论文部分内容阅读
临界孔隙度模型是利用岩石的临界孔隙度来计算岩石骨架的弹性模量,岩石的临界孔隙度值受到很多因素的影响,而实际应用中通常无法获得准确的临界孔隙度值,只能选取经验临界孔隙度值,就会给岩石物理建模带来误差。本文提出了一种利用纵波速度反演岩石的临界孔隙度的方法,并且把它应用于横波预测中。实验室和测井数据应用结果表明本文提出的方法可以降低以往选取经验值带来的不确定性,并且能够为横波预测提供准确的临界孔隙度值,提高了横波预测的精度。
The critical porosity model is to use the critical porosity of rock to calculate the elastic modulus of the rock skeleton. The critical porosity value of rock is affected by many factors, but in practice it is usually not possible to obtain the accurate critical porosity value. Only the experience The critical porosity value will give errors to the petrophysical modeling. This paper presents a method of using P-wave velocity to invert the critical porosity of rock and apply it to shear-wave prediction. The results of laboratory and logging data application show that the proposed method can reduce the uncertainty caused by the selection of empirical values in the past and provide accurate critical porosity values for the prediction of transverse waves and improve the accuracy of transverse-wave prediction.