Universal pipe and tubing injection apparatus and method
Universal rig with vertical stand for tubulars
Universal top-drive wireline entry system bracket and method
Universal washdown system for gravel packing and fracturing
Unlocking packer setting method and device
Unplugging brine-submerged perforations
Upgrading and recovery of heavy crude oils and natural bitumens
Upgrading and recovery of heavy crude oils and natural...
Uphole disposal tool for water producing gas wells
Upward movement only actuated gravel pack system
Urea as a cosurfactant in enhanced oil recovery processes
Use of a gel above a controlled pulse fracturing device
Use of a liquid membrane for scale removal
Use of a proppant with controlled pulse fracturing
Use of alkali metal silicate foam with a chemical blowing agent
Use of biodegradable alcoxylation products for cleaning...
Use of breaker chemicals in gelled hydrocarbons
Use of capillary-membrane sampling device to monitor oil-drillin
Use of carbon dioxide for gas-lifting heavy oil
Use of carbon-dioxide-based fracturing fluids