Oil and gas well drilling; oil and gas well completion and workover services, namely, oil well casing, tubing and drill pipe installation, drilling of oil and gas wells, cementing services for oil and gas wells, wirelining for oil and gas wells, oil and gas well boring, oil and gas well downhole coring services, construction of structure for the production of crude oil; oil and gas pipeline construction; oil and gas pipeline maintenance and repair services; slickline wireline services, namely, wirelining for oil and gas wells and wirelining for oil and gas wells in the nature of pipe recovery services; mechanical contractor services; oil and gas well hydraulic fracturing services; Well improvement services, namely, bonding and securing well casing and providing zonal isolation for oil and gas well drilling services; Oil and gas well completion services, namely, hydraulic fracturing, wireline, cementing and coiled tubing services; cleaning of oil and gas wells; oil and gas well downhole completion services, namely, perforating wells; rental of pumping equipment for use in coil tubing, nitrogen, and fluid pumping services in the oil and gas drilling and production industry; repairing and maintaining re-entered wells; maintenance, servicing and dismantling of oil and gas wells, namely, plugging and abandonment of oil and gas wells; rental of oil and gas well completion tools; hydraulic fracturing services; cementing services for oil and gas wells; pumping of oil and gas, namely, pumping by means of coil tubing, nitrogen, and fluid pumping services for the oil and gas drilling and production industry