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饱和度的计算方法目前有很多种,岩石电阻率法是比较常用的方法;一般常用乘幂函数来拟合公式确定岩电参数,在样品数较少的情况下,有时一两个样品点就会引起拟合公式很大的变化,从而使得a、b、m、n值差别很大,使得饱和度变化较大;本文收集大量的岩电样品重点分析了地层因素与孔隙度拟合引起的误差并提出误差相对较小的改进方法,避免了由岩电参数a、m的求取引起的传递误差,并验证了改进方法计算的饱和度精度,符合储量规范要求,从而为储量研究提供准确的饱和度参数。
Currently, there are many methods for calculating the saturation. The rock resistivity method is a commonly used method. Generally, the power function is usually used to fit the formula to determine the parameters of rock electrical. In the case of small number of samples, sometimes one or two sample points Will lead to great changes in the fitting formula, which makes a, b, m, n values vary greatly, making the saturation changes greatly; a large number of samples collected in this article focused on the analysis of rock formation and porosity fitting Error and propose a relatively small error improved method to avoid the transfer error caused by the calculation of rock electrical parameters a, m, and verify the accuracy of the improved method of calculation accuracy, in line with the requirements of reserves, so as to provide accurate reserves research Saturation parameter.