Monday, August 25, 2025

Drilling the Kevin Dome in Northwest Montana Yields CO2, Natural Gas, and Helium: New Processing Plant Will Separate the Gases for Sale

     U.S. Energy Corp. is developing the Kevin Dome in Northwest Montana for industrial CO2, helium, and natural gas. Flow testing on a production well yielded a gas composition of approximately 85% CO2, 5% natural gas, and 0.4% helium. According to Ryan Lewis Smith, President and CEO, the initial phase of the development drilling program is complete and on target.

"With 3 producing industrial gas wells and 2 injection wells, we are well positioned for near-term cash flow generation. These results validate the quality and scale of our resource, further reinforced by our independent resource report."

Smith reported that Ryder Scott's assessment confirmed contingent resources of 444 billion cubic feet of CO2 and 1.3 billion cubic feet of helium, calling it "among the largest known deposits of its kind."

     The Kevin Dome is the site of the DOE-funded and assisted Big Sky Carbon Sequestration Partnership, which intends to sequester more CO2 in the dome. The project by U.S. Energy Corp plans to produce CO2 for enhanced oil recovery (EOR) and the recovery of helium and natural gas.

     Kevin Dome is part of the Sweetgass Arch. Geological structures with four-way closure, i.e., domes, are ideal for accumulating and trapping inert gases such as hydrogen, helium, CO2, and nitrogen. 




     A 2018 DOE project overview of the Big Sky Carbon Sequestration project at the Kevin Dome noted:

Kevin Dome’s geology is ideal because there are porous rocks located within the middle Duperow that are overlain by two seals made of tight carbonates and anhydrites. Additional proven seals are at shallower depths that have historically trapped oil and gas.”




     U.S. Energy Corp. plans to begin construction of a $10 million processing plant in September. Kevin Dome’s proximity to the Cutbank oil field puts it in a good position to supply CO2 for EOR. The processing plant will separate the gases into three revenue streams: CO2, helium, and natural gas.

“{CEO Smith} described recent injection testing at two disposal wells with sustained rates of over 17 million cubic feet a day, supporting a sequestration capacity of approximately 240,000 metric tons of CO2 annually. He indicated that EPA monitoring, reporting and verification plan submission is targeted for September 2025, with approval sought by spring 2026.”




     Asked about the low concentration numbers for helium, Smith noted that they were lower than expected but still well within the economic range. The company also expects to produce some nitrogen as another industrial gas from the Kevin Dome. Below is an interesting note showing the different uses for different purity levels of helium.




     Regarding the captured CO2, U.S. Energy Corp. notes that:

The captured CO₂ stream will serve dual purposes—supporting carbon management and enabling enhanced oil recovery (EOR) on our legacy oil and gas assets—creating a vertically integrated platform that captures value across multiple segments. Our broader infrastructure is being designed to accommodate third-party volumes, positioning us for potential tolling agreements and regional expansion.”

 

   


 

References:

 

U.S. Energy outlines sub-$10M processing plant spend and targets 2026 ramp in Montana industrial gas strategy. Earnings Call Insights: U.S. Energy Corp. (USEG) Q2 2025. Seeking Alpha. August 12, 2025. U.S. Energy outlines sub-$10M processing plant spend and targets 2026 ramp in Montana industrial gas strategy

Montana Project: U.S. Energy Corp. Montana Project – U.S. Energy Corp.

US Energy Acquires Montana Helium Exploration Acreage. Akap Energy. July 1, 2024. US Energy Acquires Montana Helium Exploration Acreage

Carbon Storage Atlas: The Southeast Regional Carbon Sequestration Partnership. SECARB. U.S. DOE-NETL. Site: Kevin Dome Project | netl.doe.gov

KEVIN DOME PROJECT: Duperow Formation, Toole County, Montana. Big Sky Carbon Sequestration Partnership. November 2018. U.S, DOE-NETL. Kevin-Dome-Project.PDF

U.S. Energy Corp. Reports Second Quarter 2025 Results and Provides Operational Update. News Release. U.S. Energy Corporation. August 12, 2025. News Release

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