| CPC E21B 41/0064 (2013.01) [B65G 5/005 (2013.01); E21B 49/02 (2013.01); E21B 49/087 (2013.01)] | 22 Claims |

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1. A method of sequestering carbon-containing materials, the method comprising:
obtaining a material comprising particles of biochar dispersed in a liquid, the liquid comprising at least one of bio-oil or brine; and
providing the material for injection into an underground well.
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