Method of joining coiled sucker rod in the field

Details Method of joining coiled sucker rod in the field Method of joining coiled sucker rod in the field

2007-06-26

2007-06-26

Edmondson, Lynne R. (Department: 1725)

Metal fusion bonding

Process

Specific mode of heating or applying pressure

C228S232000

Reexamination Certificate

active

10666138

ABSTRACT:
A method of joining coiled sucker rod in the field. In its most basic form, the method includes a first step of placing abutting ends of sucker rod in face to face relation. A second step involves positioning a gas burner in proximity to the abutting ends of sucker rod and heating the abutting ends with a hydrocarbon gas flame while applying axial pressure to force the abutting ends together. A third step involves continuing heating and applying pressure until a weld is formed with a bulge formed above the weld which is at least one third of the diameter of the welded rod. A fourth step involves keeping the pressure constant until the weld cools.

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