Chain drive system

A downhole tractor is provided that includes a motor, at least one rotatable screw powered by the motor, and a chain engageable with the at least one rotatable screw, whereby rotation of the at least one rotatable screw moves the chain.

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Bibliographische Detailangaben
Hauptverfasser:	WADE DUPREE, FALK W DOERING
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIGHTING MECHANICAL ENGINEERING MINING MOTOR VEHICLES OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRAILERS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A downhole tractor is provided that includes a motor, at least one rotatable screw powered by the motor, and a chain engageable with the at least one rotatable screw, whereby rotation of the at least one rotatable screw moves the chain.