China Petroleum & Chemical Corp (ADR) SNP -- formerly known as Sinopec -- is mulling a takeover of Anadarko Petroleum Corporation APC, source familiar with the matter told Benzinga. China Petroleum is an $89 billion market cap company involved in the crude oil and natural gas space. Anadarko is an independent exploration and production with a market cap of about $23.4 billion. Both companies were trading lower on Monday. Back in October, unconfirmed market chatter said Chevron Corporation CVX is in advanced acquisition talks with Anadarko. Sources say Chevron could make a deal for Anadarko at approximately $83 per share in cash and stock. A few weeks later, Bloomberg reported that Anadarko approached Apache Corporation APA "about a combination that would be the largest for an independent U.S. oil and gas producer this year."