Downhole rotational lock mechanism

The subject matter of this specification can be embodied in, among other things, a method that includes a downhole rotational lock mechanism including a tubular housing having a longitudinal bore with an internal wall. A driving gear is disposed in the longitudinal bore of the tubular housing and ha...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KHAPARDE ASHISH PRAFULLA, SONAR SANDIP SATISH, THAKUR DIPENDER RAVINDRA
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
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Beschreibung
Zusammenfassung:	The subject matter of this specification can be embodied in, among other things, a method that includes a downhole rotational lock mechanism including a tubular housing having a longitudinal bore with an internal wall. A driving gear is disposed in the longitudinal bore of the tubular housing and has a peripheral edge secured to the internal wall of the longitudinal bore of the tubular housing. The driving gear has an upper portion including a plurality of gear teeth arranged around a central longitudinal bore through the driving gear. A driven gear is movably disposed in the longitudinal bore of the tubular housing, and has a central longitudinal bore and a lower portion including a plurality of gear teeth. An output drive shaft is disposed longitudinally in the longitudinal bore of the tubular housing and in the longitudinal bore of the driven gear.