通用性星树状油气管网布局优化模型研究

集输管网结构复杂、投资大，是油气田建设的重要组成部分，优化集输管网布局方案是油气田降低开发成本的关键之一。由于星树状管网在集输系统中被广泛使用，针对星树状管网最优布局问题，开展了星树状管网布局优化模型的研究，重点关注了集输站处理容量和集输半径的约束限制，建立了Q模型、R模型、QR模型等含有大量离散变量的混合整数线性规划的通用模型。以实际的油气田为例，运用分支定界法求解上述模型，得到各方案下的拓扑结构、集输站设施位置、中央处理设施位置等系统最优解，证明了模型与算法的正确性和可靠性。通过分级优化策略和整体优化结果的对比分析，整体求解星树状管网模型的总投资更低。提出的通用性星树状油气管网布局优化模型，可根据工程实际情况确定不同约束条件下的最优管网布局，有效指导油气田地面工程设计与建设。

Study on Generalized Optimization Model of Star-tree Oil&Gas Pipeline Network Layout

Oil&gas pipeline network has a complicated structure and large investment,which is an important part of oil&gas field construction.Therefore,optimizing the gathering and transportation pipeline network is very important for the oil&gas field to reduce the development cost.The star-tree type pipe network is widely used in the gathering and transportation system.Star-tree pipe network is widely used in gathering and transporting system.In view of the optimal layout of the star-tree pipe network,this paper carries out a study on the mathematical optimization models of the star-tree pipe network layout,and mainly focuses on the star-tree that has restrictions on the processing capacity and gathering radius of the gathering station in the pipeline network.Q model,R model and QR model of mixed integer linear programming with a large number of discrete variables have been established.Taking a real gas field and an oilfield as examples,we adopted the branch and bound method to solve the above model as a whole,and obtained the optimal topology structure,the location of the station facilities,and the location of the central processing facility under each scheme.At the same time,the pipeline network investment also can be able to obtain,thus proving the correctness and reliability of the models,which can guide the engineering construction of oil-gas fields.We further solved the QR model with a hierarchical optimization strategy,and compared the investment of hierarchical optimized pipe network and overall optimized pipe network.It is proved that the overall investment to solving the star-tree pipe network model is lower,which can guide the oil and gas field engineering construction.