Oil and gas drilling; Oil and gas industrial machine cleaning services; Oil and gas well downhole coring services; Oil pipeline construction; Oil pipeline laying; Oil pumping; Oil pumping and extraction; Oil well casing, tubing, and drill pipe installation; Oil well drilling; Cementing services for oil and gas wells; Construction of facilities, structures, living quarters, and utility buildings, production modules and subsea modules in the oil and gas industry; Construction of structures for the production of crude oil; Construction of structures for the storage of crude oil; Construction project management services in the field of construction of offshore oil and gas facilities; Consulting services in the field of offshore oil and gas facility construction; Covering, coating, and maintenance of pipelines for oil; Drilling and pumping of oil; Drilling for crude oil; Drilling of oil wells; Drilling of deep oil or gas wells; Drilling of deep oil or gas-wells; Drilling of deep oil wells; Extraction of oil; Extraction of oil and gas; Hydraulic fracturing services; Installation of oil production apparatus; Pumping crude oil; Rental of oil well drilling tools; Technical consulting related to the installation of oil and gas equipment, control systems, and machinery; Water or oil well boring; Well improvement services, namely, hydraulic fracturing of subsurface geologic formations to enhance well production; Wirelining for oil wells