东北石油大学学报2012，Vol.36Issue(5)：76-82,7.DOI:10.3969/j.issn.2095-4107.2012.05.015
特高含水期多层非均质油藏层间干扰因素分析
Interference mechanism of multilayer heterogenous reservoir in high water-cut stage
摘要
Abstract
Contradiction between layers is an important reason that restrict the development of heterogenous reservoir in high water-cut stage. Unpiston like flow model in multilayer reservoir was established in order to study the influence of heterogeneity on displacement efficiency, pore volume injected, recovery, liquid rate and water-cut. The seepage resistance that both before and behind water flooding front can be calculated respectively with the model, then the change of liquid rate in all layers can be studied. Displacement efficiency and pore volume injected can be calculated between different period using Darcy' s law and equal saturation surface mobile equation. The result indicated that heterogeneity between layers will effect development result dramatically. The liquid rate becomes larger and displacement efficiency becomes higher with the increase of permeability, but the increase of displacement efficiency will become slower when the layer was broken through. Displacement efficiency of low permeability layers are lower influenced by the high permeability layers. Interlayer heterogenous and mobility ratio are main factors of contradiction between layers. Interlayer heterogenous play a leading role during the early period of oil development. Role of mobility ratio rise in the high water-cut stage. This model can guide us to develop reservoir efficiently and economically to a certain degree.关键词
特高含水期/多层油藏/非均质/层间干扰/采出程度/注入孔隙体积倍数Key words
high water-cut stage/ multilayer reservoir/ heterogeneity/ contradiction between layers/ displacement efficiency/ pore volume injected分类
能源科技引用本文复制引用
安伟煜..特高含水期多层非均质油藏层间干扰因素分析[J].东北石油大学学报,2012,36(5):76-82,7.基金项目
大庆油田4000万吨持续稳产关键技术重大专项(DQP-2011-YC-KY-011) （DQP-2011-YC-KY-011）
