�  NOV Grant Drill Pipes-cutting tool, drill bit

NOV Grant Drill Pipes-cutting tool, drill bit

Cutting Tool

Drill Bits

Oil Drill Bits

Mining Bits

Drill Collars

Drill Pipes

Drilling Tools

Bit Coals

About NOV Grant H2S Resistant Drill Pipe

Because aggressive wells may expose drill pipe and BHA components to severe stress conditions as well as H2S environments, there is a need to provide maximum mechanical performance without sacrificing sour service resistance. This requirement demands material properties from two opposite sides of the spectrum – high strength to improve mechanical properties and low hardness to resist sulfide stress cracking (SSC).

Material enhancement

• Proprietary grades for H2S environments

• Proprietary chemical composition

• Improved heat treatment processes

• Optimum fracture toughness

• Controlled yield strength and restricted hardness

• Reduced carbon content


 

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