id	keyword
ajst-27511	spacing
ajst-27511	 
ajst-27511	stress
ajst-27511	fracture
ajst-27511	cluster
ajst-27511	production
ajst-27511	meters
ajst-27511	propagation
ajst-27511	gas
ajst-27511	field
ajst-27511	fracturing
ajst-27511	element