江苏油田注水井吸水剖面吸水段下移问题探讨

注水井吸水段逐年下移将严重影响吸水剖面的动用程度,从而引起注入水波及系数和存水率的降低,影响油田的最终采收率。通过对水井吸水段下移现象的研究,分析了其对水井和油井生产的影响,以及治理吸水段下移的重要性,并从实际生产中出发寻找促使吸水段下移的因素,对相应原因采取了酸化、补孔调剖、间接通过油井来调控的方法。本文旨在指出吸水段下移问题给江苏油田长期稳产带来的弊端,引发油田工作者的注意。

PROBE INTO WATER ABSORBING LAYER'S DECLINE OF ENTRY PROFILE IN JIANGSU OIL FIELD

The decline of water absorbing layer and its effect on injection and production wells shows that,it is important to prevent from the descending.According to the reasons found from practical production, some measures have been taken, such as acidification,perforation recruiting and entry profile adjusting,and indirectly regulation and control of oil wells.This paper has pointed out the bad influence of water absorbing layer declining on long-range stable production of J Oilfield, which needs more attentions.