边底水稠油油藏单砂体水淹规律量化研究

摘要：渤海A油田是典型的边底水合采的稠油油藏，基本没有无水采油期, 笼统注水后表现出注水井各层段吸水不均匀,注入水单层、单向突进问题比较严重，生产井的含水上升快，产量递减加快的特点,为进一步挖潜油田剩余油，全面掌握各单砂体的水淹状况是非常必要的。传统的油田小层平面水淹图的研究是将注水井的注入水劈分到对应的油井上，然而，对这种边底水能量较强的天然水水侵量的研究尚未见到报道。笔者将等值渗流阻力法应用到边底水水侵量的计算中，摸索出一套定量分析边底水稠油油藏单砂体水淹规律研究的方法，并将其计算结果与油田实际生产动态对比，相对误差较小，为海上同类油田水淹规律的研究提供了一种新的思路。

Water flooding Disciplinarian Study for Heavy Oil Reservoir with Edge Water and Bottom Water

Abstract: Bohai A oilfield is a large offshore fluvial depositional reservoirs composed of meandering channels and multiple sands with complex oil/water systems, All wells were commingle produced during initial oilfield development, showing steep increase in water cut, low oil recovery, and fast production declining from sands supported by edge water or bottom water. In order to improve oil recovery, it is necessary to study the water flooding disciplinarian for single important sand. The traditional method was calculating the injection water spread to oil well, however, the natural aquifer was not considered. This paper has analyzed the aquifer spread to oil wells by equivalent permeability resistance method, which was appropriate for heavy oil reservoir with edge water and bottom water. This method was reasonable proved by reservoir dynamic, and also provide a new way for study in some other similar reservoirs.