• Maersk Drilling has appointed Lars Ostergaard chief commercial officer, replacing Ana Zambelli, with Brian Nygaard named head of strategy and partnering

• Shelley Watson has been named chief operating officer of RAK Petroleum, also replacing Arya Bolurfrushan as chief financial officer

• Rory Ferguson appointed Petroplan Group chief executive

• Virtus Oil & Gas has named Dan Green chairman and Brett Murray and Jim Gibbons directors

• Energy XXI Gulf Coast has named Michael Reddin interim chief executive, Scott Heck chief operating officer and Hugh Menown interim chief financial officer

• Obren Lekic has been named chief executive of Borets US

• Keith Turnbell has replaced Doug Baker on the board of Bellatrix Exploration