4. Boring or penetrating the earth
  5. Boring with explosion in inaccessible hole
  6. Firing chamber movable in bore relative to carrier or...
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Downhole activated process and apparatus for deep perforation of

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing chamber movable in bore relative to carrier or...
Patent

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Method and apparatus for penetrating subsurface formations

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing chamber movable in bore relative to carrier or...
Reexamination Certificate

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Perforating gun

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing chamber movable in bore relative to carrier or...
Patent

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Perforating gun

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing chamber movable in bore relative to carrier or...
Reexamination Certificate

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Through tubing perforating gun

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing chamber movable in bore relative to carrier or...
Reexamination Certificate

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Through-tubing perforating apparatus

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing chamber movable in bore relative to carrier or...
Patent

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Wave strip perforating system

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing chamber movable in bore relative to carrier or...
Patent

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