DRILLING ROBOT

Threaded 2 piece bit assembly

Full-hole reverse circulation cluster-type down-the-hole (DTH) hammer with multiple independent channels

METHODS AND SYSTEMS FOR ADAPTIVE NON-CONTACT / CONTACT BORING

High-frequency composite impactor

METHOD OF REDUCING SURGE WHEN RUNNING CASING

Drive device for rotatable operation of a drill bit of a down-the-hole hammer

ROTATIONAL SPEED REDUCTION IN DOWNHOLE TOOL ASSEMBLIES

ROCK-PIERCING FLEXIBLE ROCK DRILLING ROBOT AND ROCK BREAKING METHOD

Downhole tractor control systems and methods to adjust a load of a downhole motor

Multiple swivels and rotation motor system

Well drilling tool and method for determining parameter thereof

Drilling speed increasing device

Methods and systems for adaptive non-contact / contact boring

Square pile construction method and equipment of a rotary drilling rig

Hydraulically driven hole cleaning apparatus

Reversible polycrystalline diamond compact bit

Tunneling for underground power and pipelines

Dynamic drilling systems and methods

Downhole tractor control systems and methods to adjust a load of a downhole motor

Induced drilling method for inertia constrained implicated motion and inertial constraint induced drilling device

Lubrication system for a plunger/packing set of a fluid end

Pipeline radar and television inspection robot

FRAC PUMP AUTOMATIC RATE ADJUSTMENT AND CRITICAL PLUNGER SPEED INDICATION

Apparatus for drilling an oil well using a downhole powered rotating drill shoe mounted on casing or liner

Tunneling for underground power and pipelines

Downhole tool assembly advancement through wellbore

Rotational speed reduction in downhole tool assemblies

Downhole clutch joint for multi-directionally rotating downhole drilling assembly

Convertible framework for post hole digger

Downhole clutch joint for multi-directionally rotating downhole drilling assembly

Tunneling for underground power and pipelines

Multi fluid drilling system

Torque generator

Torsion impact speed acceleration device

Vibrationless moineau system

POLYGLYCOLIC ACID RESIN COMPOSITION, MOLDED PRODUCT FOR WELL DRILLING, AND DOWNHOLE TOOL MEMBER

Shaft enlargement arrangement for a boring system

POLYGLYCOLIC ACID RESIN COMPOSITION, MOLDED PRODUCT FOR WELL DRILLING, AND DOWNHOLE TOOL MEMBER

Multi-motor steerable drilling system and method

Mechanical force generator

Drilling type sidewall coring apparatus

Tool face control of a downhole tool with reduced drill string friction

Individually variably configurable drag members in an anti-rotation device

Steerable rotary drilling devices incorporating a tilted drive shaft

MECHANIZED SLOT DRILLING

Method for steering a direction of a drilling device drilling a hole into the ground

Method and device for making a lateral opening out of a wellbore

Bend measurements of adjustable motor assemblies using strain gauges

Fluid-driven power generation unit for a drill string assembly

DOWNHOLE TOOL USING A LOCKING CLUTCH

Directional system drilling and method

MECHANIZED SLOT DRILLING

CONTROL MECHANISM

Method and apparatus for controlling the operation of cluster drill of down-the-hole hammers

Multiple motor/pump array

Method and apparatus for drilling large-diameter hole in ground

Apparatus and method for directional drilling

COILED TUBING PERCUSSION DRILLING

Excavator apparatus for underground excavation

Drilling device for drilling and reaming of a hole

Downhole Load Sharing Motor Assembly

DRILLING ASSEMBLY

Cam assembly in a downhole component

Device for drilling a bore in the ground

Method and device for drilling holes in soil or rock material

Earth boring tool

Rotary percussive drilling device

Drilling tool

Device for advancing drillings in the ground

Reciprocable impact hammer

Systems and methods for employing multiple downhole drilling motors

Convertible framework for post hole digger

Bidirectional stabilizer