弹性阻抗对比分析

doi:10.3969/j.issn.1673-8926.2010.03.021

Lithologic Reservoirs ›› 2010, Vol. 22 ›› Issue (3): 110-113.doi: 10.3969/j.issn.1673-8926.2010.03.021

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Comparative analysis of elastic impedance

WANG Hao¹， LUO Bing²， LI Ting³

1. Deyang Branch of Exploration and Development Research Institute of Southwest Oilfield Company， Sinopec， Deyang 618000， China； 2. Research Institute of Exploration and Development， Jianghan Oilfield Company， Sinopec， Qianjiang 433124， China； 3. Kingdream Public Limited Company， Qianjiang 433124， China

Online:2010-09-15 Published:2010-09-15

Abstract

Abstract:

Presently, there are variously methods for calculating elastic impedance by different seismic elastic impedance inversion softwares, and seismic elas tic impedance inversion were often simply applied though some requirements hadn’t been discussed in detail, which causes yield difficulties for actual productions. Therefore, based on four typical types of gas-bearing sandstone models, calculation accuracy of elastic impedance（EI）, reflected impedance（RI） and generalized elastic impedance （GEI） are analyzed and compared. Moreover, based on Biot-Gassman theory, fluid replacement is applied for gas-bearing sandstones model advanced by Ostrander, and the sensitivity to fluid of different elastic impedance is discussed when water saturation changed. The following conclusions can be obtained through the calculation of four types of gas-bearing sandstone models: As for Class Ⅰ and Class Ⅳ, Zoeppritz equations can be substituted forthe EI, RI and GEI when the incident angle is less than 40 ;As forClass Ⅱ, Zoppritz equations can also be substituted when the incident angle is less than 30 ; However, these three kinds of elastic impedance can not be applied for Class Ⅲ; The idea of the partial derivative is applied for the gas-bearing sandstone models advanced by Ostrander, the result shows that, RI is more sensitive to fluid than EI and GEI as incident angle is bigger.

Key words: clastic rocks, seismic reservoir, seismic stratigraphy, sequence stratigraphy, seismic sedimentology, production seismology, seismic technology

WANG Hao，LUO Bing，LI Ting. Comparative analysis of elastic impedance[J].Lithologic Reservoirs, 2010, 22(3): 110-113.

References

［1］ Lu Shaoming，McMechan G A.Elastic impedance inversion of multichannel seismic data from unconsolidated sediments containing gas hydrate and free gas［J］. Geophysics，2004，69（1）：164-179.
［2］ Whitcombe D N，Connolly P A，Reagan R L，et al. Extended elastic impedance for fluid and lithology prediction［J］. Geophysics，2002，67（1）：63-67.
［3］刘云武，吴海波，刘金平.大庆长垣南部扶杨油层河道砂体预测方法与应用［J］.大庆石油地质与开发，2006，25（5）：106-108.
［4］张奎，倪逸.三种弹性波阻抗公式比较［J］.石油地球物理勘探，2006，41（增刊）：7-11.
［5］ Connolly P. Elastic impedance［J］. The Leading Edge，1999，18：438-452.
［6］ Santos L T，Tygel M，Buginga R. Reflection Impedance［C］. SEG 72nd Annual Meeting expanded abstracts，Salt Lake City，Utah，2002.
［7］马劲风.地震勘探中广义弹性阻抗的正反演［J］.地球物理学报，2003，46（1）：118-124.
［8］ Rutherford S R，Williams R H. Amplitude-versus-offset variations in gas sands［J］. Geophysics，1989，54（6）：680-688.
［9］ Castagna J P，Swan H W.Principles of AVO crossplotting［J］. The Leading Edge，1997，16（4）：337-344.
［10］ Gomez C T，Tatham R H. Sensitivity analysis of seismic reflectivity to partial gas saturation［J］. Geophysics，2007，72（3）：45-57.
［11］ Ostrander W J. Plane-wave reflection coefficients for gas sands at nonormal angles of incidence［J］. Geophysics，1984，49（10）：1 637-1 648.

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