Core-scale geophysical and hydromechanical analysis of seabed sediments affected by CO2 venting
Core-scale geophysical and hydromechanical analysis of seabed sediments affected by CO2 venting
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受二氧化碳排放影响的海底沉积物的岩心尺度地球物理和流体力学分析
DOI:
10.1016/j.ijggc.2021.103332
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发表时间:
2021
影响因子:
3.9
通讯作者:
Falcon-Suarez I
中科院分区:
文献类型:
--
作者:
Falcon-Suarez I
Safe offshore Carbon Capture Utilization and Storage (CCUS) includes monitoring of the subseafloor, to identify and assess potential CO2leaks from the geological reservoir through seal bypass structures. We simulated CO2-leaking through shallow marine sediments of the North Sea, using two gravity core samples from ∼1 and ∼2.1 m below seafloor. Both samples were subjected to brine−CO2flow-through, with continuous monitoring of their transport, elastic and mechanical properties, using electrical resistivity, permeability, P-wave velocity and attenuation, and axial strains. We used the collected geophysical data to calibrate a resistivity-saturation model based on Archie’s law extended for clay content, and a rock physics for the elastic properties. The P-wave attributes detected the presence of CO2in the sediment, but failed in providing accurate estimates of the CO2saturation. Our results estimate porosities of 0.44 and 0.54, a background permeability of ∼10−15and ∼10-17m2, and maximum CO2saturation of 18 % and 10 % (±5 %), for the sandier (shallower) and muddier (deeper) sample, respectively. The finer-grained sample likely suffered some degree of gas-induced fracturing, exhibiting an effective CO2permeability increase sharper than the coarser-grained sample. Our core-scale multidisciplinary experiment contributes to improve the general interpretation of shallow sub-seafloor gas distribution and migration patterns.
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影响因子:
3.9
作者:
A. Lichtschlag;M. Haeckel;David Olierook;Kate Peel;A. Flohr;C. Pearce;C. Marieni;R. James;D. Connelly
通讯作者:
D. Connelly
影响因子:
2.6
作者:
J. Börner;V. Herdegen;J. Repke;K. Spitzer
通讯作者:
J. Börner;V. Herdegen;J. Repke;K. Spitzer
影响因子:
3.9
作者:
M. Dean;J. Blackford;D. Connelly;R. Hines
通讯作者:
M. Dean;J. Blackford;D. Connelly;R. Hines
DOI:
10.2118/5505-pa
发表时间:
1976
期刊:
Journal of Petroleum Technology
影响因子:
--
作者:
E. C. Thomas
通讯作者:
E. C. Thomas
影响因子:
2.6
作者:
C. Deusner;E. Kossel;N. Bigalke;M. Haeckel;Shubhangi Gupta;M. Freise;H. Anbergen;T. Wille
通讯作者:
T. Wille