Drilling apparatus with a radially displaceable reamer as...

Drilling apparatus with dual pipe and cross-over

Drilling apparatus with mast tilting about upper pivot axis...

Drilling apparatus with mast tilting about upper pivot axis...

Drilling apparatus with motor-driven pump steering control

Drilling apparatus, method, and system

Drilling apparatus, particularly wire line core drilling...

Drilling arrangement and drilling feed mechanism

Drilling assembly and method

Drilling assembly for drilling holes in subsurface formations

Drilling assembly with a steering device for coiled-tubing...

Drilling assembly with reduced stick-slip tendency

Drilling assembly, deviation sub therewith, and method of...

Drilling bit

Drilling bit

Drilling bit assembly and apparatus

Drilling bit for drilling while running casing

Drilling bit having a cutting element. co-sintered with a...

Drilling bit with a single cutting head

Drilling bit with full release void areas