A method of and system for directional drilling alternate between rotary drilling and sliding drilling with the bit remaining in continuous contact with the bottom of the bore hole.
US Patent 07096979 Continuous on-bottom directional drilling method and systemUS Patent 7096979 Continuous on-bottom directional drilling method and system
Infobox
Patent Number
0709697900
Patent Number
709697900
Edits on 22 May, 2023
"Remove website redirecting to Patent Public Search front page"