TORQUE TRANSMISSION JOINT WITH SHAPE-MEMORY ALLOY CLADDING FOR A BOTTOM-HOLE ASSEMBLY

A method and apparatus for transmitting torque in a downhole assembly. The apparatus includes a driver sub with an annular body defining an internal surface, a portion of the internal surface of the driver sub defining a contact surface; a driveshaft extending within the driver sub, the driveshaft i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	POYYARA Ragi Lohidakshan
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A method and apparatus for transmitting torque in a downhole assembly. The apparatus includes a driver sub with an annular body defining an internal surface, a portion of the internal surface of the driver sub defining a contact surface; a driveshaft extending within the driver sub, the driveshaft including an elongated body defining an external surface, a portion of the external surface of the driveshaft defining a contact surface; a first insert disposed between the contact surfaces of the driver sub and the driveshaft, respectively, the first insert including an annular body defining internal and external surfaces, a portion of the internal surface of the first insert defining an inside contact surface, and a portion of the external surface of the first insert defining an outside contact surface; and a first shape-memory alloy cladding bonded to the inside contact surface of the first insert.