37 Downhole services relating to oil, gas, condensate and water wells, well bores and boreholes, namely, drilling, intervention in the nature of performing procedures that alter the productive state of the wells or alter the geometry of the wells, pumping, and cementing services; hydraulic fracturing of subsurface geologic formations to enhance well production; casing and lining of well bores, boreholes and oil, gas and water wells; inspection in the course of constructing oil sites; maintenance, installation, repair, deployment in the nature of rapid response engineering and manufacturing services to the oil and gas industry, refurbishment and rental of oil, gas and water field exploration and exploitation equipment, apparatus, tools, instrumentation, machines and articles; on-site and off-site inspection in the course of constructing pipes; maintenance, installation, repair, refurbishment and rental of pipes, tubulars, articles, tools, machines and apparatus for drilling, completing, intervening in, cementing and allowing production from boreholes, well bores and oil, gas and water wells; on-site and off-site inspection in the course of constructing water field equipment; on-site and off-site inspection in the course of constructing borehole structures, maintenance, installation, repair, refurbishment and rental of manmade structures used in or around boreholes, well bores and oil, gas and water wells, well bores and boreholes; provision and deployment of coiled tubing for pumping, cementing, fracturing and acidising oil, gas and water wells, well bores and boreholes; information, advisory and consultancy services in relation to the aforesaid services