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二、波及系数及其变化特点体积波及系数 E_v是指水驱油田水波及到的油藏体积与油藏总体积之比,它又可以分为厚度波及系数 E_z 和平面波及系数 E_p 两部分。它们之间的关系为:E_v=E_z×E_p (14)研究注水平面波及系数主要是利用油藏数值模拟和油层物理模型进行。文献[11]总结了戴斯(Dyes)等人所作的二维平面物理模型用 x 射线照像技术得到的平面波及系数与采出含
Second, the sweep coefficient and its variation characteristics Volume swept coefficient E_v refers to the water flooding field water reservoir volume and the total volume of the reservoir ratio, which can be divided into the thickness of the wave propagation coefficient E_z and plane wave propagation factor E_p two parts. The relationship between them is: E_v = E_z × E_p (14) Studying the waterflooding plane sweep coefficient is mainly carried out by reservoir numerical simulation and reservoir physical model. Literature [11] summarizes the 2D planar physical model made by Dyes et al.