A method for the liquefaction of natural gas, comprising: taking unpurified natural gas from a gas well; pre-treating the gas for removing impurities; performing a first compression stage for compressing the natural gas from around 10/11 bar to around 30/35 bar and in which the temperatures rise from 30/35 °C to 140/150 °C; performing a first heat exchange stage for cooling down the temperature of the gas from 140/150 °C to 40/45 °C; performing a second compression for compressing the natural gas from around 30/35 bar to around 90/95 bar and during which the temperatures rise from 40/45 °C to 140/150 °C; performing a second heat exchange stage for cooling down the temperature of the gas from 140/150 °C to 40/45 °C; performing a third compression stage for compressing the natural gas from around 90/95 bar to around 245/250 bar and during which the temperatures rise from 40/45 °C to 140/145 °C; performing a third heat exchange for cooling down the temperature of the gas from 140/145 °C to 40/45 °C; performing an additional regeneration heat exchange stage to cool down the temperature of the gas from 40/45 °C to 7/10 °C; performing a first main independent heat exchange cycle (120, 208) to cool down the temperature of the gas from 7/10 °C to -40/-45 °C while pressure is kept at 250 bar; performing a second main heat exchange to cool down the temperature of the gas from -40/-45 °C to -75/-80 °C while pressure is kept at 250 bar; passing the gas at 250 bar and -75/-80 °C through a Joule-Thomson valve allowing the stream to expand thereby reducing its temperature to -150/-155 °C and reducing its pressure to 2 bar; sending the liquefied gas to storage; injecting the gaseous portion of the natural gas downstream the Joule-Thomson valve at -150 °C and 2 bar into the second main heat exchange cycle to help in the cooling process described above, increasing its temperature from -150 °C to -60 °C; and subsequently the gas at -60 °C (212,213) is injected into the regeneration heat exchange stage to help in the cooling process described above. taking unpurified natural gas from a gas well; pre-treating the gas for removing impurities; performing a first compression stage for compressing the natural gas from around 10/11 bar to around 30/35 bar and in which the temperatures rise from 30/35 °C to 140/150 °C; performing a first heat exchange stage for cooling down the temperature of the gas from 140/150 °C to 40/45 °C; performing a second compression for compressing the natural gas from around 30/35 bar to around 90/95 bar and during which the temperatures rise from 40/45 °C to 140/150 °C; performing a second heat exchange stage for cooling down the temperature of the gas from 140/150 °C to 40/45 °C; performing a third compression stage for compressing the natural gas from around 90/95 bar to around 245/250 bar and during which the temperatures rise from 40/45 °C to 140/145 °C; performing a third heat exchange for cooling down the temperature of the gas from 140/145 °C to 40/45 °C; performing an additional regeneration heat exchange stage to cool down the temperature of the gas from 40/45 °C to 7/10 °C; performing a first main independent heat exchange cycle (120, 208) to cool down the temperature of the gas from 7/10 °C to -40/-45 °C while pressure is kept at 250 bar; performing a second main heat exchange to cool down the temperature of the gas from -40/-45 °C to -75/-80 °C while pressure is kept at 250 bar; passing the gas at 250 bar and -75/-80 °C through a Joule-Thomson valve allowing the stream to expand thereby reducing its temperature to -150/-155 °C and reducing its pressure to 2 bar; sending the liquefied gas to storage; injecting the gaseous portion of the natural gas downstream the Joule-Thomson valve at -150 °C and 2 bar into the second main heat exchange cycle to help in the cooling process described above, increasing its temperature from -150 °C to -60 °C; and subsequently the gas at -60 °C (212,213) is injected into the regeneration heat exchange stage to help in the cooling process described above.