Oklahoma-based Williams Partners has entered into an agreement to acquire Williams Companies' gathering and processing assets located in Colorado's Piceance Basin for $782m.

The assets include the Parachute Plant Complex, three other treating facilities with a combined processing capacity of 1.2 billion cubic feet per day (bcf/d), and a gathering system with approximately 150 miles of pipeline.

There are more than 3,300 wells connected to the gathering system, which includes pipelines ranging up to 30-inch trunk lines.

Williams Partners expects the new assets will generate approximately $105m in segment profit plus depletion, depreciation and amortization (DD&A) for its midstream business in 2011.

Williams Partners is engaged in natural gas transportation; gathering, treating, and processing; storage; natural gas liquid fractionation; and oil transportation.