China has invested more than $17 billion in oil-and-gas properties in the United States and Canada, including a one-third interest in 265,000 acres in Louisiana’s Tuscaloosa Marine Shale, according to a story in The Wall Street Journal.

Sinopec, which is one of China’s major energy companies, acquired the Tuscaloosa stake as part of a $2.5-billion deal with Devon Energy. In all, China owns parts of 3.6 million acres of oil-and-gas properties, as well as minority pieces of leases in the Gulf of Mexico.