摘要
在复杂的正旋回砂砾岩储层中 ,从两口井系统地采集了不同岩性的典型样品 ,在不同的有效压力及两种状态 (气饱和和水饱和 )下测试了岩石的纵、横波速度。利用回归分析得出纵、横波速度与孔隙度、泥质含量线性相关。回归公式应用于声波测井资料的结果显示 ,对于特定的地区 ,岩石波速和孔隙度、泥质含量关系的具体表达式应从井资料经统计分析得到 。
The typical samples with different lithological characters are collected from two wells of representative reservoir consisting of sandstone and conglomerate of positive rhythm.Compressional and shear wave velocities,porosity,and clay content are measured in two states fully saturated with water( S w =1) and gas( S w=0),respectively.The regression analysis shows that the velocities are liner relationship related to porosity and clay content.Using such regression formula to sonic logging data indicates that the coefficients of the formula should be determined by statistical method about specific area,instead of fixed values.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
2001年第3期379-384,共6页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
国家自然科学基金!资助项目 (497742 39)
