000			00692nab a2200169 4500
005			20260520004141.0
008			260224s xxu
245	0	0	_aNew advancements made in drill bit technology
270			_a12/09/06 ; 22/02/2006
300			_a5 p.
520			_aBit designers have made further strides in balancing, computer modeling, cutting structures and bearing and seal systems, all with an eye toward improving performance and efficiency, thereby lowering drilling costs further.
773	0		_tWorld Oil _gVol. 226, no. 11 (nov. 2005) ; p. 67-71
942			_cARTICULO
100	1		_aLord, Ron _947861
650		0	_aTrépanos _92418
999			_c178751 _d178751