French supermajor, Total and Chinese state-owned CNOOC have modified the sale and purchase agreement for LNG supply, inked in 2008. While the contract volume has been increased from 1 Mtpa to 1.5 Mtpa of LNG, the term of the contract has been extended from 15 years to 20 years. The move will further strengthen the cooperation between the firms in the liquefied natural gas business.