Universal rig with vertical stand for tubulars

Universal tubing hanger suspension assembly and well...

Unknown

Unlocking packer setting method and device

Unplanar non-axisymmetric inserts

Unplugging brine-submerged perforations in a well

Unsintered mesh sand control screen

Up-hole overshot and safety drilling apparatus

Up-hole pump-in core barrel apparatus

Up-to-set-lock mandrel with no-go key structure and method...

Upgrading and mining of coal

Upgrading and recovery of heavy crude oils and natural...

Uphole hammer

Upper beam for a telescopic feeder, telescopic feeder and...

Uppers plug

Upward tunneling

Uranium extraction from underground deposits

Uranium solution mining process

Uranium solution mining using potassium-containing solutions

Usage of oil facilities waste sludge and fine tailings water...