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Underwater scrubbing of CO2 from CO2-containing hydrocarbon resources

  • US 6,620,091 B1
  • Filed: 09/14/2001
  • Issued: 09/16/2003
  • Est. Priority Date: 09/14/2001
  • Status: Active Grant
First Claim
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1. A method for removing CO2 from a CO2-containing hydrocarbon asset, the method comprising:

  • a) contacting a CO2-containing hydrocarbon asset with an aqueous liquid stream at an underwater location so that at least a portion of the CO2 in the hydrocarbon asset is dissolved into the aqueous liquid stream, creating a CO2-depleted hydrocarbon asset and a CO2-enriched aqueous stream, wherein during contact with the aqueous liquid stream, temperature, pressure, pH, and contacting duration are sufficient to ensure that at least about 90% by weight of the hydrocarbon asset is in a gas phase;

    b) separating the CO2-enriched aqueous stream from the hydrocarbon asset; and

    c) disposing of the CO2-enriched aqueous stream in at least one of a marine environment, a terrestrial formation or combination thereof.

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