检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:何源媛 钟会影[1] 郭松林[2] 杨庭宝 He Yuanyuan;Zhong Huiying;Guo Songlin;Yang Tingbao(School of Petroleum Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China;Research Institute of Exploration and Development,Daqing Oilfield Company,PetroChina,Daqing Heilongjiang 163712,China;Second Oil Production Plant,Daqing Oilfield Company,PetroChina,Daqing Heilongjiang 163458,China)
机构地区:[1]东北石油大学石油工程学院,黑龙江大庆163318 [2]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [3]中国石油大庆油田有限责任公司第二采油厂,黑龙江大庆163458
出 处:《石油化工高等学校学报》2023年第2期34-41,共8页Journal of Petrochemical Universities
基 金:中国博士后科学基金项目(2019M661250);黑龙江省博士后经费资助项目(LBH-Z19050)。
摘 要:二类B油层目前已经成为大庆油田的主要开采对象,其地质储量占二类油层的45.8%。针对二类B油层开采差异较大的现象,建立了黏弹性聚合物-原油两相数学模型,并采用对数构象法进行变换;利用VOF法追踪聚驱过程中的两相界面,得到了黏弹性聚合物-原油两相流的数值模型;通过二类油层微观模型研究孔隙结构和聚合物黏弹性对微观驱油效率的影响。结果表明,储层非均质性越强,微观驱油效率越低,孔隙参数较好的二类A油层的驱油效率高于二类B油层2.10%;随着黏度的增加,微观驱油效率增大,黏度比(聚合物与原油的黏度比)为1.5∶1、2.0∶1和10.0∶1的方案驱油效率比黏度比为1.0∶1的方案高0.59%、0.80%和4.10%;随着弹性的增加,微观驱油效率增大,但当松弛时间大于13 s后,微观驱油效率略有降低,说明聚合物的弹性对驱油效率的贡献存在最优值。研究结果为大庆油田二类B油层聚驱开发提供了重要的理论支撑。Class II-B reservoirs have become the main exploitation target in Daqing Oilfield,and their geological reserves account for 45.8%of the Class II reservoirs.In view of the huge difference in the exploitation of Class II-B reservoirs,a two-phase mathematical model of viscoelastic polymer solution and crude oil was built,and the logarithmic conformation method was used to transform the model.The VOF method was employed to track the two-phase interface in the displacement process,and thus a two-phase numerical model of viscoelastic polymer solution and crude oil was obtained.Moreover,the effects of pore structure and viscoelasticity of polymer on microscopic oil displacement efficiency were studied by the microscopic model of Class II reservoirs.The results demonstrate that higher reservoir heterogeneity is accompanied by lower microscopic oil displacement efficiency,and the oil displacement efficiency of Class II-A reservoirs with better pore parameters is 2.10%higher than that of Class II-B reservoirs.With the increase in viscosity,the microscopic oil displacement efficiency increases,and the oil displacement efficiency of schemes with a viscosity ratio of(viscosity ratio of polymer to crude oil)1.5∶1,2.0∶1 and 10.0∶1 is 0.59%,0.80%and 4.10%higher,respectively,than that with a viscosity ratio of 1.0∶1.With the increase in elasticity,the microscopic oil displacement efficiency rises,but when the elasticity is higher than 13 s,the microscopic oil displacement efficiency decreases slightly,which indicates that the elasticity of polymer solution has an optimal value for improving oil displacement efficiency.The research results provide important theoretical support for the polymer flooding development of Class II-B reservoirs in Daqing oilfield.
分 类 号:TE343[石油与天然气工程—油气田开发工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:3.129.17.245