APPARATUS AND METHOD FOR MILLING THROUGH A WHIPSTOCK IN A WELLBORE

APPARATUS AND METHOD FOR MILLING THROUGH A WHIPSTOCK IN A WELLBORE

A method for milling within a whipstock set in a wellbore comprises introducing a mill guide (30) having a channel therethrough into the wellbore above the whipstock. The mill guide is moved into stabilising contact with the whipstock and a mill is guided by the mill guide to mill down into the whip...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MCCLUNG, GUY, LAMONT, III, ROBERTSON, ROBERT, EUGENE, LANGFORD, DALE, ELLIOTT, JOHANTGES, PAUL, JEFFREY, DURST, DOUGLAS GLENN, CARTER, THURMAN B, BLIZZARD, WILLIAM, ALAN, JR, PLEASANTS, CHARLES, W
Format: Patent
Sprache:eng ; fre ; ger
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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Beschreibung
Zusammenfassung:A method for milling within a whipstock set in a wellbore comprises introducing a mill guide (30) having a channel therethrough into the wellbore above the whipstock. The mill guide is moved into stabilising contact with the whipstock and a mill is guided by the mill guide to mill down into the whipstock. The mill has at least a portion thereof in contact with the mill guide while milling into the whipstock.