Oil and gas well downhole system comprised of tools, namely, fracports for the placement of fluids or fluid control out of wells, ball seats, valves, ceramic or metal balls for use in the flow of fluids, wellbore casing, tubing, circulating valves, centralizers, wireline retrievable ball seats, liner hangers, liner packer, wiper darts and plugs, wiper ball, all used in oil and gas well completions for fracturing wells for stimulation of oil or gas recovery

Oil and gas well fracturing and stimulation services

Acoustic earmuffs

specially shaped cinder blocks used as a component of a sound acoustical system