Patent ID: 7922643
Filing Date: 2011-04-12
Classification: B01D,E21B,Y02C,Y02P

Abstract:
1. An in-situ method for separating a greenhouse gas from a non-greenhouse gas and sequestering the greenhouse gas, comprising: a) selecting a gas stream from a stationary source of production, said gas stream comprising a mixture of greenhouse and non-greenhouse gas; b) selecting a subsurface formation comprising a deep water-laden layer overlain by at least one overlying layer, said water-laden layer being capable of sequestering at least a portion of the greenhouse gas while being substantially incapable of sequestering the non-greenhouse gas under the same injection conditions, thereby being capable of separating the non-greenhouse gas from the greenhouse gas; c) pressurizing said gas stream; d) delivering said pressurized gas stream into an injection well having an inlet communicating with said gas stream and an outlet within said water-laden layer, thereby introducing said gas stream under pressure into said water-laden layer; e) sequestering at least a portion of said greenhouse gas and separating at least a portion of said non-greenhouse gas from said greenhouse gas within said water-laden layer; and f) venting said separated non-greenhouse gas from said water-laden layer.