E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/06 (2006.01)
Patent
CA 2525371
A method of and system for directional drilling alternate between rotary drilling and sliding with the bit remaining in continuous contact with the bottom of the bore hole.
Système et procédé de forage directionnel alternant entre un forage rotatif et un forage glissant, le trépan restant en contact continu avec le fond du trou de forage.
Haci Marc
Maidla Eric E.
Mbm Intellectual Property Law Llp
Noble Drilling Services Inc.
Smith International Inc.
LandOfFree
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