DRILL BIT ASSEMBLY COMPRISING AN EXPANDABLE RETAINING SLEEVE

DRILL BIT ASSEMBLY COMPRISING AN EXPANDABLE RETAINING SLEEVE

A hammer drill assembly for coupling to a drill string wherein the drill bit is releasably attached to the driver sub via a retaining sleeve; wherein the retaining sleeve comprises a body that extends between a ring at its forward end and a plurality of tips at its rearward end. Also, methods of att...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: BRUANDET, Olivier, KOSKINEN, Jouni
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A hammer drill assembly for coupling to a drill string wherein the drill bit is releasably attached to the driver sub via a retaining sleeve; wherein the retaining sleeve comprises a body that extends between a ring at its forward end and a plurality of tips at its rearward end. Also, methods of attaching and detaching a drill bit from the rest of the assembly.