id	keyword
iogr-1370	gas
iogr-1370	recovery
iogr-1370	hydrogen
iogr-1370	injection
iogr-1370	storage
iogr-1370	reservoir
iogr-1370	production
iogr-1370	pressure
iogr-1370	figure
iogr-1370	cycle
iogr-1370	diffusion
iogr-1370	energy
iogr-1370	cushion