Method and apparatus for varying the density of drilling...
Method and apparatus for varying the density of drilling...
Method and apparatus for water jet drilling of rock
Method and appartus for directing drilling fluid to the cutting
Method and arrangement for reducing dust-related problems in...
Method and casing for excavating a borehole
Method and composition for preventing or treating lost...
Method and compositions for fluid loss and seepage loss control
Method and device for boring holes
Method and device for injecting a fluid into a formation
Method and device for making a hole in the ground
Method and improvement to drilling tools allowing great efficien
Method and improvement to drilling tools comprising water passag
Method and means for drilling an earthen hole
Method and means for reduction of oxygen content in drilling flu
Method and system for accessing subterranean deposits from...
Method and system for circulating fluid in a well system
Method and system for facilitating horizontal drilling
Method and system for obtaining core samples during the well-dri
Method and system to recover usable oil-based drilling muds...