The expansion, which will be undertaken for multiple pipelines, will create additional natural gas takeaway capacity in two highly active production areas in the country, said the US midstream service provider.

Oneok’s WesTex Transmission system, which runs from the Permian Basin to interstate pipeline delivery points in the Texas Panhandle, will see a capacity expansion of 150 million cubic feet per day (MMcf/d).

The company said that it is seeking for additional interest for takeaway capacity in a follow-up open season that could possibly take the expansion to 450MMcf/d.

It will also expand the Oneok Gas Transportation system towards the east to increase its capacity by a further 150MMcf/d. The expansion of the pipeline will be from two natural gas processing plants located in the STACK and SCOOP areas to an eastern interstate pipeline delivery point in Oklahoma.

Oneok Gas Transportation will also see a 100MMcf/d westbound expansion from the STACK area to various interstate pipeline delivery points located across western Oklahoma. Oneok is targeting the completion of the westbound expansion in the fourth quarter 2018.

The midstream company plans to seek additional interest for takeaway capacity in a follow-up open season that could probably increase the expansion to 300MMcf/d.

Also included in the plans is to make the Roadrunner Gas Transmission bidirectional, thereby creating about 750MMcf/d of eastbound transportation capacity supplied from the Delaware Basin to the Waha area.

Like the Oneok WesTex Transmission expansion and the eastbound expansion of ONEOK Gas Transportation, the Roadrunner bidirectional project is likely to be completed in the first quarter of 2019.

Oneok president and CEO Terry K. Spencer said: “These capital-efficient expansions, primarily through the addition of compression facilities, will quickly create critical takeaway capacity and offer additional optionality for natural gas producers and processors in the Permian Basin and Oklahoma.

“We also continue active discussions with shippers in these areas regarding additional natural gas takeaway solutions that ONEOK could provide.”