Gas giant refinery

A gas giant refinery is a series of orbital megastructures that would be suspended in the atmosphere of any gas giant such as Jupiter or Saturn. Their purpose would be to harvest large amounts of hydrogen / helium or other gases from the planet to prepare the raw elements for transportation elsewhere. The refineries would be floating aerostats and orbital vehicles would collect raw gasses from them to transport to the rest of the solar system to be used as a vital energy source.