Williams Partners L.P. (NYSE:WPZ) completed its previously announced acquisition of Caiman Energy's wholly owned subsidiary, Caiman Eastern Midstream, LLC. The acquisition provides Williams Partners with a significant footprint and growth potential in the natural gas liquids-rich portion of the Marcellus Shale.

Williams (NYSE:WMB) owns approximately 68% of Williams Partners, including the general-partner interest. 

"With the completion of this major acquisition, we're well on our way to become the leading provider of gathering, processing and transportation solutions for producers in the Marcellus Shale," Alan Armstrong, chief executive officer of Williams Partners' ...