Anadarko Petroleum has agreed a $1.4 billion deal with Japanese trading and investment group Mitsui & Co to sell a minority stake in its Marcellus Shale natural gas project in Pennsylvania. The deal announced yesterday will give Mitsui control of 32.5 percent of Anadarko's shale gas assets in the state, where most of the 250,000 square kilometre Marcellus deposit is located. A rapidly developing natural gas field, Marcellus also reaches into New York and other states. Anadarko has 715,000 gross acres of the field.