摘要
碳酸盐岩缝洞型油藏储层中,溶洞是主要的储集空间,裂缝是流体流动的主要通道,二者内部流动阻力差异很大。针对缝洞型储层呈离散介质的特征,提出缝洞网络模型,并在此基础上建立油水两相流数学模型。采用随机建模和历史拟合相结合的方法对TK472CH单井缝洞单元的生产特征进行模拟。结果表明:产油量的拟合误差为5.58t.d-1,含水率的拟合误差为12.31%,均在误差许可范围内,验证了模型的合理性;与耦合型数学模型相比,该模型简化了缝洞型油藏的表征参数,计算成本低,可进行大规模的工程应用。
In fracture-cavity carbonate reservoir,cavity is the most important storage space and fracture is the main flow path,and the flow resistance of fracture is different from that of cavity.A fracture-cavity network model was proposed according to discrete media characteristics of fracture-cavity reservoir.And an oil-water two-phase flow model was established.The methods of stochastic modeling and history matching were combined to simulate the production performance of TK472CH single well fracture-cavity unit.The results show that the fitting errors of oil production rate and water cut are 5.58 t·d^-1 and 12.31% respectively,which are in the acceptable fitting error range.Compared with the coupled model,the reservoir description parameters are simplified and computation cost decreases,so this model could be applied to large-scale engineering project.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第3期72-75,79,共5页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家'973'重点基础研究计划项目(2006CB202400)
关键词
缝洞型油藏
网络模型
离散介质
流体流动
fracture-cavity reservoir
network model
discrete media
fluid flow
