Rising natural gas liquids production in the Niobrara is increasingly straining existing pipeline capacity out of the region and has spurred midstreamers to propose various combinations of new pipelines, expansions to existing pipelines and pipeline conversions in order to ease constraints. One of the latest entrants is a joint venture of Williams and Targa Resources that would expand Rockies producers’ ability to move mixed NGLs to the Mont Belvieu, TX, hub for fractionation and marketing/export. Williams plans to build a 188-mile pipeline — Bluestem — that would extend from its Rockies-to-Conway, KS, Overland Pass Pipeline to Kingfisher County, OK. For its part, Targa will build a 110-mile extension of its new Grand Prix NGL pipeline from southern Oklahoma north into Kingfisher to connect with Bluestem. As part of the deal, Williams has also contracted substantial volumes on Grand Prix as well as at Targa’s fractionation facility at Mont Belvieu. Today, we discuss Williams and Targa’s plan.