Method of drilling a hole in a rock
Method of drilling a lossy formation
Method of drilling holes in rock
Method of dynamically controlling bottom hole circulation...
Method of dynamically controlling open hole pressure in a...
Method of predicting and controlling the drilling trajectory in
Method of regulating drilling conditions applied to a well bit
Methods and apparatus for controlled directional drilling of bor
Methods and systems for averting or mitigating undesirable...
Modular design for downhole ECD-management devices and...
Modulated bias unit for rotary drilling
Navigable downhole drilling system
Optimizing drilling performance using a selected drilling fluid
Portable earth boring machine
Portable earth boring machine
Positioning device for a member and drilling system employing sa
Procedure for controlling a rock drill and rock drill for carryi
Process and device for guiding a drilling tool through geologica
Process and drilling equipment for sinking a well in underground
Programmed automatic drill control