The Garden Creek II plant has been built as part of the partnership’s $7bn to $7.5bn capital-growth program through 2016.
Oneok Partners president and chief executive officer Terry Spencer said: "ONEOK Partners’ Williston Basin natural gas processing capacity now exceeds 500 MMcf/d – five times more than our processing capacity in the region was in 2010 – and we expect that number to grow to more than 600 MMcf/d during the fourth quarter of this year, when the Garden Creek III plant is completed.
"Increased natural gas processing capacity also will lead to a reduction of natural gas flaring in North Dakota.
Upon completion of additional natural gas infrastructure in the region, the partnership’s Williston Basin natural gas processing capacity would increase to approximately 1.1 billion cubic feet per day (Bcf/d) by the third quarter of 2016.
"Pending board approval, we expect to announce additional Williston Basin natural gas processing capacity by the end of this year."
The partnership is also planning to invest approximately $3.8bn to $4.3bn for natural gas gathering and processing projects, and approximately $3.2bn for natural gas liquids projects.
Additionally, nearly $4bn will be invested for growth projects related to resource development in the Williston Basin, North Dakota.
