Today, ExxonMobil announced it had reached two separate agreements with American Energy-Utica and Endeavor Energy Resources, in Utica, Ohio, and the Permian Basin in Texas, respectively. The agreements will allow Exxon to further expand the assets of its oil and natural gas portfolio in the U.S. The agreements have been made through ExxonMobil subsidiary XTO Energy, which manages the company's oil and natural gas portfolio in the United States. The agreement with Endeavor Energy Resources will further increase the holdings of XTO to 1.5 million acres in the Permian Basin, which is a key area of onshore oil production in...