Apparatus for producing deep boreholes
Apparatus for the cooling of drilling liquids
Apparatuses and methods relating to cooling a subterranean...
Cooled journal bearing
Cooling a drilling tool component with a separate flow stream of
Device for sampling soils and retaining volatiles therein and me
Downhole drilling tool cooling system
Drill fluid powered hydraulic system
Drilling fluid cooling system
Earth boring bit with means for conducting heat from the bit's b
Gas hydrates drilling procedure
Hydrothermal drilling method and system
Method and apparatus for moulding protective tubing simultaneous
Method and apparatus for recovering unstable cores
Method and system for minimizing circulating fluid return...
Method of attachment of a towing anchor to an iceberg
Process and installation for drilling holes in the earth's crust
Sampling method and sampler for gas hydrates by hole bottom...
Temperature-regulated, sealed bearing system for rock drill bits
Thermal shield for drilling motors