弱凝胶体系黏度参数计算方法研究  

Study on the calculation method of the viscosity parameter of weak gel system

作　　者：代磊阳 郑双益 张云宝 邹剑 黎慧 王楠 夏欢 

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《精细与专用化学品》2018年第2期33-36,共4页Fine and Specialty Chemicals

基　　金：中海石油有限公司科研项目"渤海高含水油田在线调驱技术研究与应用"(YXKY-2016-TJ-02)

摘　　要：弱凝胶体在渤海油田的调驱中得到广泛应用。为了充分发挥弱凝胶应用效果,应该确定其油藏中的物理和化学参数。通过运用CMG数值模拟技术可以指导弱凝胶调驱方案设计,为增强CMG运行方案的精确度,需要明确弱凝胶体系在油藏中的物化参数(黏浓、残余阻力系数、最大吸附量、残余吸附量等),其中黏度数值是影响CMG运行的关键因素。本文确定了影响黏度损失的主要因素为近井地带剪切和衰竭层效应。通过近井地带模拟装置确定了射孔带剪切会造成65%的黏度损失,通过双流体模型结合Huggins方程、Mark-Houwink经验式确定衰竭层效应会造成8%的黏度损失。计算结果输入到CMG软件中,进行软件历史拟合,拟合率从开始的80%提高到93%。Weak gel was widely used for profile control and displacement in Bohai Oilfield.Project for profile control and displacement of weak gel was guided by CMG technology.To enhance the effect of weak gel,the physicochemical parameter of the weak gel in the oil reservoir should be verified,including the viscosity,residual resistance factor,the maximum adsorbing capacity,residual adsorbing capacity,etc.Viscosity was determined as key parameter of effecting on the CMG history matching.To calculate the value of the viscosity,the shear action and depleted layer effect were considered.The two-fluid model,Huggins equation and Mark-Houwink empirical formula were used to calculate the depleted layer effect which could decrease the viscosity by 8%.Then CMG was used to match the outer model.The result showed that the match rate could increase from 80% to 93%.

关 键 词：衰竭层效应 双流体模型 残余阻力系数 Huggins方程 

分 类 号：TE39[石油与天然气工程—油气田开发工程]