4. Wells
  5. Processes
  6. Perforating, weakening, bending or separating pipe at an...

Donald V. Umphries

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Decentralized casing hole puncher

Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent

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Decentralized casing hole puncher

Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Downhole charge carrier

Ammunition and explosives – Blasting – Patterned blasting
Patent

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Downhole charge carrier

Ordnance – Well perforators
Patent

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