Disc cutters for rock working machines
Disc cutting units for use on rock boring machines
Disc drill bit
Disc loader
Disc swab
Disc type center cutter for a boring machine
Disconnect check valve mechanism for coiled tubing
Disconnect device for downhole assembly
Disconnect for use in a wellbore
Disconnectable fitting for line guide
Disconnectable riser for deep water operation
Disconnectable tension leg platform for offshore oil...
Discontinuous advance device for boring continuous cutting...
Discontinuous plane weld apparatus and method for enhancing...
Discrete element modeling of rock destruction under high...
Dispersant and fluid loss additives for oil field cements
Dispersant compositions for subterranean well drilling and...
Dispersant compositions for subterranean well drilling and...
Dispersing cellular micro-organisms
Dispersing clayey deposits