Reverse circulation hammer spline arrangement improvements

This invention relates to a down-the-hole hammer drill, and has particular application (but need not be limited) to a reverse-circulation (RC) down-hole face sampling hammer drill. Delivery of fluid to a cutting face is tailored to the design of the cutting face to improve flushing of the cutting fa...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	BEIERER, PHILIPP, HILL, RAYMOND
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:	This invention relates to a down-the-hole hammer drill, and has particular application (but need not be limited) to a reverse-circulation (RC) down-hole face sampling hammer drill. Delivery of fluid to a cutting face is tailored to the design of the cutting face to improve flushing of the cutting face. An associated drill bit and drive sub are also disclosed.