hmmmm no company called Qatar Helicopters either :) hehehe

anyway, the best one who could answer you are the people who worked at oil rigs :)

added information, they operate Bell 412 series, Bell 230, Agusta Westland AW139, and the VVIP helicopter Sikorsky S92 :)

"How far you go in life depends on you being tender with the young, compassionate with the aged, tolerant of the weak. Someday you will have been all of these."