E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/28
E21B 17/10 (2006.01) E21B 10/30 (2006.01)
Patent
CA 1093064
ABSTRACT OF THE DISCLOSURE An upper stabilizer and a lower reamer are mounted on an integral or one-piece body adapted to be connected in a tubular drilling string for drilling well bores.
335381
Mason Keith J.
Swersky Gerald S.
Christensen Inc.
Johnson Douglas S. Q.c.
LandOfFree
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