O’Donnell Consulting Engineers investigated the cause of an accident due to a failed threaded closure on a wellhead. Through metallurgical evaluations, material testing, and engineering analysis, it was determined that the cast iron nut had failed due to fatigue. Design changes were then recommended.

 
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Failure Analysis & Redesign of a Fracking Pump
Failure Analysis & Redesign Of an Oil/Gas Threaded Joint Casing
 
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