Application of seismic anisotropy fluid detection technology in the Ken 71 well block of Shengli Oilfield

Li-Fei Bi, Zhong-Ping Qian, Feng Zhang, Xiao-Yan Chen, Shi-Chun Han, Mark Chapman

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

On the basis of Chapman's (2003) model, as the seismic wave incidences angles vary from 0 degrees to 45 degrees while propagating in anisotropic media (HTI), the slow S-wave will, sufferred by serious attenuation and dispersion and is sensitive to fluid viscosity but the P- and fast S-waves don't. For slow S waves propagating normal to fractures, the amplitudes are strongly affected by pore fluid. So, the slow S-wave can be used to detect fractured reservoir fluid information when the P-wave response is insensitive to the fluid. In this paper, 3D3C seismic data from the Ken 71 area of Shengli Oilfield are processed and analyzed. The travel time and amplitude anomalies of slow S-waves are detected and correlated with well I log data. The S-wave splitting in a water-bearing zone is higher than in an oil-bearing zone. Thus, the slow S-wave amplitude change is more significant in water-bearing zones than in oil-bearing zones.

Original languageEnglish
Pages (from-to)117-124
Number of pages8
JournalApplied Geophysics
Volume8
Issue number2
DOIs
Publication statusPublished - Jun 2011

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