有段长约束的套管柱强度优化设计

Optimizing Design of Casing String with Length Constrained by Means of Graph-search Strategy

为了实现套管柱强度的优化设计，在定义了套管有效工作井段的概念，分析了不同种类套管进行连接的条件之后，将这一设计归结为有段长约束的套管柱强度优化设计问题，并指出其求解的困难所在。在此基础上，结合人工智能树图的广度优先方法，建立了套管柱强度优化设计的树图搜索逻辑运行框图，编制了相应的软件，从而实现了有段长约束的套管柱强度计算机辅助最优化设计。

or optimizing design of casing string, casing.effeictive working intervalis defined. Joint conditions of various casing pipes are analysed so that this design can be reduced to optimization design of casing with length constrained. Difficulties in solving this problem are shown. Based on the above, logical schemes for graph-search algorithm are put for this optimization design. Furthermore, a corresponding program is established torealize the computer-aided design of casing string with length constrained.