CO₂ in an Unminable Lignite Seam

CO₂ will be injected into unminable lignite seams in northwestern North Dakota. The injected CO₂ is trapped by naturally bonding to the surfaces of the fractured lignite. The injected CO₂ also has the potential to displace methane occupying the coal fractures. This validation test will give valuable information regarding lignites for both CO₂ sequestration and enhanced coalbed methane production.

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