一种水驱剩余油物模实验相似转化方法数模验证

Verification for a New Similarity Transformation Method of Water Flooding Physical Experiments

在水驱剩余油物理模拟实验研究中,目前提出了一种新的相似转化方法,即通过运动速度(渗流真实速度)相等求取的物模实验排量,在岩心物性、流体性质相似,几何尺寸成比例的不同物理模型中驱替,其剩余油分布规律及开采效果相似,该规律是文中相似方法的核心规律,它可以有效地应用到室内物理模型实验对矿场剩余油分布规律的研究中去。此文重点考虑了重力、毛管力对运动速度相似转化方法的影响与修正,并设计了20余套数值模拟方案,验证了这种方法的准确性及实用性。

In the experimental study of water flood remaining oil, a new similarity transformation method was currently developed. In the different displacement models with the same core, the same fluid properties, and the proportional geometric dimensions, equal velocity （real speed） was adopted to obtain the pump displacement and the remaining oil distribution and exploitation performance are similar. This law is the core law in the paper, it can be effectively applied to the physical model experiment on the study of re- maining oil distribution. In order to verify the accuracy and practicability of this method, this paper designs more than 20 numerical simulation schemes to research. Conclusions obtained from data analysis： remaining oil distribution and exploitation performance between models conversed by equal velocity similarity method has better similarity, and experimental operation is relatively simple and has strong practicability.