Advances in Earth Science ›› 2015, Vol. 30 ›› Issue (10): 1119-1126. doi: 10.11867/j.issn.1001-8166.2015.10.1119.

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Research Progress of 4D Multicomponent Seismic Monitoring Techniquein Carbon Capture and Storage

Yang Yang( ), Jinfeng Ma( ), Lin Li   

  1. 1. Department of Geology,Northwest University, Xi’an 710069, China
    2. The State Key Laboratory of Continental Dynamics,Northwest University,Xi’an710069,China
  • Received:2015-05-12 Revised:2015-08-30 Online:2015-10-20 Published:2015-10-20

Yang Yang, Jinfeng Ma, Lin Li. Research Progress of 4D Multicomponent Seismic Monitoring Techniquein Carbon Capture and Storage[J]. Advances in Earth Science, 2015, 30(10): 1119-1126.

Carbon Capture and Storage (CCS) technology is currently recognized as the most effective way to mitigate greenhouse gas. CO2 geological storage is the key technique in CCS, and monitoring the safety of CO2 geological storage runs through the whole CCS project from CO2 injection and after closure. 4D seismic monitoring technique is the most effective way to monitor the leakage of CO2 and to confirm the safety of CO2 sequestration. Traditional 4D seismic technology predicts saturation of CO2 and pressure distribution in reservoir by comparing two vintages seismic amplitude and travel time from two or repeated 3D seismic data before and after CO2 injection or between two different injection stages. 4D multicomponent seismic monitoring has a great potential to be explored. Because shear wave velocity is sensitive to pressure, we may discriminate pore pressure distribution by using 4D multicomponent seismic information. For anisotropy reservoir, we may confirm the change of reservoir fissures and fractures as well as reservoir and caprock stress status before and after CO2 injection through comparing difference of travel time and amplitude of PS1 and PS2 wave in two vintages seismic acquisition. Furthermore, we will find out potential CO2 leakage risk area more accurately and evaluate the safety of CO2 sequestration more reliablely by combining rock physics experiment and dipole sonic log data with 4D multicomponent seismic monitoring.

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