The chief financial officer of Bermuda-based Seadrill, Esa Ikaeheimonen, has decided to leave the company.Mr Ikaeheimonen will depart during the second half of 2012 to pursue other career opportunities.In this context Seadrill has restructured its finance organisation, dividing the CFO role into two and creating a new role of chief accounting officer (CAO).Both senior finance roles, CFO and CAO, shall report to the CEO, Alf Thorkildsen, and be part of the executive management team.The revised CFO role shall focus on managing Investor Relations, Treasury, Tax, and Risk and Insurance, whereas the new role of CAO shall manage all accounting and controlling work, including external reporting.Robert Hingley-Wilson has been appointed as the new CAO, and Rune Magnus Lundetrae as the CFO (designate) with immediate effect to replace Mr Ikaeheimonen.