But these days, he's house hunting in San Antonio, the biggest city near the booming Eagle Ford Shale formation, a prime location for hydraulic fracturing.

WSJ: From Oil, a Land Rush��WSJ Mansion

He says that the Monterey geological formation is uncommon, and at present, hydraulic fracturing cannot work there.

FORBES: California's Clash: Shale Oil or Green Energy

According to Polish daily Rzeczpospolita, on June 15 Lane Energy of Canada is set to begin drilling for unconventional shale gas deposits using a technique called hydraulic fracturing also known as fracing in northern Poland in the geological formation referred to as the Baltic Depression.

FORBES: Poland: Fracing On The Rise?