Sucker rod

Abstract

The disclosure relates to the treatment of rods made of metal, particularly to the method of reclamation of used standard length rods, such as pump rods already used in the mechanical deep-pumping extraction of oil, as well as to the product made with the help of the mentioned method. The method of remanufacturing of standard length rods includes the reheating of the rod body to a temperature favorable for the plastic treatment of the rod such as plastic deformation of the rod body under pressure. Such methods allow for the reclamation of rods of the desired geometric form and enhancement of the mechanical properties of the remanufactured rod. The technical outcome of the claimed invention consists in the reclamation of rods of the desired geometric form and enhancement of the mechanical properties of the remanufactured rod.

1 . A reconditioned steel rod produced by the method comprising the steps of:
 a. obtaining a used sucker rod having a diameter and a length;   b. removing contaminates from the surface of the sucker rod;   c. performing a non-visual inspection of the used sucker rod to determine if the sucker rod is amenable to reconditioning;   d. categorizing the sucker rod into a steel class;   e. heating the rod to a temperature between about 900° C. and about 1300° C. until the rod is able to undergo plastic deformation;   f. shaping the rod using a pressure machine at a temperature wherein plastic deformation occurs;   g. cooling the rod; and   h. cutting the sucker rod into a desired length.   
     
     
         2 . The reconditioned steel rod of  claim 1 , wherein shaping the rod decreases the diameter of the rod by one standard size and increases the length of the rod. 
     
     
         3 . The reconditioned steel rod of claim of  claim 2 , wherein the rod has been subjected to shot peening. 
     
     
         4 . The reconditioned steel rod of  claim 3 , wherein the rod has been cut into a shorter rod and a pony rod. 
     
     
         5 . The reconditioned steel rod of  claim 4 , wherein end pieces have been forged to the shorter rod.