Continuous Composite Rod and Methods
AssigneeFiberod, Inc.
InventorRussell P. Rutledge, SR.
Life of this patent
Estimating the term…
Abstract
A continuous composite fiberglass sucker rod for connection between a pump and a pump drive has a rectangular cross section. End fittings having a rod receiving cavity are connected to the rod ends using a curable adhesive. The rod fitting is maintained in a vertical position with the cavity facing upwardly. The rod end portion is positioned in the cavity with the end at the bottom of the cavity. Curable adhesive is introduced into the cavity. A centralizer bushing is used to maintain alignment of the rod relative to the cavity. A portable heating device receives the fitting and rod end portion and enhances the curing process.
Claims22
A composite sucker rod for actuating a downhole pump, wherein the composite rod comprises a non-round cross section, comprising opposite sides separated a distance in a first direction defining a major dimension of said rod and opposite sides separated a distance in a second direction substantially perpendicular to the first direction defining a minor dimension of said rod wherein said major dimension of said rod is greater than said minor dimension of said rod.
11-16. (canceled)
A portable heating system for attaching a composite rod to an end connector, the system comprising:
- a composite fiberglass rod comprising an end;
- an end connector comprising a cavity, wherein the cavity comprises dimensions sufficient to accommodate the end of the composite fiberglass rod;
- a curable adhesive disposed within the cavity, wherein the curable adhesive binds to the composite fiberglass rod when cured for preventing separation of the composite fiberglass rod from the end connector;
- and
- a portable heating device comprising an opening and a heating member, wherein the opening comprises dimensions sufficient to accommodate the end fitting with the curable adhesive and the end of the composite fiberglass rod disposed therein, and wherein the heating member provides heat for evenly heating the end fitting to cure the curable adhesive.
A centralizer bushing for securing a sucker rod within an end fitting, said bushing comprising:
- a cylindrical body,
- a partial bore open at one end of said body defined by a cylindrical wall having an internal cylindrical surface, and a bottom surface,
- a longitudinal slot extending through said body including said cylindrical wall intersecting said bottom surface,
Dependencies are inferred from the claim text.