US2015258628A1PendingUtilityA1

Friction stirring and its application to drill bits, oil field and mining tools, and components in other industrial applications

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Assignee: SMITH INTERNATIONALPriority: May 21, 2004Filed: Jan 16, 2015Published: Sep 17, 2015
Est. expiryMay 21, 2024(expired)· nominal 20-yr term from priority
Inventors:Richard A. FlakScott M. PackerRussell J. SteelMonte RussellBrian Taylor
E21B 31/107B23K 20/129E21B 17/1078C23C 8/60E21B 17/16E21B 10/22B23K 20/002B23K 20/122B23K 20/1225B23K 20/128E21B 10/00E21B 10/26
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Claims

Abstract

A method of processing a downhole tool includes friction stirring at least a portion of a steel surface of the downhole tool.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for processing a downhole tool, comprising:
 friction stirring at least a portion of a steel surface of a downhole tool.   
     
     
         2 . The method of  claim 1 , further comprising:
 heat treating at least a portion of the downhole tool.   
     
     
         3 . The method of  claim 1 , wherein the friction stirring comprises welding two components together. 
     
     
         4 . The method of  claim 1 , wherein the friction stirring comprises stirring a first additive component into the portion of the steel surface. 
     
     
         5 . The method of  claim 4 , wherein the additive component comprises at least one of tungsten carbide, silicon carbide, aluminum oxide, cubic boron nitride, or diamond. 
     
     
         6 . The method of  claim 4 , further comprising friction stirring a second additive component into a portion of the steel at a depth less than the first additive component. 
     
     
         7 . The method of  claim 1 , wherein the portion of the steel surface comprises a wear area on the surface of the downhole tool. 
     
     
         8 . The method of  claim 1 , wherein the portion of the steel surface comprises a fluid erosion area on the surface of the downhole tool. 
     
     
         9 . The method of  claim 1 , wherein the downhole tool comprises a drill bit. 
     
     
         10 . The method of  claim 1 , wherein the downhole tool comprises a hole opener. 
     
     
         11 . The method of  claim 1 , wherein the downhole tool comprises a stabilizer. 
     
     
         12 . The method of  claim 1 , wherein the downhole tool comprises a reamer. 
     
     
         13 . The method of  claim 1 , wherein the downhole tool comprises a downhole motor. 
     
     
         14 . The method of  claim 1 , wherein the downhole tool comprises a drill collar 
     
     
         15 . The method of  claim 1 , wherein the downhole tool comprises a sub. 
     
     
         16 . The method of  claim 1 , wherein the downhole tool comprises a jar.

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