ExxonMobil buys U.S. natural gas for $31 billion–I told you this was a big trend

ExxonMobil (XOM) will buy XTO Energy (XTO) for $31 billion in stock. (ExxonMobil will also assume $10 billion in XTO Energy debt.)

This acquisition is just the latest example of a shift among the international energy majors from exploration and development for oil in risky new geologies and tough climates to a concentration on predictable, low-production cost assets such as onshore U.S. reserves of natural gas locked up in shale formations such as the Barnett shale formation of Texas.

I flagged that trend for you in two posts earlier this month. You’ll find links to those columns later in this post. Read more