module. A gas stream from the single stage separation module is pressurized in a primary compressor, and then is used to heat the incoming oil and gas upstream of the single stage separation module. Flash gas from treatment of an oil stream from the single stage separation module is pressurized in a flash gas compressor and then is used to heat glycol utilized in a gas dehydration unit. The pressurized flash gas is then commingled with the gas stream from the single stage separation module upstream of the primary compressor.