This seal prevents any fluids from migrating between formations - - either from water flowing down into the coal or gas migrating up to a shallower aquifer.
(This seal; prevents; any fluids; from migrating between formations) (any fluids; from migrating; between formations) (water; flowing; down; into the coal or gas)
This seal any fluids water
prevents from migrating flowing
any fluids from migrating between formations
between formations
down into the coal or gas