BOPs, Closing Units & Well Control Services

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 GDN provides expert repairs, rebuilds, and maintenance services for blowout preventers (BOPs), closing units, and well control equipment used across drilling, 

completion, and well intervention operations. 

When it comes to pressure control and emergency response, your equipment must work flawlessly — every time. That’s why GDN offers highly specialized service for mission-critical components that manage wellbore integrity.

• Structural weld repair (ram and annular bodies, bonnets, flanges)
   
• Seat resurfacing, seal replacement, and component rebuilds
   
• Crack detection, pressure testing, and prep for third-party certification

• Field pickup and delivery available
   

• Hydraulic troubleshooting and system flushing
   
• Bladder or piston-type accumulator repair and recharge
   
• Hose replacement, valve retrofits, and manifold reconfiguration
   
• Control panel testing and safety valve servicing
   

• Retrofit older units with modern fail-safe valves, pressure sensors, and new control logic
   
• Update BOP stack configurations to meet evolving well program specs
   
• Custom bracketry and skids for integration with different rig setups
   
• Support for surface and wellhead installations (land or workover rigs)