摘要
为了做好纳米驱油技术的油藏方案设计及准确预测技术效果,在连通性模型的基础上耦合纳米流体的驱油机理,考虑纳米颗粒吸附沉降引起的岩石孔隙度和渗透率变化及增黏效应,建立纳米流体化学组分模拟表征方法,并对该方法与数值模拟软件及实验结果进行了对比,验证了该方法的正确性和可靠性。对主要参数进行了敏感性分析,发现随着纳米注入浓度增加、注入时间提前及注入PV数增加,驱油效果越好。以X油田为例,拟合A1井组纳米驱油前后累产油及含水率,拟合率达到90%以上,拟合精度较高,表明该方法可以实现生产指标的拟合,可以指导纳米驱及水驱方案的效果预测。
In order to better design the reservoir scheme and predict the effect of nano-fluid flooding technology accurately,on the basis of the connectivity model,coupling the oil displacement mechanism of nanofluids,considering the changes in rock porosity and permeability caused by nanoparticle adsorption settlement,as well as the viscosity increasing effect,a simulation characterization method for nanofluid chemical composition was established.The correctness and reliability of this method were verified by comparing it with numerical simulation software and experimental results.Sensitivity analysis was conducted on the main parameters,and it was found that as the nanoinjection concentration increased,the injection time advanced,and the number of injected PV increased,the oil displacement effect improved.Taking X oilfield as an example,the cumulative oil production and water content of A1 well group before and after nano-flooding were fitted,with a fitting rate of over 90%and high fitting accuracy,indicating that this method can achieve the fitting of production indicators and guide the prediction of the effectiveness of nano-flooding and water flooding schemes.
作者
高杰
王涛
王飞
田苗
张宇
于萌
Gao Jie;Wang Tao;Wang Fei;Tian Miao;Zhang Yu;Yu Meng(Oilfield Production Research Institute,China Oilfield Services Limited,Tianjin 300450,China;Laboratory of Testing and Analysis of State Key Laboratory of Ocean Efficient Development,Tianjin 300450,China)
出处
《能源与环保》
2025年第2期106-111,共6页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
中海油“油藏问题诊断及增产措施方案优化研究与应用”(E-23227003)
中海油“地下二次交联的纳米复合凝胶调驱剂开发与应用”(E-23227024)。
关键词
纳米流体
表征方法
吸附量
增黏效应
连通性模型
nano-fluid
characterization method
adsorption capacity
viscosity increasing effect
connectivity model
