LandOfFree - US Patents - Listing for Boring or penetrating the earth,Boring with explosion in inaccessible hole,Independent firing of plural charges

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Control system for borehole tools

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Downhole activation system that assigns and retrieves...

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Explosively actuated well tool having improved disarmed configur

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

High temperature selective fire perforating gun and switch there

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Method for retaining debris in a perforating apparatus

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Secure activation of a downhole device

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Selective firing system

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Single-wire selective perforation system having firing safeguard

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Single-wire selective performation system

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Technique for disarming and arming electrically fireable explosi

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Independent firing of plural charges

Wireless perforating gun initiation