One trip well apparatus with sand control
One trip well drilling to total depth
One trip window cutting tool method and apparatus
One-piece ram element block for wireline blowout preventers
One-position fill-up and circulating tool
One-step directional coring or drilling system
One-trip casing cutting and removal apparatus
One-trip washdown system
One-trip well perforation/proppant fracturing apparatus and...
One-trip whipstock setting and squeezing method
One-trip window milling apparatus & method with...
One-trip window-milling system
One-trip, thru-tubing, window-milling system
Open bottom float tension riser
Open hole anchor
Open hole expandable patch with anchor
Open hole frac system
Open hole non-rotating sleeve and assembly
Open hole packer of the sleeve type
Open hole straddle system and method for setting such a system