Corrosion resistant sucker rod

Abstract

A sucker rod for use in a subterranean well can include a martensitic stainless steel material with a chromium content in the range of 11.5 to 13%, and a carbon content in the range of 0.08 to 0.15%, and a length of the sucker rod being at least 60 meters. A method of producing a sucker rod for use in a subterranean well can include producing a martensitic stainless steel material of the sucker rod, the material including chromium in the range of 11.5 to 13%, and carbon in the range of 0.08 to 0.15%, heat treating the material, and winding the material for storage.

1 . A continuous sucker rod for use in a subterranean well, the continuous sucker rod comprising:
 a martensitic stainless steel material comprising chromium in the range of 11.5 to 13%, and carbon in the range of 0.08 to 0.15%, and   wherein a length of the continuous sucker rod being at least 60 meters.   
     
     
         2 . The sucker rod of  claim 1 , in which the material further comprises manganese in the range of 0.3 to 1.6%. 
     
     
         3 . The sucker rod of  claim 1 , in which the material further comprises silicon in the range of 0.15 to 0.6%. 
     
     
         4 . The sucker rod of  claim 1 , in which the material further comprises less than 0.025% phosphorous. 
     
     
         5 . The sucker rod of  claim 1 , in which the material further comprises less than 0.025% sulfur. 
     
     
         6 . The sucker rod of  claim 1 , in which the material further comprises molybdenum in the range of 0.02 to 0.10% 
     
     
         7 . The sucker rod of  claim 1 , in which the material further comprises at least one of the group consisting of vanadium, titanium and niobium. 
     
     
         8 . The sucker rod of  claim 1 , in which the material further comprises vanadium in the range of 0.03 to 0.05%. 
     
     
         9 . The sucker rod of  claim 1 , in which the material further comprises titanium in the range of 0.012 to 0.015%. 
     
     
         10 . The sucker rod of  claim 1 , in which the material further comprises niobium in the range of 0.02 to 0.05%. 
     
     
         11 . The sucker rod of  claim 1 , in which the material further comprises approximately 0.15% nickel. 
     
     
         12 . The sucker rod of  claim 1 , in which the material further comprises additions of nickel and copper. 
     
     
         13 . The sucker rod of  claim 12 , in which the additions of nickel and copper comprise approximately 0.30% copper and approximately 0.20% nickel. 
     
     
         14 . A method of producing a continuous sucker rod for use in a subterranean well, the method comprising:
 producing a martensitic stainless steel material of the continuous sucker rod, the material comprising chromium in the range of 11.5 to 13%, and carbon in the range of 0.08 to 0.15%;   heat treating the material; and   winding the material for storage.   
     
     
         15 . The method of  claim 14 , in which the martensitic stainless steel material producing comprises shaping the material while a length of the material is at least 60 meters. 
     
     
         16 . The method of  claim 14  in which the material further comprises less than 0.025% phosphorous. 
     
     
         17 . The method of  claim 14  in which the material further comprises less than 0.025% sulfur. 
     
     
         18 . The method of  claim 14 , in which the material further comprises molybdenum in the range of 0.02 to 0.10% 
     
     
         19 . The method of  claim 14 , in which the material further comprises at least one of the group consisting of vanadium, titanium and niobium. 
     
     
         20 . The method of  claim 14 , in which the heat treating comprises hardening the material by heating to a temperature of at least a martensite transformation temperature for the material, then allowing the material to cool, and then tempering the material. 
     
     
         21 . The method of  claim 20 , further comprising shaping the material after the heating and prior to the allowing the material to cool. 
     
     
         22 . The method of  claim 14 , further comprising fabricating connections and joining sections of the sucker rod at a field location. 
     
     
         23 . A continuous sucker rod produced by the method of  claim 14 .