Aug 5 (Reuters) - Midstream company ONEOK ( OKE ) said

on Tuesday it has made a final investment decision to build a

new natural gas processing plant in the Delaware Basin, aiming

to grow its footprint in the top U.S. shale field as gas volumes

surge.

The Big Horn plant will have a capacity to process 300

million cubic feet per day of natural gas and treat high-carbon

dioxide gas, the company said on its post-earnings call.

The facility and associated treater are expected to cost

about $365 million and begin service in mid-2027.