PetroVietnam Drilling and Well Services JSC (PVD.VH) said Thursday that it has signed a contract to lease an oil rig to BHP Billiton Ltd. (BHP.AU).

The oil rig is for drilling BHP Billiton is planning in 2011, the company said in a statement, without providing further details.

-By Vu Trong Khanh, Dow Jones Newswires; +84 4 35123042; trong-khanh.vu@dowjones.com