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US 12,709,949 B2Granted
Sinker bar with centralizer
AssigneesPercheron Manufacturing, 360 Research Labs, LLC
InventorsMark A. Nease, Clois L. Montague
Life of this patent
Estimating the term…
Abstract
A sinker bar with centralizer includes a cylindrical body having an outer surface and opposing first and second ends, one or more grooves defined in the outer surface between the first and second ends and thereby defining a grooved portion of the body, and a centralizer attached to the body at the grooved portion and encapsulating the one or more grooves, the centralizer providing opposing first and second centralizer ends extending axially beyond opposing axial ends of the grooved portion.
Claims20
A sinker bar, comprising:
- a cylindrical body having an outer surface and opposing first and second ends, the outer surface exhibiting a first diameter;
- one or more grooves defined in the outer surface between the first and second ends and thereby defining a grooved portion of the body, at least one of the one or more grooves exhibiting a second diameter smaller than the first diameter;
- and
- a centralizer attached to the body at the grooved portion and encapsulating the one or more grooves, the centralizer providing opposing first and second centralizer ends extending axially beyond opposing axial ends of the grooved portion and terminating at the outer surface.
1 more element
A sinker bar, comprising:
- a cylindrical body having an outer surface and opposing first and second ends;
- one or more grooves defined in the outer surface between the first and second ends and thereby defining a grooved portion of the body;
- and
- a centralizer attached to the body at the grooved portion and encapsulating the one or more grooves, the centralizer providing opposing first and second centralizer ends extending axially beyond opposing axial ends of the grooved portion,
- wherein the one or more grooves includes an elongated groove extending parallel to a longitudinal axis of the body, and
- wherein a length of the elongated groove is larger than a width of the elongated groove.
3 more elements
A sinker bar, comprising:
- a cylindrical body having an outer surface and opposing first and second ends;
- one or more grooves defined in the outer surface between the first and second ends and thereby defining a grooved portion of the body;
- and
- a centralizer attached to the body at the grooved portion and encapsulating the one or more grooves, the centralizer providing opposing first and second centralizer ends extending axially beyond opposing axial ends of the grooved portion,
- wherein the one or more grooves each exhibit a hemispherical cross-section.
2 more elements
A well system, comprising:
- a pumping unit;
- a wellhead arranged adjacent the pumping unit and above a wellbore;
- a rod string operatively coupled to the pumping unit and extending through the wellhead into the wellbore, the rod string including a plurality of sucker rods, a submersible pump arranged at a distal end of the plurality of sucker rods, and a sinker bar interposing the plurality of sucker rods and the submersible pump, the sinker bar including:
- a cylindrical body having an outer surface and opposing first and second ends the outer surface exhibiting a first diameter;
- one or more grooves defined in the outer surface between the first and second ends and thereby defining a grooved portion of the body, at least one of the one or more grooves exhibiting a second diameter smaller than the first diameter;
- and
- a centralizer attached to the body at the grooved portion and encapsulating the one or more grooves, the centralizer providing opposing first and second centralizer ends extending axially beyond opposing axial ends of the grooved portion and terminating at the outer surface.
4 more elements
Dependencies are inferred from the claim text.