提高水淹规律认识精度的新方法

A new method to improve recognition accuracy of water-flooded law

水淹图是直观表达储层水淹规律的重要地质图件,含水率与注水倍数图版的正确与否直接决定着水淹规律认识是否正确。物理模拟实验过程中发现,在注水早、中期,含水率与注水倍数实验数据点常常缺失,最终造成水淹图绘制失真。通过岩心级别数值模拟,对含水率与注水量关系图版进行了修正,提高了水淹规律认识精度。

The water-flooded map is an important geological one to visually express the water-flooded law of reservoirs. The charts of water cut and injection volume multiples are correct or not,which directly determine whether the water-flooded law is correct. However,during physical simulation experiments,it was found that in the early and middle stages of water injection,the experimental data points of water cut and injection volume multiples were often missing,which eventually caused the distortion of water flooding drawing. In this paper,the numerical simulation in core scale was used to correct the relationship between water content and water injection volume,which improves the recognition accuracy of flooding law.