San Mateo Midstream expands Delaware basin footprint with $752-million acquisition

The acquisition will expand San Mateo's pipeline network to over 800 miles and increase processing capacity to over 1 bcfd. The aim is to improve natural gas flow across the basin.

Key Highlights

  • San Mateo Midstream agreed to acquire Cardinal Midstream assets to expand its Delaware basin operations.
  • The deal includes 145 miles of pipelines and a cryogenic processing plant with 320 MMcfd capacity.
  • Post-acquisition, San Mateo's processing capacity will exceed 1 bcfd, with a gathering network of over 800 miles.
  • The integration aims to improve natural gas flow, operational efficiency, and system flexibility across the basin.

San Mateo Midstream LLC, Dallas, Tex., will expand its Delaware basin position through a planned acquisition of operating subsidiaries of Cardinal Midstream Partners LLC.

San Mateo—a joint venture of Matador Resources Co. (51%) and Five Point Infrastructure (49%)—agreed to acquire Cardinal Delaware Basin LLC and Cardinal New Mexico LLC for $752 million.

Cardinal’s system includes about 145 miles of high- and low-pressure natural gas gathering pipelines in West Texas and southern Eddy County, NM, and roughly 320 MMcfd of design capacity at its cryogenic processing plant in Loving County, Tex. The plant, on a 75‑acre site, has two residue gas takeaway connections and four NGL takeaway connections.

San Mateo said the assets complement its existing gathering and processing system and will improve natural gas flow across the northern Delaware basin in southeast New Mexico and West Texas. The acquisition is expected to increase San Mateo’s designed processing capacity to more than 1 bcfd and expand its gathering network to more than 800 miles.

Integration of the systems is expected to provide immediate operating synergies, including the ability to move volumes between Cardinal’s Loving County plant and San Mateo’s Marlan and Black River plants in Eddy County.

“With this acquisition, San Mateo not only gains more processing capacity, a larger pipeline system and a more diverse customer base but also improves its positioning for strategic transactions in the future,” said Brian J. Willey, San Mateo chairman and executive vice-president of midstream for Matador.

Willey added that connecting the systems will “complete the circle” of San Mateo’s Delaware basin infrastructure, enhancing flow assurance for Matador and third‑party customers and improving flexibility to move natural gas throughout the northern Delaware basin north to south or south to north.

The transaction is expected to close on or before July 31, 2026, subject to customary conditions. Cardinal’s field employees are expected to join San Mateo upon closing.

About the Author

Mikaila Adams

Managing Editor, Content Strategist

Mikaila Adams has 20 years of experience as an editor, most of which has been centered on the oil and gas industry. She enjoyed 12 years focused on the business/finance side of the industry as an editor for Oil & Gas Journal's sister publication, Oil & Gas Financial Journal (OGFJ). After OGFJ ceased publication in 2017, she joined Oil & Gas Journal and was later named Managing Editor - News. Her role has expanded into content strategy. She holds a degree from Texas Tech University.

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