4. Boring or penetrating the earth
  5. Boring with explosion in inaccessible hole
  6. With wall engaging packer or anchor
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Well completion method and apparatus

Boring or penetrating the earth – Boring with explosion in inaccessible hole – With wall engaging packer or anchor
Patent

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Well perforating gun

Boring or penetrating the earth – Boring with explosion in inaccessible hole – With wall engaging packer or anchor
Patent

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