During in drilling,to inclining prevention and directional well construction, need to use stabilizer, because of departed characteristic of stabilizer structure , usually cause to bit freezing.no matter which a reason (hole cleaning, falling objects, desilting, borehole all sloughing) cause bit freezing ,last step solution relies on milling work to release. As for characteristic departed stabilizer full pack and existence of wear-resisting layer on stabilized zone take big difficulties to milling work.
BDW reducing stabilizer solve bit freezing which is caused hole shrinkage ,and because of feature of reducing ,once happen to other type of bit freezing, also leave enough construction zone for milling work. This using effect of stabilizer is better than other bit freezing .

Type	Connection	Max Working O.D. (in)	Static O.D. at tripping  (mm)	Max Tension (KN)	Max Torsion (KN.m)
BDW311	6 5/8REG	12-1/4″	285	2000	45
BDW245	NC56	9-5/8″	220	1700	42
BDW216	NC50	8-1/2″	200	1500	38
BDW165	NC40	6-1/2″	151	1100	30
BDW152	NC38	6″	140	850	25