Abstract
To meet the Paris Agreement target of limiting global warming to 2 °C or below it is widely accepted that Carbon Capture and Storage (CCS) will have to be deployed at scale. For the first time, experiments have been undertaken over six cycles of water and supercritical CO2 injection using a state of the art high flow rig recreating in-situ conditions of near wellbore injection into analogue storage reservoir rocks. The results show that differential pressure continuously increases over multiple injection cycles. Our interpretation is that multiple cycles of injection result in a reduced effective permeability due to increased residual trapping acting as a barrier to flow resulting in reduced injectivity. This is supported by numerical modelling and field observations that show CO2 injectivity and its variation over time will be affected by multiple cycles of injection. These results suggest that loss of injectivity must be incorporated into the injection strategy and that careful management of cyclic injection will create the opportunity to increase residual trapping.
| Original language | English |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 9 |
| Journal | International Journal of Greenhouse Gas Control |
| Volume | 80 |
| Early online date | 24 Nov 2018 |
| DOIs | |
| Publication status | Published - 31 Jan 2019 |
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Keywords
- CO2
- CO2 storage
- cyclic CO2 injection
- injection cycles
- residual trapping
- supercritical CO2
Cite this
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Cyclic CO2 – H2O injection and residual trapping : implications for CO2 injection efficiency and storage security. / Edlmann, K.; Hinchliffe, S.; Heinemann, N.; Johnson, G.; Ennis-King, J.; McDermott, C. I.
In: International Journal of Greenhouse Gas Control , Vol. 80, 31.01.2019, p. 1-9.Research output: Contribution to journal › Article
TY - JOUR
T1 - Cyclic CO2 – H2O injection and residual trapping
T2 - implications for CO2 injection efficiency and storage security
AU - Edlmann, K.
AU - Hinchliffe, S.
AU - Heinemann, N.
AU - Johnson, G.
AU - Ennis-King, J.
AU - McDermott, C. I.
PY - 2019/1/31
Y1 - 2019/1/31
N2 - To meet the Paris Agreement target of limiting global warming to 2 °C or below it is widely accepted that Carbon Capture and Storage (CCS) will have to be deployed at scale. For the first time, experiments have been undertaken over six cycles of water and supercritical CO2 injection using a state of the art high flow rig recreating in-situ conditions of near wellbore injection into analogue storage reservoir rocks. The results show that differential pressure continuously increases over multiple injection cycles. Our interpretation is that multiple cycles of injection result in a reduced effective permeability due to increased residual trapping acting as a barrier to flow resulting in reduced injectivity. This is supported by numerical modelling and field observations that show CO2 injectivity and its variation over time will be affected by multiple cycles of injection. These results suggest that loss of injectivity must be incorporated into the injection strategy and that careful management of cyclic injection will create the opportunity to increase residual trapping.
AB - To meet the Paris Agreement target of limiting global warming to 2 °C or below it is widely accepted that Carbon Capture and Storage (CCS) will have to be deployed at scale. For the first time, experiments have been undertaken over six cycles of water and supercritical CO2 injection using a state of the art high flow rig recreating in-situ conditions of near wellbore injection into analogue storage reservoir rocks. The results show that differential pressure continuously increases over multiple injection cycles. Our interpretation is that multiple cycles of injection result in a reduced effective permeability due to increased residual trapping acting as a barrier to flow resulting in reduced injectivity. This is supported by numerical modelling and field observations that show CO2 injectivity and its variation over time will be affected by multiple cycles of injection. These results suggest that loss of injectivity must be incorporated into the injection strategy and that careful management of cyclic injection will create the opportunity to increase residual trapping.
KW - CO2
KW - CO2 storage
KW - cyclic CO2 injection
KW - injection cycles
KW - residual trapping
KW - supercritical CO2
UR - http://www.scopus.com/inward/record.url?scp=85057103134&partnerID=8YFLogxK
UR - https://www.research.ed.ac.uk/portal/en/publications/cyclic-co2--h2o-injection-and-residual-trapping-implications-for-co2-injection-efficiency-and-storage-security(aea8f8dd-1e7d-42d5-968f-4adc61be4bcc).html
U2 - 10.1016/j.ijggc.2018.11.009
DO - 10.1016/j.ijggc.2018.11.009
M3 - Article
VL - 80
SP - 1
EP - 9
JO - International Journal of Greenhouse Gas Control
JF - International Journal of Greenhouse Gas Control
SN - 1750-5836
ER -