Application of Rock Physical Model in S-Wave Velocity Estimation
详细信息
- 责任者：Xie Yuefang (Institute of Sinopec Shanghai Offshore Oil & Gas Branch Company ; Shanghai 200120 ; China) ; Zhang Ji
- 刊名：Geophysical Prospecting for Petroleum
- 出版年：2012
- 卷期：51(1)
- 关键词：横波 ; S-waves ; 物理模型 ; physical models
- 页码：p.65-70
- 图表：7 illus., 15 refs.
- 分类号：1600
- issnNo：ISSN1000-1441
- isbnNo：CN32-1284/TE
摘要
Rock physical model is an important basis of petrophysical research and S-wave velocity estimation.Based on Xu-White sand-clay mixed model,by using core testing data,P-wave and density log,clay content and porosity measurement,we calculated bulk and shear modulus of dry rock;then,the effective elastic modulus in different fluids with different saturation was calculated;finally,the P-wave velocity and S-wave velocity were computed.By comparison with actual density and P-wave data,we constantly modified parameters and carried out iterative computation.By this means,the S-wave velocity can be obtained.Through S-wave velocity estimation by using rock physical model,the problem of missing S-wave data in conventional logging data of Fangheting structure in Pinghu Gasfield was solved,which provided reliable basic data for AVP forward modeling and pre-stack AVO/AVA simultaneous inversion.
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