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

Boring or penetrating the earth – Processes – Chemical reaction with earth formation or drilling fluid...

Product and method for treating well bores

Boring or penetrating the earth – Processes – Boring with specific fluid

Production process for manufacturing low molecular weight water

Boring or penetrating the earth – Boring by directly applying heat to fluidize or comminute

Profile melting-drill process and device

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector

Profiled body roller-reamer stabilizer

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Profiled element for rotary drilling equipment and drill rod...

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Profiled element for rotary drilling equipment and...

Boring or penetrating the earth – Automatic control – Of advance or applied tool weight

Programmed automatic drill control

Boring or penetrating the earth – Automatic control – In response to drilling fluid circulation

Programming method for controlling a downhole steering tool

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Progressing cavity motor governing system

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Progressive cavity drive train with elastomeric joint assembly f

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

Projectile assisted drill for seismic operations

Boring or penetrating the earth – Processes – Boring with specific fluid

Proppant recovery system

Boring or penetrating the earth – With means movable relative to tool to receive – retain – or... – Receiver removable through below-ground tool shaft

Propulsion seal for wire line core drilling apparatus

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

Protected cutter mounting for drill bits

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means

Protected lubricant reservoir for sealed bearing earth...

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means

Protected lubricant reservoir for sealed earth boring drill bit

Boring or penetrating the earth – Processes

Protected lubricant reservoir with pressure control for...

Boring or penetrating the earth – Ice boring

Protective device for thermochemical ice penetrator

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Protective overlay coating for PDC drill bits