DRILLING BIT AT CASING STRING

FIELD: soil or rock drilling.SUBSTANCE: invention relates to drilling equipment, in particular, to well drilling devices made from drilled materials and can be used for drilling on casing string. Drill bit for drilling on casing string includes body with holes, blades with PDC cutters for destructio...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Akhmadishin Farit Foatovich, Iagafarov Albert Salavatovich
Format:	Patent
Sprache:	eng ; rus
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
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