Carbon Geocycle Inc. Receives Patent for Greenhouse Gas Capture and Sequestration Technology

Strategic Insights -

Researchers at Carbon Geocycle Inc. have developed a novel method for capturing and sequestering greenhouse gases, specifically carbon dioxide, in coal seams. The patented technology uses a mixture stream comprised of dissolved carbon dioxide and water, which is injected into the coal seam. This process allows for the controlled sequestration of carbon dioxide within connected fractures without swelling the coal seam, reducing the environmental impact of greenhouse gas emissions.

Key Takeaways:

  • The patented technology uses a mixture stream of dissolved carbon dioxide and water to sequester carbon dioxide in coal seams.
  • The process involves injecting the mixture stream into the coal seam, where the carbon dioxide is preferentially absorbed by the coal, moving methane towards a collector.
  • The technology controls the concentration of carbon dioxide within the mixture stream and the partial pressure that the mixture stream is injected into the coal seam.
  • The invention includes a method for determining the initial natural pressure of the coal seam and maintaining it during injection at or below the initial natural pressure.
  • The patented method also includes performing step rate tests to determine connectivity of fractures within the coal seam.
  • The invention allows for the controlled sequestration of carbon dioxide within connected fractures, reducing the environmental impact of greenhouse gas emissions.
  • The technology is designed to move methane from the coal seam towards a collector based on the composition of the coal seam and the concentration of carbon dioxide.
  • The claimed methods and systems are useful for sequestering carbon dioxide in coal seams, reducing greenhouse gas emissions, and mitigating the effects of climate change.

Statistics:

  • The patent number is 12385374.
  • The patent was filed on August 12, 2022, and published online on August 12, 2025.
  • The mixture stream is comprised of 1-15% carbon dioxide.
  • The patented technology uses non-point source capture of greenhouse gases, which is considered more energy and capital intensive than traditional methods.
  • The invention includes a method for performing tight radius drilling within the coal seam to increase the exposed surface area and absorption rate of carbon dioxide.

Sources:

  • Patent number: 12385374
  • Patent title: Methods and systems for greenhouse gas capture and sequestration
  • Patent filing date: August 12, 2022
  • Patent publication date: August 12, 2025
  • https://ppubs.uspto.gov/pubwebapp/external.html?q=(12385374)&db=USPAT&type=ids
  • NewsRx LLC, Carbon Geocycle Inc. Receives Patent for Greenhouse Gas Capture and Sequestration Technology, 2025.