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本文首先给出钻井布局的数学模型 ,进一步采用全面搜索法、局部搜索法、图论法、目测法、图上作业法等不同的优化方法 ,进行了模型求解 .对于给定的数值例子 ,得到问题 (1 )的解为 4 ,可利用的旧井为P2 ,P4 ,P5和 P10 ;问题 (2 )的解为 6,可利用的旧井为 P1,P6,P7,P8,P9和 P11.最后对于问题 (3) ,本文给出了 n个旧井均可利用的充分必要条件
In this paper, the mathematic model of drilling layout is given first, and then the model is solved by using different optimization methods such as comprehensive search method, local search method, graph theory method, visual inspection method and on-the-job method etc. For a given numerical example, The solution to Problem (1) is 4. The available old wells are P2, P4, P5 and P10. The solution to Problem (2) is 6. The available old wells are P1, P6, P7, P8, P9 and P11. Finally, for the problem (3), the paper gives the necessary and sufficient conditions that n old wells can be used