TULSA, Okla.--(BUSINESS WIRE)--Williams (NYSE: WMB) today announced that it has reached an agreement to acquire a portfolio of natural gas storage assets from an affiliate of Hartree Partners LP for $1.95 billion. The transaction includes six underground natural gas storage facilities located in Louisiana and Mississippi with total capacity of 115 billion cubic feet (Bcf), as well as 230 miles of gas transmission pipeline and 30 pipeline interconnects to attractive markets, including LNG markets, and connec ...