ONEOK Provides Update on Mont Belvieu, Texas Incident

TULSA, Okla. – ONEOK, Inc. (OKE), a key player in North American midstream energy, announced today that a fire occurred on October 6, 2025, at its Mont Belvieu, Texas fractionation complex. The incident was confined to the heating system of the MB-4 fractionator, one of the facility’s processing units.

The company promptly acknowledged the swift response of its employees, first responders, and community members, emphasizing that employee and community safety remains its highest priority. No injuries were reported in connection with the incident.

Following the fire, fractionation operations at the Mont Belvieu complex were immediately shut down as a precautionary measure. ONEOK confirmed that the fire was quickly extinguished and contained to the MB-4 unit. The company projects a phased resumption of operations, with all fractionation units other than MB-4 expected to return to service after standard safety inspections are completed. Repairs to the MB-4 unit will be necessary before it can be brought back online. Engineers are currently assessing the extent of the damage to the MB-4 unit.

While the full financial impact is still being evaluated, ONEOK currently anticipates that the incident will not have a material adverse effect on the company’s financial condition, results of operations, or cash flows. This assessment likely hinges on the anticipated downtime of MB-4 and potential redeployment of resources to mitigate any supply chain disruptions. Experts note that ONEOK’s integrated infrastructure and diversified asset base may provide some buffer against sustained operational impacts. The company’s existing storage capacity and alternative transportation routes could also help maintain delivery commitments.

The incident occurs amidst a period of heightened scrutiny regarding the safety and reliability of energy infrastructure. Regulatory bodies and investors are increasingly focused on environmental, social, and governance (ESG) factors. Moving forward, ONEOK will be working closely with regulatory authorities to conduct a thorough investigation of the root cause of the Mont Belvieu fire. The findings of that investigation will likely inform future safety protocols and preventative maintenance strategies within the company, and perhaps across the industry.

ONEOK’s operations are integral to the energy supply chain, providing critical gathering, processing, fractionation, transportation, storage, and marine export services. Its extensive pipeline network plays a vital role in meeting both domestic and international energy demands. As one of the largest integrated energy infrastructure companies in North America, ONEOK’s performance is closely watched as a barometer of the overall health of the midstream sector.

ONEOK is an S&P 500 company headquartered in Tulsa, Oklahoma.

Disclaimer: This article contains forward-looking statements regarding ONEOK’s expectations. Actual results may differ materially due to risks and uncertainties detailed in the company’s SEC filings, including its most recent Form 10-K. The company undertakes no obligation to update these statements.