Installation of oil and gas rigs and drilling equipment, equipment for drilling oil and gas wells, and parts and fittings therefor; building construction, maintenance and repair of oil and gas rigs and drilling equipment; building construction supervision; installation of building insulation; building sealing; cleaning of buildings; drilling of wells; building painting interior and exterior; pipeline installation and repair; pump repairing; quarry services; rental of construction equipment; rental of construction cranes; rental of construction excavators; maintenance and repair of safes; floor sanding; scaffolding erection; underwater construction and repair; building maintenance, repair and installation of oil rigs and drilling equipment; drilling services including managed flow and pressure drilling in the oil and gas industries; technical consultation in the fields of installation, repair and maintenance of oil rigs and drilling equipment, drilling of oil and gas wells; analysis of oil fields

Architectural designs; bacteriological research; biological research; calibration; chemical analysis; chemical research; reviewing standards of practices to assure compliance with environmental zoning laws and regulations; engineering; geological prospecting; geological research; geological survey; land surveying; mechanical research; oil prospecting; oil field surveying; oil well testing; underwater exploration; product development; scientific research; provision of computer services in drilling operations including computer services for control of flows and pressures while drilling oil and gas wells