Abstract: System, assemblies, and methods for cathodic protection of one or more components of an oil and gas well may include an anode comprising an anodic coating on a surface of at least one first component of the oil and gas well. A cathode may comprise at least one second component of the oil and gas well, where the anode is configured to at least partially inhibit corrosion of the cathode.

Abstract: The present disclosure relates to a method for coating a coiled sucker rod, the method comprising: (a) transferring the coiled sucker rod from a first reel to a thermal spray metal gun system with a conveyance system; and (b) applying a thermal spray metal coating on the coiled sucker rod with a thermal spray metal gun system to form a thermal spray metal coated coiled sucker rod.

Abstract: Embodiments of a wellhead assembly have a tubular body with a removable bottom cap to house a tubing rotator comprising a multi-enveloping worm gear assembly which provides sufficient torque to rotate tubing strings in deep and/or deviated wellbores. The bottom cap is supported on a wellhead having a dognut for supporting a production string therefrom in a wellbore. The bottom cap rotatably supports a mandrel and multi-enveloping worm wheel thereon, the mandrel being connected to the dognut and tubing string for co-rotation therewith. The tubular body supports a multi-enveloping worm for engagement with the worm wheel when the tubular body is lowered axially onto the bottom cap. When the tubular body and worm are lifted axially from the bottom cap, the worm wheel and mandrel are exposed for repair or replacement without need to pull the production string from the wellbore.

Abstract: Embodiments of a wellhead assembly have a tubular body with a removable bottom cap to house a tubing rotator comprising a multi-enveloping worm gear assembly which provides sufficient torque to rotate tubing strings in deep and/or deviated wellbores. The bottom cap is supported on a wellhead having a dognut for supporting a production string therefrom in a wellbore. The bottom cap rotatably supports a mandrel and multi-enveloping worm wheel thereon, the mandrel being connected to the dognut and tubing string for co-rotation therewith. The tubular body supports a multi-enveloping worm for engagement with the worm wheel when the tubular body is lowered axially onto the bottom cap. When the tubular body and worm are lifted axially from the bottom cap, the worm wheel and mandrel are exposed for repair or replacement without need to pull the production string from the wellbore.

Abstract: A system comprises a progressive cavity pump including a helical rotor disposed within a mating stator. In addition, the system comprises a rod string having a longitudinal axis, a first end, and a second end coupled to the rotor. Further, the system comprises a rotation retarding device coupled to the first end of the rod string, wherein the rotation retarding device retards the rotation of the rod string relative to the stator. Still further, the system comprises a lifting device coupled to the rotation retarding device, wherein the lifting device is operable to apply an axial lifting force to the rotor.