LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – With valve

Safety device for use on drilling rigs and process of running la

Boring or penetrating the earth – Boring with explosion in inaccessible hole – With bore condition firing control – or compensating means

Safety device to prevent premature firing of explosive well tool

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Safety mechanism for a raise drill

Boring or penetrating the earth – Boring with explosion in inaccessible hole – With bore condition firing control – or compensating means

Safety method and apparatus for a perforating gun

Boring or penetrating the earth – Boring with explosion in inaccessible hole – With bore condition firing control – or compensating means

Safety method and apparatus for a perforating gun

Boring or penetrating the earth – With tool drive prime mover or above-ground mechanical...

Safety stabilizer for auger

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing control mechanically actuated in bore

Safety switch for well tools

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal

Sampling apparatus and method

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal

Sampling device

Boring or penetrating the earth – With means movable relative to tool below ground to stop...

Sampling drill

Boring or penetrating the earth – Processes – Sampling of earth formations

Sampling isolator

Boring or penetrating the earth – With heating or cooling drilling fluid

Sampling method and sampler for gas hydrates by hole bottom...

Boring or penetrating the earth – With mechanical cleaner for bit or cutter element

Sampling tube cleaning device

Boring or penetrating the earth – Boring without earth removal

Sand control screen and installation method for wells

Boring or penetrating the earth – With tool shaft detail

Saver sub for a steering tool

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Scabbler bits

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Screen and bypass arrangement for LWD tool turbine

Boring or penetrating the earth – Processes

Screen apparatus and method

Boring or penetrating the earth – Processes

Screen placement method and apparatus