泥岩涂抹定量计算的对比分析及应用

Comparison Analysis and Application of the Shale Smear Quantitative Calculation

通过建立地质模型对泥岩涂抹计算的常用公式进行分析,认为泥岩涂抹势(CSP)容易受人为因素的影响,涂抹因子(SSF)具有较为严重的尾部效应,而断层泥比率(SGR)的应用只适用于地层分布均匀的地层;指出了其计算公式中存在的优缺点和适用范围。在此基础上,通过对比分析建立了新的更符合实际需要的计算公式;修正的泥岩涂抹势(修正CSP)在高邮凹陷中的应用获得了较好的效果。

The shale smear was a common phenomena existing in fault zones,it was important to the fault sealing.The formulae of shale smear mostly include(Clay Shale Potential)CSP,(Shale Smear Factor)SSF and(Shale Gouge Ratio)SGR,and these formulae are found something wrong through analysis based on the geological model.It is considered that CSP is influenced by man-made factor,it points out the advantage,the disadvantage and application of these formulae.Based on the study the new formulae,the revised CSP is built up,and it is applied well in Gaoyou Sag.