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Metal rollers for use with cables, rods and strings in the oil and gas well industry; Metal rollers for use with cables, rods and strings on a downhole apparatus for reducing friction in an oil or gas well
7
Motorized or mechanized well intervention tools having friction reducing devices for the purpose of lowering and raising items in and out of wells, namely, downhole conveyors comprising a metal body having at least one roller, the roller being motorized or mechanized to impart a driving force and reduce friction; motorized or mechanized well intervention roller tools for lowering and raising items in and out of wells, namely, downhole conveyors comprising a metal body having at least one roller, the roller being motorized or mechanized to impart a driving force; motorized or mechanized well intervention tools having wheels, rollers, tracks or runners for reducing friction of a string during the lowering and raising of items in and out of an oil or gas well, namely, downhole conveyors comprising a metal body having at least one wheel, roller, track or runner, the wheel, roller, track or runner being motorized or mechanized to reduce friction; parts and fittings for the aforesaid goods, namely, non-metal rollers and roller subs for the aforementioned downhole tubes, tubular jars, namely, downhole tubular tools that can release stored compressive or tensile energy so as to generate a shock, linear bearings for machines; motorized or mechanized wireline subs, namely, well intervention sub-assemblies for use with wirelines; maintenance kits and redress kits for the foregoing, namely, kits comprising sealing joints, bearings, wheels, rollers, runners and motors, sold as a unit
12
Locomotives for use in pipelines and in oil and gas wells; land vehicles for downhole and pipeline use; parts and fittings for the aforesaid goods, namely, wheels, swivels for coupling locomotives and land vehicles to downhole tools and strings of tools; maintenance kits and redress kits for the foregoing, namely, kits comprising bearings, wheels, rollers, tracks, runners and motors, sold as a unit
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