Actions for Neutralizing Carbonic Acid in Deep Carbonate Strata below the North Atlantic [electronic resource].

Email RIS file
Bookmark
Report an Issue

Neutralizing Carbonic Acid in Deep Carbonate Strata below the North Atlantic [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Additional Creators
Harvard College (1780- ), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
Carbon dioxide injection into deep sea sediments below 2700 m water depth and a few hundred meters to fifteen hundred meters deep in the sediment column may provide permanent geologic storage by gravitational trapping. At high pressures and low temperatures common in deep sea sediments a few hundred meters below sea floor, CO₂ will be in its liquid phase and will be denser than the overlying pore fluid. The lower density of the pore fluid provides a cap to the denser CO₂ and ensures gravitational trapping in the short term. The overall storage capacity for CO₂ in such deep sea formations below the ocean floor is primarily determined by the permeability, and will vary with seafloor depth, geothermal gradient, porosity, and pore water salinity. Furthermore, the dissemination of the injected CO₂ in the sediments and potential chemical reactions between CO₂, pore fluid and sediments will define its fate in the storage reservoir. The main objectives of our research was to evaluate the potential for sub-seabed CO₂ storage in deep sea sediments using a range of approaches including experiments, permeability analysis, and modeling. Over the course of the three-year award, our results support an important role for sub-seabed storage in a diverse portfolio of carbons sequestration options. Our analysis has shown the feasibility of this type of storage, and also emphasizes that escape or leakage from such sites would be negligible. The most difficult challenge is to overcome the low permeability of typical deep-sea sediments, and a variety of approaches are suggested for future research.
Report Numbers
E 1.99:932953
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/14/2008.
Klaus Lackner; Bruce Watson; Charles Harvey.
Type of Report and Period Covered Note
Final;
Funding Information
FG26-04NT42123
View MARC record | catkey: 14382675