About: drill string

Premodifier: drill
Head noun: string

Same concepts
http://dbpedia.org/resource/Drill_string

Broader concepts

label	provenance	confidence
tubular string	isap:385333456	0.750306
present invention	isap:419848001	0.685203
downhole tool	isap:495682094	0.675510
drilling tool	isap:495682087	0.650613
tubular member	isap:395553678	0.628359
tubular goods	isap:115139337	0.621771
tool	isap:495682085	0.617760
string	isap:385333450	0.568375
parameter	isap:425569644	0.516643
conduit	isap:445300905	0.474401
equipment	isap:424479757	0.472786
assembly	isap:99715511	0.419540
pipe	isap:496072065	0.385565
drilling	isap:106273827	0.375390

Narrower concepts

label	provenance	confidence
drill collar	isap:385935084	0.763022
drill pipe	isap:308511055	0.648234
bottom hole	isap:305458648	0.516535
drill pipe section	isap:268702666	0.515158
casing	isap:397337386	0.401362
drill	isap:164721300	0.320568
embodiment	isap:254128427	0.279644
kelly	isap:155787721	0.278865
aspect of the invention	isap:398603686	0.243367
extrapolation	isap:53620125	0.222297