CARRIER FOR HARDWARE TRANSPORTING TO HORIZONTAL WELL Russian patent published in 2009 - IPC E21B23/14 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to horizontal and high-inclined oil and gas wells surveying, specifically to carriers for hardware transportation to the well. Carrier contains electric motor driven, geared-down cylindrical body, wedge bearings and propeller in the form of wheels with rounded radius equal to surveyed well radius mounted spin on spindles of wedge bearings. Besides carrier is supplied with centraliser wheels mounted on lever shaft pivotally connected to the body and spring-loaded centraliser plunger furnished with stop block interworking with propeller plunger. Wedge bearings are overall length offset, fitted with spur gear sectors and pivotally connected by levers with spring-loaded propeller plunger. Herewith each wheel is connected to down gear through worm gear one shaft of which is supplied with lead screw and sliding nut groove of which enters stopper boss mounted in the body.

EFFECT: higher performance reliability.

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