id	keyword
ajst-5921	cement
ajst-5921	cementing
ajst-5921	casing
ajst-5921	logging
ajst-5921	quality
ajst-5921	amplitude
ajst-5921	wave
ajst-5921	evaluation
ajst-5921	density
ajst-5921	time
ajst-5921	sound
ajst-5921	formation