THE OPTIMAL CONTROL SYSTEM OF 3D HORIZONTAL WELL AND ITS APPLICATION

【摘要】 <正> A multi-objective optimal control model for nonlinear multilevel dynamicalsystem is built in this paper. The existence of the solutions to this systemand the controllability and the polykeys of the control are discussed. In orderto obtain the global optimal solution, Uniform Design method is introducedto select initial1 feasible points, then an improved Hooke-jeeves algorithm isproposed. The new algorithm and its corresponding software we developed hasvalidated in more than 12 horizontal wells, which show their advantages suchas less length of trajectory designed, more accuracy of target hitting and lesstime-consuming comparison with present conventional method.更多还原

【Abstract】 A multi-objective optimal control model for nonlinear multilevel dynamical system is built in this paper. The existence of the solutions to this system and the controllability and the polykeys of the control are discussed. In order to obtain the global optimal solution, Uniform Design method is introduced to select initial feasible points, then an improved Hooke-Jeeves algorithm is proposed. The new algorithm and its corresponding software we developed has validated in more than 12 horizontal wells, which show their advantages such as less length of trajectory designed, more accuracy of target hitting and less time-consuming comparison with present conventional method.更多还原