论文部分内容阅读
提高注水系统效率、降低能耗和精确实施合理的注水方案、控制含水率上升速度是中高含水率油田开发中的两个重要技术问题。注水系统的流量和压力分布的计算是解决上述两个问题的技术基础。本文首次提出了用大系统分解迭代方法，解决油田大型注水系统的上述计算问题，并提出“压力谷”新概念将注水系统分解成子系统，克服了水力系统耦合强的困难，保证了上述算法的收敛性。文中给出了注水系统的通用模型和通用计算方法，应用于分解后的各子系统，简化了建模、计算和编程工作。该算法已从理论上证明是严格收敛的，并被编成计算机程序，应用于油田大型注水系统。
Increasing the efficiency of water injection system, reducing energy consumption and accurately implementing a reasonable water injection program to control the rate of water cut rise are two important technical issues in the development of medium and high water cut oil fields. The calculation of flow and pressure distribution in a water injection system is the technical basis for solving the above two problems. This paper presents for the first time a large-scale system decomposition iteration method to solve the above-mentioned large-scale waterflooding system calculation problems, and proposed a new concept of “pressure valley” will be broken down into sub-systems water injection system to overcome the hydraulic coupling difficulties, to ensure the above algorithm Convergence. In this paper, a general model of water injection system and a general calculation method are given, which are applied to the subsystems after decomposition, which simplifies modeling, calculation and programming. The algorithm has been theoretically proved to be strictly convergent, and has been compiled into a computer program, used in large oilfield water injection system.