萨中开发区浅调剖应用效果分析

Analysis of shallow profile modification application effect in Sazhong Development Area

随着油田开发时间的延长,层间干扰加剧,地层的非均质性矛盾更加突出。萨中开发区虽然开展了细分注水,但由于隔层厚度、分层工艺等问题,使得部分注水层段中,存在无法单卡细分的高渗透层。为解决特高含水期开发中这一矛盾,应用浅调剖技术,吸水厚度比例增加6.7%,连通采油井见到了较好效果,平均单井日产油增加0.2t,含水下降0.3个百分点,取得了较好的效果。为今后浅调剖优化方案设计和进一步提高采收率提供了宝贵的经验。

As the oilfield has been developed deeply,the disturbance in the surface has been seriously,and the heterogeneity of reservoirs has become more seriously.Sazhong Development Area has implemented subdivided water injection,but there are some problems,such as interlayer thickness,separate zone technique and etc,which make high permeability streaks with irrealizable single packing off subdivided in some of water injection intervals.With application of shallow profile modification technique,we have solved this problem and achieved better effectiveness.The percentage of hygroscopic thickness has increase 6.7 percent,so the interconnected production wells have achieved better effectiveness and the oil production of single well has increased 0.2t per day and the water content has decreased 0.3 percent.This offers precious experiment for optimize plan of shallow profile modification and further enhanced oil recovery.