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低渗油藏一般具有岩性变化快、油水关系复杂、物性不好等特征,因此对其进行开发的难度较大,特别是中后期的稳产面临严峻的考验。本文针对胡尖山油田元72区延9复杂油藏稳产策及方法进行了深入研究。通过对油藏地质精细刻画,搞清了砂体的空间展布及叠置关系;从单井流体类型识别、剖面油水关系对比分析了油藏原始油水关系及分布规律;结合油藏的开发效果及效果,提出了该油藏具有油水关系控水、储层条件控产的特征;综合单井地质特征、单井动态特征分类和井组划分及井组动态分析提出了目前油藏开发所面临的稳产问题。根据稳产所面临的问题,结合油藏地质和生产动态提出了补孔、转层、转注、关井、提液、控液、注水量调整、堵水等稳产技术对策。
Generally, the low permeability reservoirs are characterized by rapid changes in lithology, complex oil-water relations and poor physical properties. Therefore, it is more difficult to develop them, especially in the middle and late stages. In this paper, in-depth exploration of Huainan oil field Yan 72 Yan 9 complex reservoir stability and methods and methods in-depth study. By finely depicting the reservoir geology, the spatial distribution and overlying relationship of the sand body are clarified. The relationship between the original oil-water relationship and its distribution is analyzed from the single-well fluid type identification and the cross-section oil-water relationship. Combining with the reservoir development And its effect, the paper puts forward that the reservoir has the characteristics of water-oil relationship control and reservoir production control. Based on the comprehensive single-well geological characteristics, single-well dynamic characteristics classification and well group division and well group dynamic analysis, The problem of steady production. According to the problems of stable production, combined with the reservoir geology and production dynamics, the paper put forward countermeasures of stable production technology such as fill hole, transfer layer, turn-injection, shut-in well, lift liquid, control liquid, water injection quantity adjustment and water shutoff.