WILLBROS

Business management of pipeline systems, contract drilling, production facilities and other hydrocarbon related facilities for others and operation of oil and gas wells and other hydrocarbon related facilities and business project management services

Construction and construction management supervision of pipeline systems, drilling, production facilities and other hydrocarbon related facilities for others and oil and gas wells; oil and gas well drilling; and maintenance of pipeline systems, oil and gas wells

Transmission of crude, refined petroleum and natural gas byway of pipelines for others

Engineering services, exploration of oil, gas and other hydrocarbons, product development for others in the field of oil, gas and other hydrocarbons; and computer project management services