A method for producing liquefied natural gas, comprising: feeding natural gas through a single heat exchanger; feeding a first portion of a single mixed refrigerant from the heat exchanger to a first stage of a first compressor, compressing the first portion of the single mixed refrigerant in the first compressor; feeding a second portion of the single mixed refrigerant from the heat exchanger to an intermediate stage of the first compressor, compressing the second portion of the single mixed refrigerant in the first compressor; combining the first portion of the single mixed refrigerant with the second portion of the single mixed refrigerant in the first compressor to produce the single mixed refrigerant; cooling the single mixed refrigerant in a first cooler to produce a first liquid phase and a gaseous phase; separating the first liquid phase from the gaseous phase in a first liquid separator; compressing the gaseous phase in a second compressor; cooling the compressed gaseous phase in a second cooler to produce a second liquid phase and a gaseous phase as the second portion of the single mixed refrigerant; separating the second liquid phase from the gaseous phase as the second portion of the single mixed refrigerant in a second liquid separator; pressurizing the first liquid phase in a pump fluidly coupled with the first liquid separator; combining the first liquid phase from the pump with the second liquid phase from the second liquid separator to produce the first portion of the single mixed refrigerant; feeding the first portion of the single mixed refrigerant to the heat exchanger and feeding the second portion of the single mixed refrigerant to the heat exchanger to cool at least a portion of the natural gas flowing therethrough to thereby produce the liquefied natural gas. feeding natural gas through a single heat exchanger; feeding a first portion of a single mixed refrigerant from the heat exchanger to a first stage of a first compressor, compressing the first portion of the single mixed refrigerant in the first compressor; feeding a second portion of the single mixed refrigerant from the heat exchanger to an intermediate stage of the first compressor, compressing the second portion of the single mixed refrigerant in the first compressor; combining the first portion of the single mixed refrigerant with the second portion of the single mixed refrigerant in the first compressor to produce the single mixed refrigerant; cooling the single mixed refrigerant in a first cooler to produce a first liquid phase and a gaseous phase; separating the first liquid phase from the gaseous phase in a first liquid separator; compressing the gaseous phase in a second compressor; cooling the compressed gaseous phase in a second cooler to produce a second liquid phase and a gaseous phase as the second portion of the single mixed refrigerant; separating the second liquid phase from the gaseous phase as the second portion of the single mixed refrigerant in a second liquid separator; pressurizing the first liquid phase in a pump fluidly coupled with the first liquid separator; combining the first liquid phase from the pump with the second liquid phase from the second liquid separator to produce the first portion of the single mixed refrigerant; feeding the first portion of the single mixed refrigerant to the heat exchanger and feeding the second portion of the single mixed refrigerant to the heat exchanger to cool at least a portion of the natural gas flowing therethrough to thereby produce the liquefied natural gas.