In order to improve optimal-seeking speed and accuracy,this paper presents a new concept of right-moving distance,the minimum difference between resource demand variance before and after moving an activity right.

The Generalization of multipole Newton interpolation formula can be obtained by changing the concept of difference coefficient to multipole difference coefficient which helps the unity and popularization of Newtons forward interpolation formula, Newtons backward interpolation and Taylors formula.

Based on the opening condition of oil well pump traveling valve,considering the reality of late oil extraction,the computational formulas of plunger lagged displacement are deduced,and computation program is compiled to apply to measuring wells on-the-spot.