While ExxonMobil (NYSE:XOM) is counting on around 20 new oil and gas projects around the world...

While ExxonMobil (NYSE:XOM) is counting on around 20 new oil and gas projects around the world to help reverse its declining output, some analysts are skeptical that the facilities will open on time by 2014 and that they'll bear as much fruit as much as the company expects. And nor will they make up for Exxon's exit from a massive project in Southern Iraq.