An acoustic transmission system

An acoustic transmisson system

An advancing tailpiece

An agitating apparatus and method for enhancing production...

An anchor bolt assembly

An apparatus and a method for deployment of a well...

An apparatus and a method for facilitating the connection of...

An apparatus and a method for launching plugs

An apparatus and a method of fragmenting hard particles

An apparatus and method for cutting a wellbore

An apparatus and method for facilitating the connection of...

An apparatus and method for facilitating the connection of...

An apparatus and method for modifying the sidewalls of a...

An apparatus and process for removing liquids from drill...

An apparatus and system for making at-bit measurements while...

An apparatus for a borehole influx fluid parameters'...

An apparatus for connecting tubulars using a top drive

An apparatus for connecting tubulars using a top drive

An apparatus for creating pressure pulses in the fluid of a...

An apparatus for drilling open a tunnel and drilling method