Last week Williams Partners announced that it had agreed to acquire significant gathering assets in the Marcellus.  "Williams Partners L.P. today announced it has agreed to acquire Caiman Energy’s wholly owned subsidiary, Caiman Eastern Midstream LLC, for approximately $2.5 billion. The acquisition will provide Williams Partners with a significant footprint and growth potential in the natural gas liquids-rich portion of the Marcellus Shale."  More:  "Caiman’s existing physical assets include a gathering system, two processing facilities and a fractionator. Expansions to the gathering system, processing facilities and fractionator are currently under construction. An ethane pipeline is also planned."

Very interesting.