Last week, Anadarko ( APC ) announced the sale of its Chinese subsidiary to Hong Kong-listed BrightoilPetroleum Holdings Ltd. for $1.075 billion. The deal is the latest effort by the Woodlands, Texas-based oil and gas producer to rebalance its portfolio and concentrate on more profitable opportunities in the US and the Gulf of Mexico. Let's take a closer look at some of the main reasons why the deal is good for the company and its shareholders.