The deal, to be paid in the form of a capital carry, will give Mitsubishi an average of 20% interest in the nine Western Province properties, and leave Calgary-based Talisman with an average interest of 40%.
The deal, effective 1 January, is subject to government and partner approval, including Australia's Horizon Oil, which holds a 50% stake in petroleum retention licence 4 and a 45% stake in PRL 21.
The deal will also cover PRLs 8 and 28, and petroleum prospecting licences 235, 239, 262,268 and 269.
The players are seeking to develop the licences into a potential liquefied natural gas exportation of around 3 million metric tonnes a year.
Talisman
launched the stake sale late last year, appointing Sydney-based advisory RFC Corporate Finance to find an investor.
Listed in New York and Toronto, Talisman Energy is a diversified exploration company with principal operations in North America, the North Sea and Southeast Asia.
Mitsubishi Corporation is a global integrated business that has expanded to natural resource development in recent years from its traditional trading operations in a wide range of industries spanning 500 subidiaries in 80 countries.