The deal, which will see Sinopec pay $3.1 billion in cash, represents the latest in a series of similar transactions by Chinese oil firms who are looking to secure energy supplies in order to meet growing domestic demand.
"Sinopec is an ideal partner for us, and we look forward to the growth and value generation ahead for both companies through the expansion of our collaboration to other projects," Steven Farris, chief executive of Apache, said in a statement.