Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern Taiwan
We established a stress-history-dependent porosity model of potential target rocks for CO2 geosequestration based on rock sample porosity measurements under various effective stresses (5 - 120 MPa). The measured samples were collected from shallow boreholes (< 300 m depth) drilled at the frontal...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2017-01-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
| Online Access: |
http://tao.cgu.org.tw/media/k2/attachments/v283p247.pdf
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| _version_ | 1818008120769642496 |
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| author | Wen-Jie Wu Jia-Jyun Dong Andrew Tien-Shun Lin Yun-Chen Yu Tsun-You Pan Lun-Tao Tong Ming-Hsu Li Chuen-Fa Ni Toshihiko Shimamoto |
| author_facet | Wen-Jie Wu Jia-Jyun Dong Andrew Tien-Shun Lin Yun-Chen Yu Tsun-You Pan Lun-Tao Tong Ming-Hsu Li Chuen-Fa Ni Toshihiko Shimamoto |
| author_sort | Wen-Jie Wu |
| collection | DOAJ |
| description | We established a stress-history-dependent porosity model of potential target rocks for CO2 geosequestration based on rock sample porosity measurements under various effective stresses (5 - 120 MPa). The measured samples were collected from shallow boreholes (< 300 m depth) drilled at the frontal fold in northern Taiwan. The lithology, density, and the stress-history-dependent porosity derived from shallow boreholes enabled us to predict the porosity-depth relationship of given rock formations at (burial depths of approximately 3170 - 3470 m) potential sites for CO2 geosequestration located near the Taoyuan Tableland coastline. Our results indicate that the porosity of samples derived from laboratory tests under atmospheric pressure is significantly greater than the porosity measured under stress caused by sediment burial. It is therefore strongly recommended that CO2 storage capacity assessment not be estimated from the porosity measured under atmospheric pressure. Neglecting the stress history effect on the porosity of compacted and uplifted rocks may induce a percentage error of 7.7% at a depth of approximately 1000 m, where the thickness of the eroded, formerly overlying formation is 2.5 km in a synthetic case. The CO2 injection pressure effect on the porosity was also evaluated using the stress-history-dependent porosity model. As expected, the pore pressure buildup during CO2 injection will induce an increase in the rock porosity. For example, a large injection pressure of 13 MPa at a depth of approximately 1000 m will increase the rock porosity by a percentage error of 6.7%. Our results have implications for CO2 storage capacity injection pressure estimates. |
| first_indexed | 2024-04-14T05:25:05Z |
| format | Article |
| id | doaj.art-311ae49c9099400e8cc73e037fcfa0a7 |
| institution | Directory Open Access Journal |
| issn | 1017-0839 2311-7680 |
| language | English |
| last_indexed | 2024-04-14T05:25:05Z |
| publishDate | 2017-01-01 |
| publisher | Springer |
| record_format | Article |
| series | Terrestrial, Atmospheric and Oceanic Sciences |
| spelling | doaj.art-311ae49c9099400e8cc73e037fcfa0a72022-12-22T02:10:00ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802017-01-0128324710.3319/TAO.2015.09.21.03(GSC)Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern TaiwanWen-Jie WuJia-Jyun DongAndrew Tien-Shun LinYun-Chen YuTsun-You PanLun-Tao TongMing-Hsu LiChuen-Fa NiToshihiko ShimamotoWe established a stress-history-dependent porosity model of potential target rocks for CO2 geosequestration based on rock sample porosity measurements under various effective stresses (5 - 120 MPa). The measured samples were collected from shallow boreholes (< 300 m depth) drilled at the frontal fold in northern Taiwan. The lithology, density, and the stress-history-dependent porosity derived from shallow boreholes enabled us to predict the porosity-depth relationship of given rock formations at (burial depths of approximately 3170 - 3470 m) potential sites for CO2 geosequestration located near the Taoyuan Tableland coastline. Our results indicate that the porosity of samples derived from laboratory tests under atmospheric pressure is significantly greater than the porosity measured under stress caused by sediment burial. It is therefore strongly recommended that CO2 storage capacity assessment not be estimated from the porosity measured under atmospheric pressure. Neglecting the stress history effect on the porosity of compacted and uplifted rocks may induce a percentage error of 7.7% at a depth of approximately 1000 m, where the thickness of the eroded, formerly overlying formation is 2.5 km in a synthetic case. The CO2 injection pressure effect on the porosity was also evaluated using the stress-history-dependent porosity model. As expected, the pore pressure buildup during CO2 injection will induce an increase in the rock porosity. For example, a large injection pressure of 13 MPa at a depth of approximately 1000 m will increase the rock porosity by a percentage error of 6.7%. Our results have implications for CO2 storage capacity injection pressure estimates. http://tao.cgu.org.tw/media/k2/attachments/v283p247.pdf |
| spellingShingle | Wen-Jie Wu Jia-Jyun Dong Andrew Tien-Shun Lin Yun-Chen Yu Tsun-You Pan Lun-Tao Tong Ming-Hsu Li Chuen-Fa Ni Toshihiko Shimamoto Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern Taiwan Terrestrial, Atmospheric and Oceanic Sciences |
| title | Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern Taiwan |
| title_full | Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern Taiwan |
| title_fullStr | Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern Taiwan |
| title_full_unstemmed | Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern Taiwan |
| title_short | Stress history influence on sedimentary rock porosity estimates: Implications for geological CO2 storage in Northern Taiwan |
| title_sort | stress history influence on sedimentary rock porosity estimates implications for geological co2 storage in northern taiwan |
| url |
http://tao.cgu.org.tw/media/k2/attachments/v283p247.pdf
|
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