低渗透裂缝性潜山稠油油藏物理模拟实验研究

发布时间：2018-11-24 20:26

【摘要】：为了研究低渗透裂缝性潜山稠油油藏的渗流机理和开发规律,建立了裂缝性油藏水驱和热水驱相似准则,并以渤海某低渗透裂缝性潜山稠油油藏为原型,根据相似理论,设计并建立与目标油藏相似的1m×1m×0.5m的大尺度物理模型,进行不同井网形式以及不同开发方式下的水驱油实验。通过分析不同时间下的产油量、产水量和油水饱和度等实验数据可知:水平井立体注采井网可充分利用重力分异作用,有效延缓潜山类油藏含水率上升速度;交错注水增大了注采井距,可增大注入水的波及面积;热水驱的注热效果随着注采井距的增大而逐渐变差;注入水中添加表面活性剂可提高裂缝系统的驱油效率,但同时也会降低渗吸作用的效果和基质贡献率。
[Abstract]:In order to study the percolation mechanism and development law of low permeability fractured buried hill heavy oil reservoir, the similarity criteria of water drive and hot water drive for fractured reservoir are established. A low permeability fractured buried hill heavy oil reservoir in Bohai Sea is taken as the prototype, according to the similarity theory, A large scale physical model of 1m 脳 1m 脳 0.5m similar to the target reservoir was designed and built, and the water flooding experiments were carried out under different well patterns and different development modes. Through the analysis of the experimental data of oil production, water production and oil water saturation at different time, it can be concluded that the three-dimensional injection-production pattern of horizontal wells can make full use of gravity differentiation and effectively delay the rise of water cut in buried hill reservoirs; Staggered injection increases the injection-production well spacing, which can increase the sweep area of injected water, and the heat injection effect of hot water flooding becomes worse with the increase of injection-production well spacing. The addition of surfactant in the injected water can improve the oil displacement efficiency of the fracture system, but at the same time, it can also reduce the effect of permeation and absorption and the contribution rate of matrix.
【作者单位】：中国石油大学(北京)教育部重点实验室;中海油研究总院;
【基金】：国家自然科学基金项目“各向异性裂缝页岩气藏渗流机理与理论研究”(51374222) 国家科技重大专项“中东典型碳酸盐岩油藏开发规律及技术政策研究”(2016ZX05032005-002)和“基于各向异性的特低渗透油藏井网优化与注采调控技术研究”(2016ZX05013002-001) 国家“973”计划“陆相致密油高效开发基础研究”课题五之专题一“致密油藏产能预测方法”(2015CB250905)
【分类号】：TE34;TE319

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