Blowout preventer with ram socketing

Blowout preventer with removable packer

Blowout preventer with rope packing seal

Blowout preventer with tubing shear rams

Blowout preventer with variable inside diameter

Blowout preventer, shear ram, shear blade and seal therefor

Blowout ram preventer

Blowout valve assembly

Blunt faced cutter element and enhanced drill bit and...

Body construction for a drilling machine

Body structure and nozzle for enhancing the flow of drilling...

Bolt assembly

Bolt tensioning apparatus

Bolt-on well adapter

Bolting partner

Bonded, mechanically interconnected seal arrangement for a...

Bonding casing to the wall of an underground borehole

Bonding of particulate materials

Boom arrangement for a scaling device and scaling device

Boom suspension assembly