Managed pressure drilling (MPD) and pumping of wells; repair and maintenance of drilling rig mechanization and mechanical handling machines and devices; construction project management services in the field of construction of oil and gas wells; oil well completion services, namely, installation of cased hole systems, cased hole completions, expandable completions, open hole systems, multi-stage fracturing systems, and swellable packers; directional drilling services for oil and gas wells; rental of oil and gas well drilling tools and equipment; rental of multi-stage fracturing completion system for use in oil and gas wells drilling; repair and maintenance of oil and gas drilling tools and equipment; fishing operation and services related to oil and gas well drilling, namely, removal of wellbore obstructions; oil well drilling services; liner hanger running service, namely, installation of oil and gas well liner hangers; casing running services, namely, oil well casing, tubing, and drill pipe installation; repair of oil well casing and tubing using metal patches; cementing services for oil and gas wells; oil and gas well coil tubing installation services; construction of structures for the production of crude oil in the oil and gas field