Described embodiments include a system and a method. A described system includes a pipeline system that transports flowable natural gas hydrate slurries. The pipeline system including a transportation conduit configured to contain natural gas hydrate slurry flowing from a first geographic location to a second geographic location. The natural gas hydrate slurry includes a natural gas hydrate and a liquid. A removal system is configured to withdraw a portion of the liquid from the flowing natural gas hydrate slurry. The pipeline system includes a cooling system configured to cool the withdrawn liquid to a target temperature range predicted to provide a selected stability of the natural gas slurry during transit of the natural gas slurry over at least a portion of the distance from the first geographic location to the second geographic location. A mixing system is configured to reintroduce the cooled withdrawn liquid into the flowing natural gas slurry.