数模技术在裂缝性油藏不稳定注水中的应用——以火烧山油田H_3油藏为例

APPLICATION OF NUMERICAL SIMULATION TECHNOLOGY IN UNSTABLE WATER INJECTION IN FRACTURED RESERVOIR:A CASE STUDY OF H3 LAYER IN THE HUO SHAOSHAN OILFIELD

火烧山油田H3油藏为裂缝性低渗透砂岩油藏,裂缝发育、储层非均质性极强,是制约油藏开发的主要因素,而不稳定注水是减小储层非均质性不利影响的开发措施。针对油藏地质特征和开采现状,有效利用油藏数值模拟技术,优化不稳定注水参数及方案,并经现场试验,取得了较好的效果。为火烧山油田高含水期提高采收率探索了一条方便、有效、经济的途径。同时,也实现了油描到动态分析再到实际生产的转换。

This article can be considered as a typical example:converting the technology study and scientific achievements of fine reservoir description to productivity. The H3 layer in the Huo Shaoshan oilfield is fractured low permeable sandstone reservoir. Reservoir fractures and strong heterogeneity are main influencing factors of reservoir development, whereas unstable water injection is an important development measure to decrease the adverse effect of reservoir heterogeneity. According to its geology character and status of development, this paper effectively used reservoir numerical simulation technology, selected the water-injection mode, water-injection time and parameter and got a good result through field test. It finds a convenient,effective and economic way to improve waterflood effect for high water cut stage of the Huo Shaoshan oilfield. Meanwhile, it transforms fine reservoir description into dynamic analysis,which is sequentially converted into practical production.