用声波测井资料确定碎屑岩储集层的胶结指数

本文通过讨论Biot系数β与地层因素F之间的关系，定义了一个参数Fac=β-1φ-1.5，并用纯砂岩的实验资料证明了该参数与地层因素F是相等的．在实际应用中，为了获得系数β和孔隙度φ，我们首先建立了纯地层中声波传播的速度方程．然后，用弹性模量的并联等效公式把它扩展到泥质地层中．最后。用实例对文中的结果进行检验．

Through discussing the relation of Biot's coefficint βand the formation factor F, a parameter Fac is difined: Fac =β-1φ-1.5. Using the experimental data of pure sandstone, it is proved that Fac = F. in the real application, for the determination of the porosity op and Biot's coefficint β, we build up a velocity equation for the elastic wave propagation in a pure sandstone, and then extend it to clay-sandstone by the parallel equivalence of elastic modulus in the elasticity theory. Finally, so me examples of application are given