On October 13, 2005, the Wall Street Journal (WSJ) reported that Occidental Petroleum Corporation had agreed to acquire Vintage Petroleum Inc. for about $3.5 billion of cash and stock. Other recent acquisitions reported by the Wall Street Journal include: 1) Valero Energy Corp. agreed to acquire Premcor Inc. for $6.9 billion in cash and stock (reported April 25, 2005); 2) ChevronTexaco Corporation agreed to buy Unocal Corporation for about $16.8 billion of cash and stock (April 5, 2005); and 3) Marathon Oil agreed to acquire from Ashland Corporation the 38 percent of the Marathon Ashland Petroleum refining/marketing joint venture that it did not already own (March 19, 2004). Marathon reportedly paid about $3 billion (about $1.1 billion of cash and stock and the assumption of about $1.9 billion in debt) for Ashlands share in the refining/marketing joint venture. In addition to acquiring full ownership of the Marathon Ashland Petroleum assets, Marathon also acquired 61 Valvoline Instant Oil Change outlets and other related assets currently owned by Ashland.