关键词: 注水, 水力计算, 压力分布, 节能, 计算机程序

Abstract: This paper presents a decomposition-iterative calculation method for hydrodynamic calculation of large scale water injection systems.It is the key technology for raising efficiency of water injection system and accurate implement of waterflood project.The two problems are important for production and development of high water-cut oilfields.Decomposing a water injection system into subsystems according to "pressure valleys" which is a new concept given by authors can ensure convergence of the iterative calculation method above.This paper also presents an universal modelling and calculation method for water injection networks,it simplize the modelling calculatiing and programming.This method is programmed in a software package,and the package is applied in the large scale water injection system in Daqing Oil field.

Key words: water injection, hydraulic calculation, pressure distribution, energy conservation, computer program