A drilling tool, a self-drilling rock bolt, a drill bit, an...
A drillpipe assembly and a method of deploying a logging tool
A drillpipe sub
A drive for a cutting or grinding machine
A drive sub for receipt of bit segments
A dynamic centralizer design for probe type measuring while...
A female part and method for manufacturing female parts
A fishbone well configuration for in situ combustion
A flow control assembly having a fixed flow control device...
A fluid loss control system and method for controlling fluid...
A fluid treatment system and method and use of same
A fluid-driven alternator having an internal impeller
A foam drive method
A force balancing system for use with a well bore tool
A friction reducing tool
A friction rock stabilizer
A gas lift method with surfactant injection
A gas-liquid separator positionable down hole in a well bore
A graphical method for designing the trajectory of a well bore
A gripping arm for rock drilling equipment provided with a...