The battle to buy Anadarko Petroleum by Chevron and Occidental Petroleum (Oxy) has taken an interesting turn. Over the weekend Oxy revised its offer. It will still pay Anadarko shareholders $57 billion (as before), but the offer was revised to dial up the amount of cash and dial down the amount of stock swaps. Never hurts to use cash as a sweetener. The new offer did the trick. Although Anadarko previously signed an agreement to sell itself to Chevron, Anadarko announced yesterday they are leaving Chevron at the altar and riding off into the sunset to elope with Oxy.