GhanaNational Petroleum Corporation (GNPC) has appointed Japan-based trading company Mitsui & Co Limited to help develop infrastructure for its natural gas production, the government ministry said on Wednesday.

Mitsui will assess how best to construct a second plant to process raw natural gas from the Tano basin, the petroleum ministry said in a statement after a memorandum was signed.

State-owned GNPC has stakes in Ghana's major oil and gas blocks, including the flagship Jubilee field, and it has plans to become a national supplier of gas.

The West African nation produces an average of 100,000 barrels of oil daily and 140 million cubic feet of gas from the Jubilee field, operated by a consortium led by Tullow Oil.

Two other fields, Tweneboa-Enyenra-Ntomme, operated by the consortium, and Sankofa, operated by Italy's ENI, are expected to come on stream next year and 2017 respectively.