THE Analysis of Shera-Velocity Prediction Error by the Xu-White Model
详细信息
- 责任者：Bai Junyu (Institute of Geophysical Prospecting ; SINOPEC ; Nanfing 210014 ; China) ; Song Zhixiang
- 刊名：Xinjiang Oil & Gas
- 出版年：2011
- 卷期：7(3)
- 关键词：横波 ; S-waves ; 速度分析 ; velocity analysis ; 误差 ; errors
- 页码：p.9-14
- 图表：10 illus., 1 table, 14 refs.
- 分类号：1600
- issnNo：ISSN1673-2677
- isbnNo：CN65-1253/TE
摘要
The authors developed a method to predict shear-wave velocity in shale sandstone, using the Gassmann’s equations and the Xu-White model. Numerical experiments show the variable aspect ratio method provides an important improvement in the application of the Xu-White model for sand-clay mixtures and allows for a variable aspect ratio log to be introduced into Xu-White model replacing the fixed aspect ratio assumption. This method has shown a significant improvement in predicting the velocities over the conventional Xu-White model.