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Carbon dioxide capture, transportation and storage - Carbon dioxide storage using enhanced oil recovery (CO2-EOR)
This document provides requirements for demonstrating that the site in question is adequate to provide safe, long-term containment of CO2, for demonstrating that the CO2 flood is operated in a way to assure containment of the CO2 in the EOR complex, and for quantifying associated storage.
This document applies to CO2 that is injected in enhanced recovery operations for oil and other hydrocarbons, including natural gas, (CO2-EOR) for which quantification of CO2 that is safely stored long-term in association with the CO2-EOR project is sought. Recognizing that some CO2-EOR projects use non-anthropogenic CO2 in combination with anthropogenic CO2, the document also shows how allocation ratios can be utilized for optional calculations to quantify the portion of associated storage comprised of anthropogenic CO2 (see Annex A).
This document does not apply to quantification of CO2 injected into reservoirs where no hydrocarbon production is anticipated or occurring.
Storage of CO2 in geologic formations that do not contain hydrocarbons is covered by ISO 27914 even if located above or below hydrocarbon producing reservoirs. If storage of CO2 is conducted in a reservoir from which hydrocarbons were previously produced but will no longer be produced in paying or commercial quantities, such storage would be subject to the requirements of ISO 27914.
This document addresses:
This document does not address the following:
NOTE Some authorities can require other GHG components of the CO2 stream to be quantified.
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