US2017253977A1PendingUtilityA1

Method for enhancing the operational life of production parts in the oil and gas industry

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Assignee: NEW MEXICO JUNIOR COLLEGE RES FOUND LLCPriority: Apr 16, 2014Filed: May 17, 2017Published: Sep 7, 2017
Est. expiryApr 16, 2034(~7.7 yrs left)· nominal 20-yr term from priority
Inventors:Victor K. ChampagneGregory Nicolas VigilanteChristopher P. MulliganEdward John TroianoChristopher HumistonDavid C. Smith
C23C 24/04
58
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Claims

Abstract

A method for improving the operational life of production parts, such as steel sucker rods, couplings, pump parts, and tubes, for use in underground recovery or production of oil and gas, includes coating the steel production parts with a layer of corrosion resistant alloy (CRA) to reduce a loss rate of the steel by improving corrosion resistance and mitigate pitting. In one embodiment, the corrosion resistant alloy is a nickel-based alloy. In other embodiments, the steel production parts can either be coated with an epoxy/phenolic layer, or coupled with a sacrificial anode. The coating process can implemented by any one of the following processes: cold spray coating; electroless corrosion resistant coating; flow forming; and electrochemical machining.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for improving the operational life of production parts for use in underground oil recovery or production, comprising:
 coating the production parts with a layer of corrosion resistant alloy to reduce a loss rate of the production part by improving corrosion resistance and mitigate pitting.   
     
     
         2 . The method of  claim 1 , wherein the corrosion resistant alloy is a nickel based alloy. 
     
     
         3 . The method of  claim 2 , wherein coating the production parts includes using a cold spray coating process. 
     
     
         4 . The method of  claim 2 , wherein coating the production parts includes using an electroless, corrosion resistant coating process. 
     
     
         5 . The method of  claim 2 , wherein coating the production parts includes using a flow forming process. 
     
     
         6 . The method of  claim 2 , wherein coating the production parts includes using an electrochemical machining. 
     
     
         7 . The method of  claim 2 , wherein the production parts includes any one or more of: a steel sucker rod, couplings, pump parts, and tubes. 
     
     
         8 . The method of  claim 2 , wherein said production part is comprised of steel. 
     
     
         9 . The method of  claim 2 , wherein said production part is comprised of aluminum. 
     
     
         10 . A method for improving the operational life of a production part for use in underground oil recovery or production comprising:
 coating the production part with a layer of epoxy/phenolic to reduce a loss rate of the production part by improving corrosion resistance and mitigate pitting.   
     
     
         11 . A method for improving the operational life of a production part for use in underground oil recovery or production comprising:
 coupling the production part(s) with a sacrificial anode to reduce a loss rate of the steel production parts by improving corrosion resistance and mitigate pitting.   
     
     
         12 , A corrosion resistant production part comprising:
 a production part; and   a layer of corrosion resistant alloy to reduce a loss rate of the steel production part by improving corrosion resistance and mitigate pitting.   
     
     
         13 . The corrosion resistant production part of  claim 12 , wherein the corrosion resistant alloy is a nickel based alloy. 
     
     
         14 . The corrosion resistant production part of  claim 12 , wherein the corrosion resistant alloy is stainless steel. 
     
     
         15 . The corrosion resistant production part of  claim 12 , wherein the production part includes any one or more of: a steel sucker rod, couplings, pump parts, and tubes. 
     
     
         16 . A corrosion resistant production part comprising:,
 a production part; and   a corrosion resistant nickel based alloy coating.   
     
     
         17 . The corrosion resistant production part of  claim 16 , wherein the production part includes any one or more of: a steel sucker rod, couplings, pump parts, and tubes. 
     
     
         18 . The corrosion resistant production part of  claim 16 , wherein the production part is comprised of steel. 
     
     
         19 . A production part assembly having a corrosion resistant coating, the production part assembly comprising: 
       a production part; and
 a built-up corrosion resistant alloy layer adhering to the production part, the corrosion resistant alloy layer having been deposited onto the production party by first spraying a first quantity of powdered alloy particle onto a prepared production part using a jet of gas, the gas being at a temperature below the fusing temperature of the metal particles, and the jet of gas having a velocity sufficient to cause the alloy particles to merge with one another upon impact with the production part and with one another so as to form an initial continuous alloy coating adhering to the surface of the production part, and then applying successive quantities of alloy particles over the initial continuous alloy coating using the jet of gas so as to form a coating incorporating the initial continuous alloy as its base and having an overall thickness that is a predetermined thickness. 
 
     
     
         20 . The production part assembly of  claim 19 , wherein the built-up corrosion resistant alloy comprises a nickel based alloy.

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