模拟退火算法在压注采系统优化中的应用

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压注采系统是一个包括低渗透油田开发中压裂、注水和采油三个主要环节的非线性复杂系统 ,用常规方法难以对该系统进行优化设计 ,为此提出了用模拟退火算法优化压注采系统的方法 .模拟退火算法是一种全局优化方法 ,对初始点的依赖性不强 .特别是对于本身就涉及到大型数值计算的压注采系统 ,模拟退火算法更显示出其直接寻优的优势 .研究结果表明 ,用模拟退火算法能有效地解决压注采系统的非线性全局优化问题 ,可以得出不同条件下压、注、采的最佳匹配关系 ,实现了压裂、注水和采油技术与经济的统一 ,从而为提高低渗透油田开发的整体效益提供了可靠的理论依据 The pressure injection and injection system is a nonlinear complex system including the three main aspects of fracturing, water injection and oil recovery in the development of low permeability oilfields. It is difficult to optimize the system by conventional methods. Therefore, a simulated annealing algorithm is proposed to optimize the pressure injection Mining systems approach.Simulation annealing algorithm is a global optimization method, the dependence of the initial point is not strong.Especially for itself involves the large-scale numerical calculation of pressure injection mining system, the simulated annealing algorithm also shows its direct optimization .The results show that the simulated annealing algorithm can effectively solve the nonlinear global optimization problem of pressure injection and production system, and the best match of pressure, injection and mining under different conditions can be obtained, and the fracturing, water injection and Oil production technology and economic unity, so as to improve the overall effectiveness of low permeability oilfield development provides a reliable theoretical basis
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