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Oklahoma Woodford shale gas plants, gathering change hands

Warren R. True
Chief Technology Editor-LNG/Gas Processing

HOUSTON, Oct. 11 -- Cardinal Midstream LLC, Dallas, will pay $268 million to Antero Resources LLC, Denver, for natural gas midstream processing and gathering in eastern Oklahoma’s Arkoma Woodford shale.

Cardinal will acquire Antero’s 60% interest in Centrahoma Processing LLC, a joint venture with MarkWest Energy Partners LP, Denver. Centrahoma operates two cryogenic processing plants in Coal and Atoka counties, which jointly have 100 MMcfd in inlet capacity, and an NGL pipeline that connects the two plants.

The sales transaction, to be concluded next month, also includes Anetro’s Northern Front gathering system that delivers rich natural gas to Centrahoma along with Antero’s East Rockpile gathering system in Pittsburgh County, Okla. That system gathers lean gas for amine treating and compression. Cardinal said it will expand treating and compression on East Rockpile as volumes on the gathering system increase.

The two gas plants subject to the sale currently produce about 9,500 b/d of NGLs that are sold to Oneok Partners LP, Tulsa, a company spokesperson told OGJ. Residue gas from the plants currently flows into transmission operated by Enogex, Oklahoma City; MarkWest; Centerpoint, Houston; and Kinder Morgan’s Natural Gas Pipeline Co. of America.

In addition, Cardinal Midstream announced it is in the engineering phase of an additional 120-MMcfd gas plant projected to start up is 2011.

Contact Warren R. True at

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