Electric tractors were originally designed to pull wire line cables downhole in horizontal or steeply angled wells.
The small surface footprint required to operate tractors has meant that they are now often being used for operations that traditionally employed coiled tubing or a workover rig, such as drilling plugs and clean casings. The utilisation of electric tractors is expected to increase as new technologies develop, driving new applications.
Well intervention operations with a tractor often use a downhole electric motor, below the tractor, to drive milling tools. However the power supplied by the tractor/motor combination is limited, compared to conventional means. As a result, the system must be optimized to deliver a regular supply of power to the mill. This can be difficult as downhole conditions can be hard to read and indications of stalling and slip and stick can be missed.
Using NeoTork between the electric motor and the milling bit ensures a smooth transfer of load to the bit. NeoTork compensates for any peaks in torque or sudden tractor movements. NeoTork protects the tractor and motor components from damage due to inefficient milling. As a result, milling is faster and more effective, increasing the opportunities to use tractors in applications previously considered unviable.