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US 4,858,688 AGranted
Sucker rod guide
OwnerBilly J. Edwards, Jimmy A. Starksinventors
Life of this patent
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OwnerBilly J. Edwards, Jimmy A. Starksinventors
Estimating the term…
A sucker rod guide for mounting on a sucker rod in multiple, spaced units and preventing, or at least minimizing, contact between the sucker rod and the tubing which encloses the sucker rod. In a preferred embodiment, the sucker rod guide is characterized by an extruded plastic material having an ultra-high density and a coefficient of friction when wet which is lower than that of metal, to increase the overall pumping efficiency of oil wells. In a most preferred embodiment of the invention, the sucker rod guide is constructed of a self-lubricating, high-density, extruded polyethylene plastic. The sucker rod guide includes a longitudinal, grooved bore which is preferably undersized with respect to the sucker rod upon which the sucker rod guide is mounted and a tapered body slot which communicates with the bore for inserting the sucker rod guide on a sucker rod at a desired location. Multiple units of the sucker rod guide are attached to the sucker rod string in spaced relationship, in order to space the sucker rod string from the tubing, lubricate the reciprocating or spinning action of the sucker rod string and prevent or minimize sucker rod and tubing wear.
A sucker rod guide for mounting on a sucker rod and spacing the sucker rod from the tubing in an oil well, comprising a generally cylindrically-shaped, extruded, ultra-high density polyethylene body having a substantially smooth outside surface;
A sucker rod guide for mounting on a sucker rod and spacing the sucker rod from the tubing in an oil well, comprising a generally cylindrically-shaped, extruded polyethylene body having an ultra-high density and a substantially smooth outside surface;
Dependencies are inferred from the claim text.