摘要
Laboratory experiments were conducted to measure the compressional wave velocities under hydrostatic pressure in Shirahama Tako sandstones with a porosity of 12% and 24%,respectively.In dry samples,the pressure dependence of velocity is ascribed to the difference in pore structures.Velocities were also measured to map the movement of the injected CO2 within water-saturated samples during CO2 injection.In the water-saturated samples,velocity changes caused by the CO2 injection are typically on the order of 10%.A series of seismic tomography experiments are conducted on porous sandstone samples to demonstrate the use of cross-well seismic profiling for monitoring the migration of CO2 in geological sequestration projects.
Laboratory experiments were conducted to measure the compressional wave velocities under hydrostatic pressure in Shirahama and Tako sandstones with a porosity of 12% and 24%, respectively. In dry samples, the pressure dependence of velocity is ascribed to the difference in pore structures. Velocities were also measured to map the movement of the injected CO2 within water-saturated samples during CO2 injection. In the water-saturated samples, velocity changes caused by the CO2 injection are typically on the order of 10%. A series of seismic tomography experiments are conducted on porous sandstone samples to demonstrate the use of cross-well seismic profiling for monitoring the migration of CO2 in geological sequestration projects.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第6期1002-1007,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
CO2
弹性波
检测
饱和砂岩
流动性
P-wave velocity, sandstone, pore structure, monitoring, carbon dioxide, geological sequestration
