Noble Energy’s international business also includes multiple assets which provide great balance and diversity to our portfolio. Other currently producing assets include offshore positions in the North Sea and China, which have contributed significant oil production and cash flow to the Company in recent years. In addition, multiple new venture opportunities provide substantial exploration upside.
Noble Energy holds a 57 percent working interest in the Cheng Dao Xi field offshore China. Located in the shallow water of the southern Bohai Bay, the field began producing oil in 2003. In 2011, we commissioned a newly installed platform and commenced engineering and design of a third platform. Noble Energy's North Sea operations, which began in 1996, are currently being divested.
The Company's new venture teams actively seek out new exploration opportunities and their efforts have resulted in the acquisition of large acreage positions offshore Nicaragua, the Falkland Islands, and Sierra Leone and an onshore US position in Nevada. In late 2013, Noble Energy commenced drilling initial prospects on its Nevada and Nicaragua assets.