底水稠油油藏人工隔层形态及影响因素研究  

Study on Artificial-Interlayer Barrier Distribution and Influencing Factors in Bottom-Water Heavy Oil Reservoir

作　　者：王福林[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163412

出　　处：《海洋石油》2014年第1期52-56,共5页Offshore Oil

基　　金：国家自然科学基金项目"高浓度黏弹性聚合物在微观孔隙中的驱油机理研究"(50874023)

摘　　要：应用室内实验与数值模拟两种方法,系统地研究了底水稠油油藏人工隔层形态展布及其影响因素。室内物理模拟实验利用人造岩心,定性、定量地分析了不同沉积特征、不同注入隔层介质速度、体积和黏度下隔层形态特征,并应用数值模拟方法,对比验证了室内研究结果。结果表明:不同沉积特征形成的隔层形态有明显区别,针对不同沉积特征地层应采取不同的堵水措施;注入速度越小越好,但考虑到凝胶固结的时间和施工作业可以适当提高注入速度;改变注入凝胶浓度,对隔层形态的影响较大,注入凝胶的浓度越高、黏度越大,纵向上隔层厚度也越大;注入体积越大形成的隔层半径和厚度越大,但整体形态相似。Study on artificial barrier distribution mechanism and EOR effect factors of the heavy oil reservoir with bottom water has been conducted with laboratory experiment and numerical simulation method. The artificial barrier morphological characteristics are studied qualitatively and quantitatively under different sedimentary characteristics, different injection medium speed, volume and vis- cosity in laboratory experiment. Then, the results of laboratory studies are compared with the results of numerical simulation method. The results showed that different sedimentary characteristics have obvious difference on the formation of the barrier morphology, dif- ferent water blocking measures should be taken in view of the different sedimentary characteristics. The smaller of the injection speed is the better of the study result. Considering the time of construction and operation, injection speed should be increased. Changing the gel concentration can influence greatly on the morphology of interlayer barrier. The higher of the gel concentration and the greater of injection viscosity, the greater of the interlayer barrier thickness is. The larger of injection volume, the greater of the injection barrier radius and thickness, but the overall morphology is similar.

关 键 词：底水稠油油藏 人工隔层 数值模拟 室内试验 

分 类 号：TE355[石油与天然气工程—油气田开发工程]