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NGLs production seen to increase from ONEOK's N.D. Garden Creek plants

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NGLs production seen to increase from ONEOK's N.D. Garden Creek plants


ONEOK Partners' newly opened 100,000 Mcf/d Garden Creek II natural gas processing facility in eastern McKenzie County, North Dakota, may add another 18,000 b/d of natural gas liquids production to the region, a Platts analysis found Wednesday.

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ONEOK Partners on Tuesday announced the plant is now operational, doubling capacity at the Garden Creek complex from 100,000 Mcf/d to 200,000 Mcf/d.

According to Maria Mejia, an analyst at Bentek, a unit of Platts, the Garden Creek I plant became operational in mid-2011 and has been operating at or above its nameplate capacity of 100,000 Mcf/d since August 2012.

"The plant has produced up to 18,000 b/d mixed NGLs and shown a GPM as high as 6.5 gallons per Mcf," she said. While ONEOK does not publicly disclose its NGL production rate, Bentek determines that rate using data provided by the company to the state.

Given that processing capacity, the Garden Creek II plant is likely to produce another 18,000 b/d NGLs.

The new plant is a part of ONEOK's projects to expand processing capacity in the Williston Basin.

Including the Garden Creek expansion, ONEOK currently operates 520,000 Mcf/d of processing capacity in the region, and it has announced five projects to expand this capacity approximately 1.1 Bcf/d by the third quarter 2016.

Three other processing plants are under construction, the company said.

The 100,000 Mcf/d Garden Creek III plant, the 200,000 Mcf/d Lonesome Creek plant, and the 200,000 Mcf/d Demicks Lake natural gas processing facility in the Williston Basin in North Dakota are expected to be completed in the fourth quarter of 2014, fourth quarter of 2015 and third quarter of 2016, respectively.

Once completed, these plants could add another 90,000 b/d of NGL production if they have the same production ratios as the Garden Creek plant.

According to Mejia, NGL production in the Williston basin averaged 85,000 b/d in 2013 and has averaged 120,000 b/d in the first half of 2014. Bentek expects production continue to grow almost four-fold over the next five years to an average 477,000 b/d in 2019.

ONEOK currently operate 520,000 Mcf/d of processing capacity in the Williston, which represent roughly 44% of the total capacity in the region.

--Zahid Afzal,
--Edited by Derek Sands,