Hydraulically assisted tubing expansion

Hydraulically balanced reciprocating pulser valve for mud...

Hydraulically controlled and driven bucket-wheel excavator

Hydraulically controlled pressurized water closet flushing...

Hydraulically controlled safety valve

Hydraulically driven fishing jars

Hydraulically driven gas recovery device and method of use

Hydraulically driven vibrating device for a vibratory...

Hydraulically inflatable packer

Hydraulically openable ported sub

Hydraulically operable control unit

Hydraulically operated and released isolation packer

Hydraulically operated apparatus for mechanical splitting of...

Hydraulically operated apparatus for mechanically breaking...

Hydraulically operated dockboard

Hydraulically operated edge-of-dock leveler

Hydraulically operated flush valve for toilet flush tanks...

Hydraulically operated grade scraper

Hydraulically operated permanent type well packer assembly

Hydraulically operated power swivel