Oil and gas well completion apparatus for hydraulic fracturing operation and oil and gas production, namely, automatic liquid-flow control machines integrating fracturing sleeves, liner hangers, wellbore packers, and fracturing plugs for use in the flow of materials in the nature of oil and gas throughout the well, and the structural component parts thereof; downhole equipment apparatus in the nature of automatic liquid-flow control machines integrating fracturing sleeves, liner hangers, well...

Onsite field services, namely, in the field of hydraulic fracturing operations and related in the nature of hydraulic fracturing of subsurface geological formations to enhance well production

[ Cabinets for loudspeakers; ] Cameras; [ Car video recorders; ] Earphones and headphones; [ Electric batteries; Electrical inductors; ] Global positioning system (GPS); [ Head-mounted video displays; Laptop computers; ] Loudspeakers; [ Magnetic encoded identification bracelets; PC tablets; ] Portable media players; Remote control telemetering machines and apparatus; Smart watches; Smartphones; [ Stands for handheld digital electronic devices, namely, cell phones, MP3 players, personal digita...

Metal rollers for use with cables, rods and strings in the oil and gas well industry; Metal rollers for use with cables, rods and strings on a downhole apparatus for reducing friction in an oil or gas well