Novel fluids and techniques for maximizing fracture fluid...

Novel techniques for hydraulic fracturing combining oriented...

Novel tracer materials

Nozzle

Nozzle assembly for rotary drill bit and method of installation

Nozzle for jet drilling

Nozzle means for rotary drill bits

Nozzle placement in large diameter earth boring bits

Nozzle retaining ring with crushed o-ring

Nozzle retention system for rock bits

Nozzle unit and method for excavating a hole in an object

Nozzles including secondary passages, drill assemblies...

Nuclear explosive method for stimulating hydrocarbon...

Nuclear heating of oil-bearing formations

Nuclear waste disposal site

Numerical simulation and economic evaluation of hybrid...

Nut plate integral epoxy filled sleeve

Nutating drill bit

Nutating single cone drill bit

Nutrient injection method for subterranean microbial processes