Drilling muds for use in oil well drilling; chemical additives for oil well drilling fluid

Drill bits for rock drilling; carbide tools in the nature of tools for milling and casing in well drilling, poly crystalline diamond (PCD) tools in the nature of underreamers for rock drilling; core drilling bits

Drilling of wells; oil and gas drilling; metal drilling and perforation; oil well drilling; well drilling; rental of oil well drilling tools

Oil and gas well drilling services, namely, providing measurements and downhole telemetry while drilling; tool design; tool management systems design services