定向井待钻井眼轨迹最优化设计方法研究

Study on Optimized Design Methods of Directional Well Trajectory to Be Drilled

明确指出了现有定向井待钻井眼轨迹设计方法的不足之处， 即设计出来的井眼轨迹不能确信为一条最优的轨迹或可行的最优待钻轨迹。首次将定向井待钻井眼轨迹最优化设计问题归结为非线性不等式约束下线性目标函数的非线性规划问题， 并应用序列无约束极小化方法——ＳＵＭＴ混合法进行优化计算。

This paper points out the shortcomings of current method in planning well trajectory to be drilled, that is, the planning trajectory is not an optimized one. In the mean time, optimized design of directional well trajectory to be drilled is firstly submitted to the problem of nonlinear programming of objective function under the limitation of nonlinear inequality. The method of SUMT is used to do optimized calculation.