Tesoro Logistics LP (TLLP) and QEP Midstream Partners LP on Wednesday completed their merger, which last year was valued at $2.5 billion (see Shale Daily, Oct. 20, 2014).

With the acquisition’s completion, TLLP, primarily a crude oil products company, is expanding into natural gas handling and marketing.

The deal adds more than 2,000 miles of pipelines and brings TLLP’s total capacity to 2.9 Bcf/d of gas and 54,000 b/d of oil volumes.

TLLP is adding gas gathering, processing and pipelines in the Green River and Vermillion basins in southwest Wyoming; processing, gathering pipelines and compression in the Uinta in northeast Utah; and oil/gas gathering, processing and pipes in the Williston Basin in North Dakota.

TLLP late last year purchased the general partner of QEP Midstream, along with a 56% limited partner interest and all of the incentive distribution rights. Under terms of the merger agreement, QE unitholders would receive 0.3088 TLLP common units for each of their common units.

TLLP CEO Greg Goff noted that the closing marks the company’s “acquisition of a Rockies natural gas business and allows us to continue moving forward with our integrated logistics strategy.”

QEP’s decision to sell its gas midstream business underscored its plans for investing more in the exploration and production operations in the Rocky Mountains/North Dakota and Texas/Louisiana regions.