"Kelly in 2010 listed ... income from various energy partnerships. He did extremely well investing in energy, particularly in the Marcellus Shale. As a result, Kelly has been listed as one of the 50 wealthiest members of Congress, according to Roll Call. His maximum net worth was estimated at $61.3 million, according to 2010 records, the latest available on OpenSecrets.org. That made him the 12th-wealthiest member of the House in 2010.
The reason? Exxon Mobil Corp. bought privately held natural-gas company Phillips Resources Inc. and a related company, TWP Inc., for $1.69 billion in June 2011. The acquisitions included about 317,000 acres for exploration in the Marcellus region. Kelly's latest disclosure lists him as a major shareholder in both Phillips and in a series of PC Exploration Limited partnerships,
In his latest 2011 filing, Kelly's ownership in Phillips Resources Inc. ($5,100,002 to $25,250,000 worth) meant dividend income alone of $100,000-$1,000,000 annually. In 2009, his Phillips and TWP holdings were worth $1 million and $5 million, respectively, so the purchase by Exxon was enormously lucrative for Kelly."