CPC E21B 41/0064 (2013.01) [C09K 8/64 (2013.01); E21B 43/26 (2013.01)] | 18 Claims |
1. A method for subsurface sequestration of carbon, the method comprising:
injecting, into a subterranean zone at least partially saturated with saline water, a treatment composition comprising a mineralization accelerant
injecting carbon in the form of carbon dioxide into the subterranean zone; the carbon dioxide reacting in the subterranean zone with the mineralization accelerant to form bicarbonate; and
sequestering at least a portion of the carbon in the subterranean zone by precipitation in the subterranean zone of a carbonate mineral formed from reaction in the subterranean zone of the bicarbonate with metal cations dissolved in the saline water.
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